CN115062579A - High-matching resistance routing method and circuit layout - Google Patents
High-matching resistance routing method and circuit layout Download PDFInfo
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- CN115062579A CN115062579A CN202210935352.0A CN202210935352A CN115062579A CN 115062579 A CN115062579 A CN 115062579A CN 202210935352 A CN202210935352 A CN 202210935352A CN 115062579 A CN115062579 A CN 115062579A
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Abstract
The invention discloses a high-matching resistance routing method and a circuit layout, wherein the method comprises the following steps: determining a minimum resistance component unit with high matching resistance; the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line; the first resistor RA and the second resistor RA are connected in series through a first metal wire to form a first track wire; the first resistor RB and the second resistor RB are connected in series through a second metal wire to form a second track wire; the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length; the first track routing and all the resistors RB are not intersected in space; the second track routing is not intersected with all the resistors RA in space; and sequentially connecting the N minimum resistance component units end to complete high-matching resistance routing. And in the process of high matching resistance, accurate proportional amplification or proportional voltage division can be realized.
Description
Technical Field
The invention relates to the technical field of resistor routing, in particular to a high-matching resistor routing method and a circuit layout.
Background
For places needing high matching resistance, such as band-gap reference source, programmable gain amplifier, proportional resistor voltage division and the like, the existing resistance matching has the problems that the lengths and the types of metal wires are not consistent, and the metal wires pass through the resistor body. This will cause the environment between adjacent resistors to be inconsistent, resulting in slight differences in the resistors, and thus causing differences in the ratio of the resistors, resulting in reduced circuit performance.
Therefore, on the basis of the existing resistor matching technology, how to provide a resistor routing method and a circuit layout to achieve accurate proportional amplification or proportional voltage division in the process of high matching resistance becomes a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above problems, the present invention provides a high matching resistance routing method and circuit layout, which can achieve precise proportional amplification or proportional voltage division in the process of high matching resistance.
The embodiment of the invention provides a high-matching resistance routing method, which comprises the following steps:
step (1): determining a minimum resistance component unit with high matching resistance; the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line;
one end of the first resistor RA is provided with an access extension line, the other end of the first resistor RA is connected with one end of the second resistor RA in series through the first metal wire, and the other end of the second resistor RA is provided with a lead-out extension line to jointly form a first track wire;
one end of the first resistor RB is provided with an access extension line, the other end of the first resistor RB is connected with one end of the second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length;
the first track routing and all the resistors RB are not intersected in space; the second track routing and all resistors RA are not crossed in space;
step (2): and sequentially connecting the N minimum resistance component units end to complete high-matching resistance routing.
Further, the type, size and parameters of the resistor RA and the resistor RB are the same.
Furthermore, the first metal wire, the second metal wire, the access extension line and the lead-out extension line all adopt the same layer of metal.
Further, the step (2) includes:
connecting a leading-out extension line of a second resistor RA of the (N-1) th minimum resistance component unit with an access extension line of a first resistor RA of the Nth minimum resistance component unit;
and connecting the derived extension line of the second resistor RB of the (N-1) th minimum resistor assembly unit with the access extension line of the first resistor RB of the Nth minimum resistor assembly unit to finish high-matching resistor routing.
The embodiment of the invention also provides a high-matching resistance routing method, which comprises the following steps:
step (1): determining a first resistance component, a second resistance component and a third resistance component with high matching resistance;
(1.1) the first resistive component includes: the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of a first resistor RA is connected with one end of a third resistor RA in series through a first metal wire, and the other end of the third resistor RA is provided with a first lead-out extension line; the other end of the first resistor RA is connected in series with one end of a second resistor RA through the first metal wire, and the other end of the second resistor RA is provided with a second leading-out extension line to jointly form a first track wire;
one end of the first resistor RB is connected with one end of a third resistor RB in series through a second metal wire, and the other end of the third resistor RB is provided with a third leading-out extension line; the other end of the first resistor RB is connected with one end of a second resistor RB in series through the second metal wire, and the other end of the second resistor RB is provided with a fourth derived extended line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape and are parallel to each other;
the first track routing and all the resistors RB are not intersected in space; the second track routing and all resistors RA are not crossed in space;
(1.2) the second resistance component is formed by connecting N minimum resistance component units end to end; the minimum resistance component unit includes: the resistor RB, the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a first access extension line, the other end of the first resistor RB is connected with one end of the fourth resistor RB in series through the second metal wire, and the other end of the fourth resistor RB is provided with a fifth lead-out extension line to jointly form a third track wire;
one end of the first resistor RA is provided with a second access extension line, the other end of the first resistor RA is connected with one end of a fourth resistor RA in series through the first metal routing, and the other end of the fourth resistor RA is provided with a sixth lead-out extension line to jointly form a fourth track routing;
one end of the second resistor RA is provided with a third access extension line, the other end of the second resistor RA is connected with one end of the third resistor RA in series through the first metal wire, and the other end of the third resistor RA is provided with a seventh lead-out extension line to jointly form a fifth track wire;
one end of the second resistor RB is provided with a fourth access extension line, the other end of the second resistor RB is connected with one end of the third resistor RB in series through the second metal wire, and the other end of the third resistor RB is provided with an eighth lead-out extension line to jointly form a sixth track wire;
the third track wire, the fourth track wire, the fifth track wire and the sixth track wire are arranged in a snake shape and are parallel to each other;
the third trace routing is not intersected with the second resistor RB, the third resistor RB and all the resistors RA in space; the fourth trace routing is not crossed with the second resistor RA, the third resistor RA and all the resistors RB in space; the fifth trace routing is not spatially intersected with the first resistor RA, the fourth resistor RA and all the resistors RB; the sixth trace routing is not spatially intersected with the first resistor RB, the fourth resistor RB and all the resistors RA;
(1.3) the third resistive component includes: the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a fifth access extension line, and the other end of the first resistor RB is provided with a first wire outlet end, so that a seventh trace routing is formed;
one end of the first resistor RA is provided with a sixth access extension line, and the other end of the first resistor RA is provided with a second wire outlet end, so that an eighth trace routing is formed;
one end of the second resistor RA is provided with a seventh access extension line, and the other end of the second resistor RA is provided with a first line incoming end, so that a ninth trace is formed;
one end of the second resistor RB is provided with an eighth access extension line, and the other end of the second resistor RB is provided with a second line incoming end which jointly form a tenth track routing;
the seventh trace line, the eighth trace line, the ninth trace line and the tenth trace line are arranged in a snake shape and are parallel to each other;
the seventh trace routing is not spatially intersected with the second resistor RB and all the resistors RA; the eighth trace routing is not spatially intersected with the second resistor RA and all the resistors RB; the ninth trace routing is not crossed with the first resistor RA and all the resistors RB in space; the tenth trace is not spatially intersected with the first resistor RB and all resistors RA;
the total length of the first track wire, the fourth track wire, the fifth track wire, the eighth track wire and the ninth track wire is equal to the total length of the second track wire, the third track wire, the sixth track wire, the seventh track wire and the tenth track wire;
step (2): and the first resistor assembly, the second resistor assembly and the third resistor assembly are sequentially connected end to end respectively to complete high-matching resistor routing.
Further, the resistor RA and the resistor RB are the same in type, size and parameters.
Further, the first metal wire, the second metal wire, the first access extension line, the second access extension line, the third access extension line, the fourth access extension line, the fifth access extension line, the sixth access extension line, the seventh access extension line, the eighth access extension line, the first derivation extension line, the second derivation extension line, the third derivation extension line, the fourth derivation extension line, the fifth derivation extension line, the sixth derivation extension line, the seventh derivation extension line, the eighth derivation extension line, the first incoming line end, the second incoming line end, the first outgoing line end and the second outgoing line end all adopt the same layer metal.
Further, the step (2) includes:
connecting the third leading-out extension line with a first access extension line of the 1 st minimum resistance component unit; connecting the first derived extension line with a second access extension line of the 1 st minimum resistance component unit; connecting the second derived extension line with a third access extension line of the 1 st minimum resistance component unit; connecting the fourth derived extension line to a fourth access extension line of the 1 st minimum resistance component unit;
connecting a fifth derived extension line of the (N-1) th minimum resistance component unit with a first access extension line of the Nth minimum resistance component unit; connecting a sixth leading-out extension line of the (N-1) th minimum resistance component unit with a second access extension line of the (N) th minimum resistance component unit; connecting a seventh derived extension line of the (N-1) th minimum resistance component unit with a third access extension line of the Nth minimum resistance component unit; connecting the eighth derived extension line of the (N-1) th minimum resistance component unit with the fourth access extension line of the (N) th minimum resistance component unit;
connecting a fifth derived extension line of the Nth minimum resistance component unit with the fifth access extension line; connecting a sixth leading-out extension line of the Nth minimum resistance component unit with the sixth access extension line; connecting a seventh lead-out extension line of the nth least resistive component unit to the seventh access extension line; and connecting the eighth leading-out extension line of the Nth minimum resistance assembly unit with the eighth access extension line to finish high-matching resistance routing.
The embodiment of the present invention further provides a circuit layout of high matching resistance routing, including: n minimum resistance component units which are sequentially connected end to end;
the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line;
one end of the first resistor RA is provided with an access extension line, the other end of the first resistor RA is connected with one end of the second resistor RA in series through the first metal wire, and the other end of the second resistor RA is provided with a lead-out extension line to jointly form a first track wire;
one end of the first resistor RB is provided with an access extension line, the other end of the first resistor RB is connected with one end of the second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length;
the first track routing and all the resistors RB are not intersected in space; the second trace routing and all resistors RA are not crossed in space.
An embodiment of the present invention further provides a circuit layout of a high matching resistance trace, including: the first resistor component, the second resistor component and the third resistor component are sequentially connected end to end;
(1.1) the first resistive component includes: the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of a first resistor RA is connected with one end of a third resistor RA in series through a first metal wire, and the other end of the third resistor RA is provided with a first lead-out extension line; the other end of the first resistor RA is connected in series with one end of a second resistor RA through the first metal wire, and the other end of the second resistor RA is provided with a second leading-out extension line to jointly form a first track wire;
one end of the first resistor RB is connected with one end of a third resistor RB in series through a second metal wire, and the other end of the third resistor RB is provided with a third leading-out extension line; the other end of the first resistor RB is connected with one end of a second resistor RB in series through the second metal wire, and the other end of the second resistor RB is provided with a fourth derived extended line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape and are parallel to each other;
the first track routing and all the resistors RB are not intersected in space; the second track routing and all resistors RA are not crossed in space;
(1.2) the second resistance component is formed by connecting N minimum resistance component units end to end; the minimum resistance component unit includes: the resistor RB, the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a first access extension line, the other end of the first resistor RB is connected with one end of the fourth resistor RB in series through the second metal wire, and the other end of the fourth resistor RB is provided with a fifth lead-out extension line to jointly form a third track wire;
one end of the first resistor RA is provided with a second access extension line, the other end of the first resistor RA is connected with one end of a fourth resistor RA in series through the first metal routing, and the other end of the fourth resistor RA is provided with a sixth lead-out extension line to jointly form a fourth track routing;
one end of the second resistor RA is provided with a third access extension line, the other end of the second resistor RA is connected with one end of a third resistor RA in series through the first metal wire, and the other end of the third resistor RA is provided with a seventh lead-out extension line to jointly form a fifth track wire;
one end of the second resistor RB is provided with a fourth access extension line, the other end of the second resistor RB is connected with one end of the third resistor RB in series through the second metal wire, and the other end of the third resistor RB is provided with an eighth lead-out extension line to jointly form a sixth track wire;
the third track wire, the fourth track wire, the fifth track wire and the sixth track wire are arranged in a snake shape and are parallel to each other;
the third trace routing is not intersected with the second resistor RB, the third resistor RB and all the resistors RA in space; the fourth trace routing is not crossed with the second resistor RA, the third resistor RA and all the resistors RB in space; the fifth trace routing is not spatially intersected with the first resistor RA, the fourth resistor RA and all the resistors RB; the sixth trace routing is not spatially intersected with the first resistor RB, the fourth resistor RB and all the resistors RA;
(1.3) the third resistive component includes: the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a fifth access extension line, and the other end of the first resistor RB is provided with a first wire outlet end, so that a seventh trace routing is formed;
one end of the first resistor RA is provided with a sixth access extension line, and the other end of the first resistor RA is provided with a second wire outlet end, so that an eighth trace routing is formed together;
one end of the second resistor RA is provided with a seventh access extension line, and the other end of the second resistor RA is provided with a first line incoming end, so that a ninth trace is formed;
one end of the second resistor RB is provided with an eighth access extension line, and the other end of the second resistor RB is provided with a second line inlet end, so that a tenth trace line is formed together;
the seventh trace routing, the eighth trace routing, the ninth trace routing and the tenth trace routing are arranged in a snake shape and are parallel to each other;
the seventh trace is not crossed with the second resistor RB and all the resistors RA in space; the eighth trace routing is not spatially intersected with the second resistor RA and all the resistors RB; the ninth trace routing is not crossed with the first resistor RA and all the resistors RB in space; the tenth trace is not spatially intersected with the first resistor RB and all resistors RA;
the total length of the first track wire, the fourth track wire, the fifth track wire, the eighth track wire and the ninth track wire is equal to the total length of the second track wire, the third track wire, the sixth track wire, the seventh track wire and the tenth track wire.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the high-matching resistance routing method provided by the embodiment of the invention comprises the following steps: determining a minimum resistance component unit with high matching resistance; the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line; the first resistor RA and the second resistor RA are connected in series through a first metal routing to form a first track routing; the first resistor RB and the second resistor RB are connected in series through a second metal wire to form a second track wire; the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length; the first track routing and all the resistors RB are not intersected in space; the second track routing is not intersected with all the resistors RA in space; and sequentially connecting the N minimum resistance component units end to complete high-matching resistance routing. Accurate proportional amplification or proportional voltage division in the process of high matching resistance can be realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a minimum unit layout of a high matching resistance routing method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an overall layout connection provided by the embodiment of the present invention;
fig. 3 is another schematic diagram of a minimum unit layout of the high matching resistance routing method according to the embodiment of the present invention;
fig. 4 is another overall layout connection diagram provided in the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
The embodiment of the invention provides a high-matching resistance routing method, which comprises the following steps:
step (1): determining a minimum resistance component unit with high matching resistance; the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line;
one end of the first resistor RA is provided with an access extension line, the other end of the first resistor RA is connected with one end of the second resistor RA in series through the first metal wire, and the other end of the second resistor RA is provided with a lead-out extension line to jointly form a first track wire;
one end of the first resistor RB is provided with an access extension line, the other end of the first resistor RB is connected with one end of the second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length;
the first track routing and all the resistors RB are not intersected in space; the second track routing is not intersected with all the resistors RA in space;
step (2): and sequentially connecting the N minimum resistance component units end to complete high-matching resistance routing.
According to the wiring method for the high-matching resistor, accurate gain voltage amplification of the programmable gain amplifier and accurate proportional voltage division of occasions such as a band gap reference source and proportional resistor voltage division can be achieved after the high-matching resistor is used. The circuit stress after the high matching resistance routing is uniform, the matching resistance proportion has no difference, and the circuit performance can be effectively improved.
Specifically, referring to fig. 1, for a layout diagram of a minimum unit (chip) of the high matching resistance routing method provided in this embodiment, a resistor RA, a resistor RB, and a resistor RA are sequentially arranged along a horizontal line. The type (type), size (length, thickness) and parameters (resistance value) of the resistor RA and the resistor RB are the same. The metal routing adopts the same layer of metal (i.e. the same type of metal and the same wiring mode of the metal routing), for example: the metal is copper, aluminum, gold and the like; the metal wiring adopts wiring of a normal chip, wiring of a flip chip and the like.
Referring to fig. 2, the minimum unit is taken as a basis, and the minimum unit is connected end to end, so that the overall layout connection diagram provided by the embodiment is obtained. The resistor RA is connected in series through one metal wire (the first metal wire is adopted by both an access extension wire and a lead-out extension wire connected with the resistor RA); the resistor RB is connected in series through another metal wire (the second metal wire is adopted by both the access extension line and the lead-out extension line connected with the resistor RB), and the wires are led out at two ends (the left end and the right end) after matching. The first metal wire and the second metal wire have the same length and shape and the same track, and the wires and the resistors are not crossed in space.
Furthermore, after dummy is added to the two ends of the resistor RA and the resistor RB, the resistance values of the resistor RA, the resistor RB and the metal wire are not changed, and the total resistance value of the resistor RA and the metal wire thereof is still the same as the total resistance value of the resistor RB and the metal wire thereof.
Example 2
The embodiment of the invention provides a high-matching resistance routing method, which comprises the following steps:
step (1): determining a first resistance component, a second resistance component and a third resistance component with high matching resistance;
(1.1) the first resistive component includes: the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RA is connected with one end of the third resistor RA in series through the first metal routing, and the other end of the third resistor RA is provided with a first lead-out extension line; the other end of the first resistor RA is connected with one end of a second resistor RA in series through a first metal wire, and the other end of the second resistor RA is provided with a second leading-out extension line to jointly form a first track wire;
one end of the first resistor RB is connected with one end of the third resistor RB in series through the second metal routing, and the other end of the third resistor RB is provided with a third leading-out extension line; the other end of the first resistor RB is connected with one end of a second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a fourth lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape and are parallel to each other;
the first track routing and all the resistors RB are not intersected in space; the second track routing and all resistors RA are not crossed in space;
(1.2) the second resistance component is formed by connecting N minimum resistance component units end to end; the minimum resistance component unit includes: the resistor RB, the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a first access extension line, the other end of the first resistor RB is connected with one end of the fourth resistor RB in series through a second metal wire, and the other end of the fourth resistor RB is provided with a fifth export extension line to jointly form a third track wire;
one end of the first resistor RA is provided with a second access extension line, the other end of the first resistor RA is connected with one end of the fourth resistor RA in series through the first metal routing, and the other end of the fourth resistor RA is provided with a sixth lead-out extension line to jointly form a fourth track routing;
one end of the second resistor RA is provided with a third access extension line, the other end of the second resistor RA is connected with one end of the third resistor RA in series through the first metal wire, and the other end of the third resistor RA is provided with a seventh lead-out extension line to jointly form a fifth track wire;
one end of the second resistor RB is provided with a fourth access extension line, the other end of the second resistor RB is connected with one end of the third resistor RB in series through a second metal wire, and the other end of the third resistor RB is provided with an eighth lead-out extension line to form a sixth track wire together;
the third track wire, the fourth track wire, the fifth track wire and the sixth track wire are arranged in a snake shape and are parallel to each other;
the third trace routing is not crossed with the second resistor RB, the third resistor RB and all the resistors RA in space; the fourth trace routing is not crossed with the second resistor RA, the third resistor RA and all the resistors RB in space; the fifth track routing is not crossed with the first resistor RA, the fourth resistor RA and all the resistors RB in space; the sixth track routing is not crossed with the first resistor RB, the fourth resistor RB and all the resistors RA in space;
(1.3) the third resistance component includes: the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a fifth access extension line, and the other end of the first resistor RB is provided with a first wire outlet end, so that a seventh trace routing is formed;
one end of the first resistor RA is provided with a sixth access extension line, and the other end of the first resistor RA is provided with a second wire outlet end, so that an eighth trace routing is formed;
one end of the second resistor RA is provided with a seventh access extension line, and the other end of the second resistor RA is provided with a first line incoming end, so that a ninth trace is formed;
one end of the second resistor RB is provided with an eighth access extension line, and the other end of the second resistor RB is provided with a second line incoming end which jointly form a tenth track routing;
the seventh trace line, the eighth trace line, the ninth trace line and the tenth trace line are arranged in a snake shape and are parallel to each other;
the seventh trace routing is not crossed with the second resistor RB and all the resistors RA in space; the eighth track routing is not crossed with the second resistor RA and all the resistors RB in space; the ninth track routing is not crossed with the first resistor RA and all the resistors RB in space; the tenth trace is not crossed with the first resistor RB and all the resistors RA in space;
the total length of the first track routing, the fourth track routing, the fifth track routing, the eighth track routing and the ninth track routing is equal to the total length of the second track routing, the third track routing, the sixth track routing, the seventh track routing and the tenth track routing;
step (2): and the first resistor assembly, the second resistor assembly and the third resistor assembly are sequentially connected end to end respectively to complete high-matching resistor routing.
Specifically, referring to fig. 3, a layout diagram of a minimum unit (chip) of the high matching resistance routing method provided in this embodiment is shown. The type (type), size (length, thickness) and parameters (resistance value) of the resistor RA and the resistor RB are the same. The metal routing adopts the same layer of metal (i.e. the same type of metal and the same wiring mode of the metal routing), for example: the metal is copper, aluminum, gold and the like; the metal wiring adopts wiring of a normal chip or wiring of a flip chip and the like.
Referring to fig. 4, the minimum unit is taken as a base and connected end to serve as a second resistance component; and the first resistor component and the third resistor component are connected end to end respectively, so that the overall layout connection diagram provided by the embodiment is obtained. The resistor RA is connected in series through one metal wire (the first metal wire is adopted by both an access extension wire and a lead-out extension wire connected with the resistor RA); the resistor RB is connected in series through another metal wire (the second metal wire is adopted by both the access extension line and the lead-out extension line which are connected with the resistor RB), and the wires are led out at one end (both at the right end) after matching. Except the edge parts of the first metal wire and the second metal wire, the lengths and the shapes of the other metal wires are completely the same, the tracks are the same, and the wires and the resistors are not mutually intersected in space.
This embodiment, through walk the metal of series resistance RA and walk the metal of series resistance RB, the length and the shape of two walking the line set to the exact same, and then lead to two total lengths of walking the line the same, and then make the resistive loss of its metal walking the line the exact same. On the premise that the parameters, the types and the sizes of the series resistors in the circuit are completely the same, the loss of the series circuit is also the same, and the metal wires do not pass right above the resistor body, so that accurate gain amplification or proportional voltage can be realized.
Example 3
The embodiment of the invention provides a circuit layout of high-matching resistance routing, which comprises the following steps: n minimum resistance component units which are sequentially connected end to end;
the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line;
one end of the first resistor RA is provided with an access extension line, the other end of the first resistor RA is connected with one end of the second resistor RA in series through a first metal wire, and the other end of the second resistor RA is provided with a lead-out extension line to jointly form a first track wire;
one end of the first resistor RB is provided with an access extension line, the other end of the first resistor RB is connected with one end of the second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length;
the first track routing and all the resistors RB are not intersected in space; the second trace and all resistors RA are not spatially intersected.
Example 4
The embodiment of the invention provides a circuit layout of high-matching resistance routing, which comprises the following steps: the first resistor component, the second resistor component and the third resistor component are sequentially connected end to end;
(1.1) the first resistive component includes: the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RA is connected with one end of the third resistor RA in series through the first metal routing, and the other end of the third resistor RA is provided with a first lead-out extension line; the other end of the first resistor RA is connected with one end of the second resistor RA in series through a first metal wire, and the other end of the second resistor RA is provided with a second leading-out extension line to jointly form a first track wire;
one end of the first resistor RB is connected with one end of the third resistor RB in series through the second metal routing, and the other end of the third resistor RB is provided with a third leading-out extension line; the other end of the first resistor RB is connected with one end of a second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a fourth lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape and are parallel to each other;
the first track routing and all the resistors RB are not intersected in space; the second track routing is not intersected with all the resistors RA in space;
(1.2) the second resistance component is formed by connecting N minimum resistance component units end to end; the minimum resistance component unit includes: the resistor RB, the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a first access extension line, the other end of the first resistor RB is connected with one end of the fourth resistor RB in series through the second metal wire, and the other end of the fourth resistor RB is provided with a fifth lead-out extension line to jointly form a third track wire;
one end of the first resistor RA is provided with a second access extension line, the other end of the first resistor RA is connected with one end of the fourth resistor RA in series through the first metal routing, and the other end of the fourth resistor RA is provided with a sixth lead-out extension line to jointly form a fourth track routing;
one end of the second resistor RA is provided with a third access extension line, the other end of the second resistor RA is connected with one end of the third resistor RA in series through the first metal wire, and the other end of the third resistor RA is provided with a seventh lead-out extension line to jointly form a fifth track wire;
one end of the second resistor RB is provided with a fourth access extension line, the other end of the second resistor RB is connected with one end of the third resistor RB in series through a second metal wire, and the other end of the third resistor RB is provided with an eighth lead-out extension line to form a sixth track wire together;
the third track wire, the fourth track wire, the fifth track wire and the sixth track wire are arranged in a snake shape and are parallel to each other;
the third trace routing is not crossed with the second resistor RB, the third resistor RB and all the resistors RA in space; the fourth trace routing is not crossed with the second resistor RA, the third resistor RA and all the resistors RB in space; the fifth track routing is not crossed with the first resistor RA, the fourth resistor RA and all the resistors RB in space; the sixth track routing is not crossed with the first resistor RB, the fourth resistor RB and all the resistors RA in space;
(1.3) the third resistance component includes: the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a fifth access extension line, and the other end of the first resistor RB is provided with a first wire outlet end, so that a seventh trace routing is formed;
one end of the first resistor RA is provided with a sixth access extension line, and the other end of the first resistor RA is provided with a second wire outlet end, so that an eighth trace routing is formed;
one end of the second resistor RA is provided with a seventh access extension line, and the other end of the second resistor RA is provided with a first line incoming end, so that a ninth trace is formed;
one end of the second resistor RB is provided with an eighth access extension line, and the other end of the second resistor RB is provided with a second line incoming end which jointly form a tenth track routing;
the seventh trace line, the eighth trace line, the ninth trace line and the tenth trace line are arranged in a snake shape and are parallel to each other;
the seventh trace routing is not crossed with the second resistor RB and all the resistors RA in space; the eighth track routing is not crossed with the second resistor RA and all the resistors RB in space; the ninth track routing is not crossed with the first resistor RA and all the resistors RB in space; the tenth trace is not crossed with the first resistor RB and all the resistors RA in space;
the total length of the first track trace, the fourth track trace, the fifth track trace, the eighth track trace and the ninth track trace is equal to the total length of the second track trace, the third track trace, the sixth track trace, the seventh track trace and the tenth track trace.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A high matching resistance routing method is characterized by comprising the following steps:
step (1): determining a minimum resistance component unit with high matching resistance; the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line;
one end of the first resistor RA is provided with an access extension line, the other end of the first resistor RA is connected with one end of the second resistor RA in series through the first metal wire, and the other end of the second resistor RA is provided with a lead-out extension line to jointly form a first track wire;
one end of the first resistor RB is provided with an access extension line, the other end of the first resistor RB is connected with one end of the second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length;
the first track routing and all the resistors RB are not intersected in space; the second track routing and all resistors RA are not crossed in space;
step (2): and sequentially connecting the N minimum resistance component units end to complete high-matching resistance routing.
2. The method as claimed in claim 1, wherein the type, size and parameters of the resistor RA and the resistor RB are the same.
3. The method for routing high matching resistance according to claim 1, wherein the first metal routing, the second metal routing, the access extension line and the lead-out extension line all use the same layer of metal.
4. A high matching resistance routing method according to claim 1, wherein said step (2) comprises:
connecting a leading-out extension line of a second resistor RA of the (N-1) th minimum resistance component unit with an access extension line of a first resistor RA of the Nth minimum resistance component unit;
and connecting the derived extension line of the second resistor RB of the (N-1) th minimum resistor assembly unit with the access extension line of the first resistor RB of the Nth minimum resistor assembly unit to finish high-matching resistor routing.
5. A high matching resistance routing method is characterized by comprising the following steps:
step (1): determining a first resistance component, a second resistance component and a third resistance component with high matching resistance;
(1.1) the first resistive component includes: the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of a first resistor RA is connected with one end of a third resistor RA in series through a first metal wire, and the other end of the third resistor RA is provided with a first lead-out extension line; the other end of the first resistor RA is connected in series with one end of a second resistor RA through the first metal wire, and the other end of the second resistor RA is provided with a second leading-out extension line to jointly form a first track wire;
one end of the first resistor RB is connected with one end of a third resistor RB in series through a second metal wire, and the other end of the third resistor RB is provided with a third leading-out extension line; the other end of the first resistor RB is connected with one end of a second resistor RB in series through the second metal wire, and the other end of the second resistor RB is provided with a fourth derived extended line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape and are parallel to each other;
the first track routing and all the resistors RB are not intersected in space; the second track routing and all resistors RA are not crossed in space;
(1.2) the second resistance component is formed by connecting N minimum resistance component units end to end; the minimum resistance component unit includes: the resistor RB, the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a first access extension line, the other end of the first resistor RB is connected with one end of the fourth resistor RB in series through the second metal wire, and the other end of the fourth resistor RB is provided with a fifth lead-out extension line to jointly form a third track wire;
one end of the first resistor RA is provided with a second access extension line, the other end of the first resistor RA is connected with one end of a fourth resistor RA in series through the first metal routing, and the other end of the fourth resistor RA is provided with a sixth lead-out extension line to jointly form a fourth track routing;
one end of the second resistor RA is provided with a third access extension line, the other end of the second resistor RA is connected with one end of a third resistor RA in series through the first metal wire, and the other end of the third resistor RA is provided with a seventh lead-out extension line to jointly form a fifth track wire;
one end of the second resistor RB is provided with a fourth access extension line, the other end of the second resistor RB is connected with one end of the third resistor RB in series through the second metal wire, and the other end of the third resistor RB is provided with an eighth lead-out extension line to jointly form a sixth track wire;
the third track wire, the fourth track wire, the fifth track wire and the sixth track wire are arranged in a snake shape and are parallel to each other;
the third trace routing is not intersected with the second resistor RB, the third resistor RB and all the resistors RA in space; the fourth trace routing is not crossed with the second resistor RA, the third resistor RA and all the resistors RB in space; the fifth trace routing is not spatially intersected with the first resistor RA, the fourth resistor RA and all the resistors RB; the sixth trace routing is not spatially intersected with the first resistor RB, the fourth resistor RB and all the resistors RA;
(1.3) the third resistive component includes: the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a fifth access extension line, and the other end of the first resistor RB is provided with a first wire outlet end, so that a seventh trace routing is formed;
one end of the first resistor RA is provided with a sixth access extension line, and the other end of the first resistor RA is provided with a second wire outlet end, so that an eighth trace routing is formed;
one end of the second resistor RA is provided with a seventh access extension line, and the other end of the second resistor RA is provided with a first line incoming end, so that a ninth trace is formed;
one end of the second resistor RB is provided with an eighth access extension line, and the other end of the second resistor RB is provided with a second line incoming end which jointly form a tenth track routing;
the seventh trace line, the eighth trace line, the ninth trace line and the tenth trace line are arranged in a snake shape and are parallel to each other;
the seventh trace routing is not spatially intersected with the second resistor RB and all the resistors RA; the eighth trace routing is not spatially intersected with the second resistor RA and all the resistors RB; the ninth trace routing is not crossed with the first resistor RA and all the resistors RB in space; the tenth trace routing is not spatially intersected with the first resistor RB and all resistors RA;
the total length of the first track wire, the fourth track wire, the fifth track wire, the eighth track wire and the ninth track wire is equal to the total length of the second track wire, the third track wire, the sixth track wire, the seventh track wire and the tenth track wire;
step (2): and the first resistor assembly, the second resistor assembly and the third resistor assembly are sequentially connected end to end respectively to complete high-matching resistor routing.
6. The method as claimed in claim 5, wherein the type, size and parameters of the resistor RA and the resistor RB are the same.
7. The method according to claim 5, wherein the first metal wire, the second metal wire, the first access extension line, the second access extension line, the third access extension line, the fourth access extension line, the fifth access extension line, the sixth access extension line, the seventh access extension line, the eighth access extension line, the first lead-out extension line, the second lead-out extension line, the third lead-out extension line, the fourth lead-out extension line, the fifth lead-out extension line, the sixth lead-out extension line, the seventh lead-out extension line, the eighth lead-out extension line, the first incoming wire end, the second incoming wire end, the first outgoing wire end, and the second outgoing wire end all use the same layer metal.
8. A high matching resistance routing method according to claim 5, wherein said step (2) comprises:
connecting the third leading-out extension line with a first access extension line of the 1 st minimum resistance component unit; connecting the first derived extension line with a second access extension line of the 1 st minimum resistance component unit; connecting the second derived extension line to a third access extension line of the 1 st minimum resistance component unit; connecting the fourth derived extension line to a fourth access extension line of the 1 st minimum resistance component unit;
connecting a fifth derived extension line of the (N-1) th minimum resistance component unit with a first access extension line of the (N) th minimum resistance component unit; connecting a sixth leading-out extension line of the (N-1) th minimum resistance component unit with a second access extension line of the (N) th minimum resistance component unit; connecting a seventh leading-out extension line of the (N-1) th minimum resistance component unit with a third access extension line of the (N) th minimum resistance component unit; connecting the eighth derived extension line of the (N-1) th minimum resistance component unit with the fourth access extension line of the (N) th minimum resistance component unit;
connecting a fifth derived extension line of the Nth minimum resistance component unit with the fifth access extension line; connecting a sixth leading-out extension line of the Nth minimum resistance component unit with the sixth access extension line; connecting a seventh lead-out extension line of the nth least resistive component unit to the seventh access extension line; and connecting the eighth lead-out extension line of the Nth minimum resistance assembly unit with the eighth access extension line to finish high-matching resistance routing.
9. A circuit layout of high matching resistance routing, comprising: n minimum resistance component units which are sequentially connected end to end;
the minimum resistance component unit includes: the resistor RA, the resistor RB and the resistor RA are sequentially arranged along a horizontal line;
one end of the first resistor RA is provided with an access extension line, the other end of the first resistor RA is connected with one end of the second resistor RA in series through the first metal wire, and the other end of the second resistor RA is provided with a lead-out extension line to jointly form a first track wire;
one end of the first resistor RB is provided with an access extension line, the other end of the first resistor RB is connected with one end of the second resistor RB in series through a second metal wire, and the other end of the second resistor RB is provided with a lead-out extension line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape, are parallel to each other and have equal length;
the first track routing and all the resistors RB are not intersected in space; the second trace routing and all resistors RA are not crossed in space.
10. A circuit layout for high matching resistance routing, comprising: the first resistor component, the second resistor component and the third resistor component are sequentially connected end to end;
(1.1) the first resistive component includes: the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of a first resistor RA is connected with one end of a third resistor RA in series through a first metal wire, and the other end of the third resistor RA is provided with a first lead-out extension line; the other end of the first resistor RA is connected in series with one end of a second resistor RA through the first metal wire, and the other end of the second resistor RA is provided with a second lead-out extension line to jointly form a first track wire;
one end of the first resistor RB is connected with one end of a third resistor RB in series through a second metal wire, and the other end of the third resistor RB is provided with a third leading-out extension line; the other end of the first resistor RB is connected with one end of a second resistor RB in series through the second metal wire, and the other end of the second resistor RB is provided with a fourth derived extended line to jointly form a second track wire;
the first track routing and the second track routing are arranged in a snake shape and are parallel to each other;
the first track routing and all the resistors RB are not intersected in space; the second track routing and all resistors RA are not crossed in space;
(1.2) the second resistance component is formed by connecting N minimum resistance component units end to end; the minimum resistance component unit includes: the resistor RB, the resistor RA, the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a first access extension line, the other end of the first resistor RB is connected with one end of the fourth resistor RB in series through the second metal wire, and the other end of the fourth resistor RB is provided with a fifth lead-out extension line to jointly form a third track wire;
one end of the first resistor RA is provided with a second access extension line, the other end of the first resistor RA is connected with one end of a fourth resistor RA in series through the first metal routing, and the other end of the fourth resistor RA is provided with a sixth lead-out extension line to jointly form a fourth track routing;
one end of the second resistor RA is provided with a third access extension line, the other end of the second resistor RA is connected with one end of a third resistor RA in series through the first metal wire, and the other end of the third resistor RA is provided with a seventh lead-out extension line to jointly form a fifth track wire;
one end of the second resistor RB is provided with a fourth access extension line, the other end of the second resistor RB is connected with one end of the third resistor RB in series through the second metal wire, and the other end of the third resistor RB is provided with an eighth lead-out extension line to jointly form a sixth track wire;
the third track wire, the fourth track wire, the fifth track wire and the sixth track wire are arranged in a snake shape and are parallel to each other;
the third trace routing is not intersected with the second resistor RB, the third resistor RB and all the resistors RA in space; the fourth trace routing is not crossed with the second resistor RA, the third resistor RA and all the resistors RB in space; the fifth trace routing is not spatially intersected with the first resistor RA, the fourth resistor RA and all the resistors RB; the sixth trace routing is not spatially intersected with the first resistor RB, the fourth resistor RB and all the resistors RA;
(1.3) the third resistive component includes: the resistor RB, the resistor RA and the resistor RB are sequentially arranged along a horizontal line;
one end of the first resistor RB is provided with a fifth access extension line, and the other end of the first resistor RB is provided with a first wire outlet end, so that a seventh trace routing is formed together;
one end of the first resistor RA is provided with a sixth access extension line, and the other end of the first resistor RA is provided with a second wire outlet end, so that an eighth trace routing is formed;
one end of the second resistor RA is provided with a seventh access extension line, and the other end of the second resistor RA is provided with a first line incoming end, so that a ninth trace is formed;
one end of the second resistor RB is provided with an eighth access extension line, and the other end of the second resistor RB is provided with a second line incoming end which jointly form a tenth track routing;
the seventh trace line, the eighth trace line, the ninth trace line and the tenth trace line are arranged in a snake shape and are parallel to each other;
the seventh trace is not crossed with the second resistor RB and all the resistors RA in space; the eighth trace routing is not spatially intersected with the second resistor RA and all the resistors RB; the ninth trace routing is not crossed with the first resistor RA and all the resistors RB in space; the tenth trace is not spatially intersected with the first resistor RB and all resistors RA;
the total length of the first track wire, the fourth track wire, the fifth track wire, the eighth track wire and the ninth track wire is equal to the total length of the second track wire, the third track wire, the sixth track wire, the seventh track wire and the tenth track wire.
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