TW201440426A - Network resistor - Google Patents

Abstract

A network resistor including a plurality of resistor groups and at least one second resistor element is provided. The resistor groups respectively include a plurality of first resistor elements, and each of the first resistor elements has a first resistance. The second resistor element and the resistor groups are arranged interlacedly, and the second resistor element has a second resistance different from the first resistance.

Description

Exclusion resistor

The present invention relates to a resistor, and more particularly to a resistor that improves signal transmission quality.

As process evolution and technology advances, circuit components such as Central Processing Units (CPUs) or Dynamic Random Access Memory (DRAMs) are also operating faster. For Printed Circuit Board Layout Design, the increased operating speed of circuit components also means that the difficulty of layout design is relatively increased.

Resistors are the basic electronic components that are often used in circuit design. In a printed circuit board layout, the resistor can be implemented in the form of a single resistor or an exclusion resistor. Among them, since the single-resistance pad is large, it is easy to cause signal loss during high-speed signal transmission, thereby degrading the signal transmission quality. In addition, the use of a single resistor also increases the trace length of the circuit layout compared to the exclusion, resulting in an increase in the area of the printed circuit board.

Therefore, in the layout of high-speed circuits, 4 input pins are generally used. -4 Output pin exclusion. This type of exclusion usually includes four resistive elements of the same resistance value, thereby providing a signal transmission path for two sets of high-speed signals, wherein the area of the circuit layout can be saved because the distance between the respective resistive elements is relatively close.

However, also because the distance between the respective resistive elements is relatively close, crosstalk is prone to crosstalk between the signal transmission paths provided by the respective resistive elements when high speed signals are transmitted. In addition, for high speed signals, there is no complete ground signal in this type of resistor for reference. All of the above problems will reduce the transmission quality of high-speed signals.

In view of this, the present invention provides an ohmic resistor that can effectively improve signal transmission quality on a circuit board.

The resistor of the present invention includes a plurality of resistor groups and at least one second resistor element. The plurality of resistor groups respectively include a plurality of first resistance elements, and each of the first resistance elements has a first resistance value. The second resistive element is interleaved with the plurality of resistor groups, wherein the second resistive element has a second resistance value that is different from the first resistance value.

In an embodiment of the invention, the resistor group includes first and second resistor groups, wherein the first and second resistor groups respectively comprise two first resistor elements. The second resistive element is disposed between the first and second resistor groups.

In an embodiment of the invention, the resistor group further includes a third resistor group, wherein the third resistor group includes two first resistor elements. The second resistive elements One of the second resistor elements is disposed between the first and second resistor groups, and the other of the second resistor elements is disposed between the second and third resistor groups.

In an embodiment of the invention, the resistor further includes a plurality of input pins and a plurality of output pins. The plurality of input pins are respectively coupled to the first resistance element and one end of the second resistance element. The plurality of output pins are respectively coupled to the first resistance element and the other end of the second resistance element. The second resistive element is adapted to be coupled to a ground terminal.

The resistor of the present invention includes n+1 resistor groups and n second resistor elements, where n is greater than or equal to 1, and is a positive integer. Each of the resistor groups includes two first resistance elements, and each of the first resistance elements has a first resistance value. Each of the second resistive elements is alternately arranged with each of the resistor groups, wherein each of the second resistive elements has a second resistance value that is different from the first resistance value.

In an embodiment of the invention, the resistor further includes 3n+2 input pins and 3n+2 output pins. The input pins are respectively coupled to the first resistive element and one end of the second resistive element. The output pins are respectively coupled to the first resistance element and the other end of the second resistance element.

The resistor of the present invention includes at least one resistor group and a plurality of second resistor elements. The resistor group includes a plurality of first resistance elements, and each of the first resistance elements has a first resistance value. The plurality of second resistive elements are respectively staggered with the resistance group, wherein each of the second resistive elements has a second resistance value different from the first resistance value.

In an embodiment of the invention, the resistor group includes a first group of resistors. The first resistance group includes two first resistance elements, wherein the first resistance group is disposed between one of the plurality of second resistance elements and the other of the plurality of second resistance elements.

In an embodiment of the invention, the resistor group further includes a second resistor group. The second resistance group includes two first resistance elements, wherein the second resistance group is disposed between the other of the second resistance elements and the other of the plurality of second resistance elements.

In an embodiment of the invention, the resistor further includes a plurality of input pins and a plurality of output pins. The plurality of input pins are respectively coupled to the first resistance element and one end of the second resistance element. The plurality of output pins are respectively coupled to the first resistance element and the other end of the second resistance element.

Based on the above, an embodiment of the present invention provides a resistor device, wherein the resistor is configured with a plurality of resistor elements having different resistance values, and the resistor elements of different resistance values are arranged in a staggered manner on the resistors. In the device. When applying the wiring structure of the circuit breaker design circuit board, the designer can couple the resistance element having the first resistance value to the corresponding signal line and couple the resistance element having the second resistance value to the ground net The way of the road configuration is such that the coupling phenomenon between the signal lines of each group is shielded by the ground signal, thereby suppressing crosstalk interference between the signal lines and improving the quality of the signal transmission.

The above described features and advantages of the invention will be apparent from the following description.

10, 10'‧‧‧ boards

100, 200, 200_1~200_3, 400, 500, 600, 600_1~600_7, 800‧‧ ‧ Exclusions

110, 210_1, 210_2, 410_1, 410_2, 410_3, 510, 610, 810_1, 810_2‧‧‧ resistance group

112, 212_1~212_4, 412_1~412_6, 512, 612_1, 612_2, 812_1~812_4‧‧‧ first resistance element

120, 220, 420_1, 420_2, 520, 620_1, 620_2, 820_1~820_3‧‧‧ second resistive element

GND‧‧‧ ground terminal

IP‧‧‧ input pin

OP‧‧‧ output pin

TL‧‧‧ signal line

TLP‧‧‧ signal pair

VIA‧‧‧Tongkong

1 is a schematic view of a resistor according to an embodiment of the present invention.

2 is a schematic structural view of a resistor according to an embodiment of FIG. 1.

3 is a schematic view showing the wiring structure of a circuit board to which the resistor of FIG. 2 is applied.

4 is a schematic structural view of a resistor according to another embodiment of FIG. 1.

FIG. 5 is a schematic diagram of a resistor according to another embodiment of the present invention.

FIG. 6 is a schematic structural view of a resistor according to an embodiment of FIG. 5. FIG.

FIG. 7 is a schematic diagram showing the wiring structure of a circuit board to which the resistor of FIG. 6 is applied.

FIG. 8 is a schematic structural view of a resistor according to another embodiment of FIG. 5. FIG.

The embodiment of the invention provides a resistor device, wherein the resistor is configured with a plurality of resistor elements having different resistance values, and the resistor elements of different resistance values are arranged in a staggered manner in the resistor. When applying the wiring structure of the circuit breaker design circuit board, the designer can couple the resistance element having the first resistance value to the corresponding signal line and couple the resistance element having the second resistance value to the ground net The way of the road configuration is such that the coupling phenomenon between the signal lines of each group is shielded by a ground signal, thereby suppressing crosstalk interference between the signal lines and improving the quality of the signal transmission. In order to make the content of the present disclosure easier to understand, the following specific embodiments are examples that can be implemented by the present disclosure. In addition, wherever possible, the elements and/

1 is a schematic view of a resistor according to an embodiment of the present invention. Referring to FIG. 1 , the resistor 100 includes a plurality of resistor groups 110 and at least one second resistor element. 120. A plurality of first resistive elements 112 are included in the resistor group 110, and each of the first resistive elements 112 has a first resistance value. The second resistive element 120 is staggered with the resistor group 110, and the second resistive element 120 has a second resistance value that is different from the first resistance value.

More specifically, in the resistor 100, each n+1 resistor group 110 is correspondingly configured with n second resistor elements 120, and each of the second resistor elements 120 is staggered with the resistor group 110. Where n is a positive integer and its value can be changed according to design requirements. That is, in the resistor 100, a second resistance element is disposed between every two resistance groups 110.

For example, taking two first resistive elements 112 in each resistor group 110 as an example, if n=1, the resistor 100 will include five resistive elements 112 and 120, wherein each resistive element 112 and 120 The order of arrangement from top to bottom (relative to the direction shown in the drawing) is 112→112→120→112→112; if n=2, the resistor 100 will include 8 resistance elements 112 and 120, wherein The order of arrangement of the respective resistance elements 112 and 120 from top to bottom is 112→112→120→112→112→120→112→112, and the rest of the configurations can be deduced by analogy.

2 is a schematic structural view of a resistor according to an embodiment of FIG. 1, and FIG. 3 is a schematic diagram of a wiring structure of a circuit board to which the resistor of FIG. 2 is applied.

Referring first to FIG. 2, the resistor 200 includes resistor groups 210_1 and 210_2 and a second resistor element 220, wherein the resistor groups 210_1 and 210_2 respectively include two The first resistance elements 212_1~212_2 and 212_3~212_4. In addition, the resistors 200 further include a plurality of input pins IP and output pins OP for coupling with external circuits, wherein the respective input pins IP are respectively coupled to the first resistance elements 212_1 212 212_4 and One end of the two resistive elements 220, and each of the output pins OP is coupled to the other ends of the first resistive elements 212_1 212212_4 and the second resistive element 220, respectively. In other words, in the configuration of the present embodiment, the resistor 200 has a structure of a 5-pin input-5 pin output.

From the viewpoint of the specific application of the resistor 200, please refer to FIG. 2 and FIG. 3 at the same time, the wiring structure of the circuit board 10 includes a signal line pair TLP, a through hole VIA, a ground GND, a resistors 200_1~200_3, and other electronic Components (such as capacitors, inductors or transistors, etc.) (not shown). In the present embodiment, the circuit board 10 is, for example, a printed circuit board having a two-layer board structure. Each signal line pair TLP includes two signal lines TL, one of which can be used to transfer a set of transmission signals. The via VIA and the ground GND are electrically connected to each other to form a ground network, wherein the ground network provides a ground signal as a reference for each transmission signal on the circuit board 10. Further, the resistors 200_1 200 200_3 are physical wiring structures of the resistors 200 shown in FIG. 2 on the circuit board 10.

In detail, the designer can select a resistive element having a specific and non-zero resistance value as the first resistive element 212_1~212_4 among the respective resistors 200_1~200_3 according to requirements, and select a resistance value substantially equal to 0 ohm. The resistive element serves as the second resistive element 220 of each of the resistors 200_1 200 200_3. In practical applications, the second resistive element 220 can be implemented using a low impedance wire, but the present invention does not This is limited.

In addition, it should be noted that those skilled in the art should understand that the "resistance value is substantially equal to 0 ohm" means that the resistance value approaches a very small value so that both ends of the second resistive element 220 can be regarded as short-circuited to each other. The connection does not mean that the resistance value of the second resistance element 220 is completely equal to zero.

In the circuit board 10, the first resistance elements 212_1~212_4 of the respective resistors 200_1~200_3 are respectively coupled to the corresponding signal lines TL through the corresponding input pins IP and the output pins OP, thereby providing a specific resistance value. Signal transmission path. Among them, a resistance group (such as 210_1 or 210_2) can be used as a signal transmission path for a group of transmission signals. In addition, the second resistive elements 220 of the respective resistors 200_1 200-200-3 are respectively coupled to the adjacent vias VIA or ground GND through corresponding input pins IP and output pins OP to be commonly coupled to the ground grid. road.

According to the above configuration, in each of the resistors 200_1~200-3, each group of transmission signals is separated by a second resistance element 220 which can be regarded as a short circuit to the ground network, so that each group transmits signals. The coupling phenomenon between the two is blocked by the ground signal on the second resistive element 220, thereby suppressing crosstalk interference between the transmitted signals. In addition, in the resistors 200_1~200_3, each group of transmission signals can use the ground signal on the adjacent second resistance element 220 as a reference, so that the transmission signal is less likely to cause distortion. Moreover, compared with the conventional 4-input pin-4 output pin resistor, since the resistor device 200 of the embodiment only adds one resistor element, the overall volume is not the same as the conventional one. There are too many differences in the resistors.

It should be noted that the wiring structure of the circuit board 10 illustrated in FIG. 3 is only for the application of the resistor device 200 of the embodiment of the present invention, wherein the relative arrangement between the various electronic components on the circuit board 10 is actually according to the circuit. The design considerations of the designer are changed, and the invention is not limited thereto.

4 is a schematic structural view of a resistor according to another embodiment of FIG. 1. Referring to FIG. 4, the resistor 400 includes resistor groups 410_1~410_3 and second resistor elements 420_1 and 420_2, wherein the resistor groups 410_1~410_3 include two first resistor elements 412_1~412_2, 412_3~412_4, and 412_5~412_6, respectively. . In addition, the resistor 400 also includes a plurality of input pins IP and an output pin OP, wherein each of the input pins IP is coupled to one ends of the first resistance elements 412_1 412 412_6 and the second resistance elements 420_1 and 420_2, and each output The pin OP is coupled to the other ends of the first resistance elements 412_1 412 412_6 and the second resistance elements 420_1 and 420_2, respectively.

Compared to the resistor 200 of FIG. 2, the resistor 400 of the present embodiment has an 8-pin input-8 pin output structure. In addition, the structural and application characteristics of the resistors 400 are substantially the same as those of the resistors 200. Therefore, the same or similar parts are referred to the foregoing embodiments, and the detailed description thereof will not be repeated.

According to the teachings of the embodiment of FIG. 2 and FIG. 4, various embodiments of the resistor 100 illustrated in the embodiment of FIG. 1 have been sufficiently supported. Those skilled in the art should be able to infer the other different pin count resistors from the embodiment of FIG. 1 to FIG. 3, and the present invention is not limited to the embodiment shown in the above embodiment.

FIG. 5 is a schematic diagram of a resistor according to another embodiment of the present invention. Exclusion device 500 At least one resistor group 510 and a plurality of second resistive elements 520 are included. A plurality of first resistive elements 512 are included in the resistor group 510, and each of the first resistive elements 512 has a first resistance value. The second resistive element 520 is interleaved with the resistor group 510, and the second resistive element 520 has a second resistance value that is different from the first resistance value.

More specifically, in the resistor 500, n+1 second resistance elements 520 are correspondingly arranged for each n resistance groups 510, and each of the second resistance elements 520 is staggered with the resistance group 510. That is, in the resistor 500, a resistance group 510 is disposed between every two second resistance elements 520.

For example, taking two first resistive elements 512 in each resistor group 510 as an example, if n=1, the resistor 500 will include four resistive elements 512 and 520, wherein each resistive element 512 and 520 The order of arrangement from top to bottom (relative to the direction shown in the drawing) is 520→512→512→520; if n=2, the resistor 500 will include 7 resistance elements 512 and 520, wherein each resistor The order of the elements 512 and 520 from top to bottom is 520→512→512→520→512→512→520, which can be deduced in the configuration.

In order to further illustrate the embodiments of the present invention, FIG. 6 is a schematic structural view of a resistor according to an embodiment of FIG. 5, and FIG. 7 is a schematic diagram of a wiring structure of a circuit board to which the resistor of FIG. 5 is applied.

Referring first to FIG. 6, the resistor 600 includes a resistor group 610 and second resistive elements 620_1 and 620_2, wherein the resistor group 610 includes two first resistive elements 612_1 and 612_2. In addition, the resistor 400 further includes a plurality of input pins IP and an output pin OP for coupling with external circuits, wherein each input pin IP is respectively One ends of the first resistance elements 612_1 and 612_2 and the second resistance elements 620_1 and 620_2 are coupled, and the respective output pins OP are coupled to the other ends of the first resistance elements 612_1 and 612_2 and the second resistance elements 620_1 and 620_2, respectively. In other words, in the configuration of the present embodiment, the resistor 600 has a structure of a 4-pin input - 4 pin output.

From the viewpoint of the specific application of the resistor 600, please refer to FIG. 6 and FIG. 7 at the same time, the wiring structure of the circuit board 10' includes the signal line TL, the through hole VIA, the ground GND, the resistors 600_1~600_7, and other electronic Components (such as capacitors, inductors or transistors, etc.) (not shown). In this embodiment, the circuit board 10' is substantially the same as the circuit board 10 of the foregoing embodiment of FIG. 3, and the difference between the two is only in the type of the resistors to be applied. Therefore, the same or similar parts are referred to the above embodiment. The description of this will not be repeated here. Further, the resistors 600_1 to 600_7 are physical wiring structures of the resistor 600 shown in Fig. 6 on the board 10'.

In detail, the designer may select a resistance element having a specific and non-zero resistance value as the first resistance elements 612_1 and 612_2 among the respective resistors 600_1 600 600_7 according to requirements, and select a resistance value substantially equal to 0 ohm. The resistive element serves as the second resistive element 620 of each of the resistors 600_1 600 600_7.

In the circuit board 10', the first resistance elements 612_1 and 612_2 of the respective resistors 600_1~600_7 are respectively coupled to the corresponding signal lines TL through the corresponding input pins IP and the output pins OP, thereby providing a specific resistance value. Signal transmission path. Among them, a resistor group (such as 610) can be used as a signal transmission path for transmitting signals. In addition, the second resistance elements 620_1 of the respective resistors 600_1 600 600_7 The 620-2 and the output pin OP are respectively coupled to the adjacent through hole VIA or the ground GND through the corresponding input pin IP to be coupled to the ground network.

According to the above configuration, in each of the resistors 600_1~600_7, two resistor elements 620_1 and 620_2, which can be short-circuited to the ground network, are disposed on both sides of each group of transmission signals, so that the respective resistors 600_1~ The coupling phenomenon between the transmission signals corresponding to 600_7 is shielded by the ground signal on the second resistance elements 620_1 and 620_2, thereby suppressing crosstalk interference between the transmission signals. In addition, in the resistors 600_1~600_7, each group of transmission signals can use the ground signal on the adjacent second resistance elements 620_1 and 620_2 as a reference, so that the transmission signal is less likely to cause a distortion phenomenon.

It should be noted that the wiring structure of the circuit board 10' illustrated in FIG. 7 is only for the application of the resistor 600 of the embodiment of the present invention, wherein the relative arrangement between the various electronic components on the circuit board 10' will actually According to the design considerations of the circuit designer, the invention is not limited thereto.

FIG. 8 is a schematic structural view of a resistor according to another embodiment of FIG. 5. FIG. Referring to FIG. 8 , the resistor 800 includes resistor groups 810_1 and 810_2 and second resistance elements 820_1 ～ 820_3. The resistor groups 810_1 and 810_2 respectively include two first resistance elements 812_1 81212_2 and 812_3 812 812_4. In addition, the resistor 400 also includes a plurality of input pins IP and an output pin OP, wherein each of the input pins IP is coupled to one ends of the first resistance elements 812_1 812 812_4 and the second resistance elements 820_1 820 820_3, and each output The pins OP are respectively coupled to the other ends of the first resistance elements 812_1 812 812_4 and the second resistance elements 820_1 820 820_3.

Compared with the resistor 600 of FIG. 6, the resistor 800 of the present embodiment has a 7-pin input-7-pin output structure. In addition, the structural and application characteristics of the resistor 800 are substantially the same as those of the resistor 600. Therefore, the same or similar parts are referred to the foregoing embodiments, and details are not described herein again.

According to the teachings of the embodiment of FIG. 6 and FIG. 8, various embodiments of the resistor 500 illustrated in the embodiment of FIG. 5 have been sufficiently supported. Those skilled in the art should be able to infer the other different pin count resistors from the embodiment of FIG. 5 to FIG. 8 , and the present invention is not limited to the embodiment shown in the above embodiments.

In summary, the embodiment of the present invention provides a resistor device, wherein the resistor is configured with a plurality of resistor elements having different resistance values, and the resistor elements of different resistance values are arranged in a staggered manner. In the resistor. When applying the wiring structure of the circuit breaker design circuit board, the designer can couple the resistance element having the first resistance value to the corresponding signal line and couple the resistance element having the second resistance value to the ground net The way of the road configuration is such that the coupling phenomenon between the signal lines of each group is shielded by the ground signal, thereby suppressing crosstalk interference between the signal lines and improving the quality of the signal transmission.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Exclusions

110‧‧‧Resistance group

112‧‧‧First resistance element

120‧‧‧second resistance element

Claims (14)

An resistor comprising: a plurality of resistor groups each including a plurality of first resistor elements, and each of the first resistor elements has a first resistance value; and at least one second resistor element, and the resistor groups The group is staggered, wherein the at least one second resistive element has a second resistance value that is different from the first resistance value. The resistor of claim 1 , wherein the resistor groups comprise: a first resistor and a second resistor group, respectively comprising two first resistor elements, wherein the second resistor component is disposed on the resistor Between the first and the second resistor group. The resistor of claim 2, wherein the resistor group further comprises: a third resistor group comprising two first resistor elements, wherein one of the second resistor elements is disposed Between the first and the second resistor group, and the other of the second resistor elements is disposed between the second and the third resistor group. The resistor of claim 1, further comprising: a plurality of input pins respectively coupled to the first resistance element and one end of the at least one second resistance element; and a plurality of output pins, The first resistance element and the other end of the at least one second resistance element are respectively coupled. The resistor of claim 1, wherein the at least one second resistive element is adapted to be coupled to a ground. The resistor of claim 1, wherein the at least one second resistive element is a low impedance conductor. An resistor comprising: n+1 resistor groups, each of the resistor groups includes two first resistor elements, and each of the first resistor elements has a first resistance value, wherein n is greater than or equal to 1 And a plurality of second resistance elements, each of the second resistance elements being alternately arranged with each of the resistance groups, wherein each of the second resistance elements has a different value from the first resistance value The second resistance value. The resistor of claim 7, further comprising: 3n+2 input pins respectively coupled to the first resistance elements and one ends of the second resistance elements; and 3n+2 outputs The pins are respectively coupled to the first resistance elements and the other ends of the second resistance elements. An resistor comprising: at least one resistor group, wherein the at least one resistor group includes a plurality of first resistance elements, and each of the first resistance elements has a first resistance value; and a plurality of second resistance elements And each of the at least one resistor group is alternately arranged, wherein each of the second resistor elements has a second resistance value different from the first resistance value. The resistor of claim 9, wherein the at least one resistor group comprises: A first resistor group includes two first resistor elements, wherein the first resistor group is disposed between one of the second resistor elements and the other of the second resistor elements. The resistor of claim 10, wherein the at least one resistor group further comprises: a second resistor group including two first resistor elements, wherein the second resistor group is disposed therein Another second resistive element and another one of the second resistive elements. The resistor of claim 9, further comprising: a plurality of input pins respectively coupled to the first resistor elements and one end of the second resistor elements; and a plurality of output pins, respectively The first resistance elements and the other ends of the second resistance elements are coupled. The resistor of claim 9, wherein the second resistor elements are adapted to be coupled to a ground. The resistor of claim 9, wherein the second resistor elements are each a low impedance conductor.