CN212063962U - Single-power-supply high-speed fast-edge shaping circuit - Google Patents
Single-power-supply high-speed fast-edge shaping circuit Download PDFInfo
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- CN212063962U CN212063962U CN202021081232.1U CN202021081232U CN212063962U CN 212063962 U CN212063962 U CN 212063962U CN 202021081232 U CN202021081232 U CN 202021081232U CN 212063962 U CN212063962 U CN 212063962U
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Abstract
The utility model provides a high-speed shaping circuit that follows soon of single power supply, including U1 voltage comparator, R1 resistance, R2 resistance, R3 resistance, R4 resistance, R5 resistance, C1 electric capacity and C2 electric capacity, the sinusoidal signal input with the one end of C2 electric capacity is connected, the other end of C2 electric capacity with the one end of R5 resistance is connected, the other end of R5 resistance all with the one end of R3 resistance with the noninverting input of U1 voltage comparator is connected, the other end of R3 resistance all with the one end of R1 resistance, the one end of R4 resistance with the inverting input of U1 voltage comparator is connected, the output of U1 voltage comparator with the one end of R2 resistance is connected, the other end of R2 resistance with the pulse signal output is connected. The utility model provides a current comparator shaping circuit chip adopt the dual supply, and the rising edge precision hardly reaches the ns magnitude, the problem that the level of its output can not match with digital level well.
Description
Technical Field
The utility model relates to an integrated circuit field, more specifically relate to a shaping circuit is followed soon to single power supply's high speed.
Background
The output of high-precision time requires the precision of the rising edge of the pulse signal to reach the nanosecond (ns) order. The sine signal is shaped into a pulse signal with a fast edge before being accessed into FPGA (field programmable gate array) for digital processing, in order to be butted with a digital circuit in a signal processing process, the precision of the rising edge is required to reach ns magnitude, the output level of the rising edge is also required to be matched with the digital circuit, and a better pulse rising edge is obtained through a comparator shaping circuit usually. However, most comparator circuit chips adopt double power supplies, the rising edge precision is difficult to reach ns magnitude, and the output level of the comparator circuit chips cannot be well matched with the digitized level.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shaping circuit is followed soon at high speed of single power supply to solve current comparator shaping circuit chip and adopt the dual supply, rise and hardly reach the ns order of magnitude along the precision, the level of its output can not match the problem with digital level well.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a high-speed fast-edge shaping circuit powered by a single power supply comprises a single power supply, a sinusoidal signal input end, a pulse signal output end, a U1 voltage comparator, an R1 resistor, an R2 resistor, an R3 resistor, an R4 resistor, an R5 resistor, a C1 capacitor and a C2 capacitor, wherein the sinusoidal signal input end is connected with one end of the C2 capacitor, the other end of the C2 capacitor is connected with one end of the R5 resistor, the other end of the R5 resistor is connected with one end of the R3 resistor and the non-inverting input end of the U1 voltage comparator, the other end of the R3 resistor is connected with one end of the R1 resistor, one end of the R4 resistor and the inverting input end of the U1 voltage comparator, the other end of the R4 resistor, one end of the C9 capacitor and the negative power supply end of the U1 voltage comparator are all grounded, the other end of the R1 resistor, the other end of the C1 capacitor and the positive power supply voltage comparator are all connected with the single power supply circuit, the output end of the U1 voltage comparator is connected with one end of the R2 resistor, the other end of the R2 resistor is connected with the pulse signal output end, the sine signal input end is used for inputting sine signals, and the pulse signal output end is used for outputting pulse signals.
Further, the U1 voltage comparator is a voltage comparator of LVT3501 type.
Further, the voltage range of the single power supply of the circuit is 2.7V-5.5V.
Further, the capacitance of the C1 capacitor is 0.1 muF.
Further, the capacitance of the C2 capacitor is 0.01 μ F.
Preferably, the resistance of the R1 resistor is 1K Ω.
Preferably, the resistance of the R2 resistor is 50 Ω.
Preferably, the resistance of the R3 resistor is 51K omega.
Preferably, the resistance of the R4 resistor is 1K Ω.
Preferably, the resistance of the R5 resistor is 200K Ω.
Wherein, the circuit principle explains that: SINE-IN is a SINE signal input end, PLUSE-OUT is a pulse signal output end; the U1 voltage comparator is a single power supply voltage comparator of LTV3501 model; the voltage range of the single power supply VCC of the circuit is 2.7V-5.5V; the R1 resistor and the R4 resistor are connected to the inverting input end of the U1 voltage comparator in a voltage dividing mode and serve as reference points of the U1 voltage comparator, the C2 capacitor, the R5 resistor and the R3 resistor form a shaping signal input stage, and the R5 resistor is adjusted according to the amplitude of an input sinusoidal signal in practical application, so that the input voltage range of the non-inverting input end of the U1 voltage comparator is 20mV-50mV, and at the moment, the output pulse signal is a pulse signal output in a rail-to-rail level mode. And the resistance values of the R1 resistor and the R4 resistor can be adjusted according to the shaping requirements of the input sinusoidal signal, so that the reference point of the U1 voltage comparator is changed. The C2 capacitor plays a role in blocking an input sinusoidal signal, and the C1 capacitor plays a role in filtering interference of the single power supply VCC of the circuit.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses single power supply's high-speed fast edge shaping circuit is through setting up the single power of circuit, sinusoidal signal input end, the pulse signal output, U1 voltage comparator, R1 resistance, R2 resistance, R3 resistance, R4 resistance, R5 resistance, C1 electric capacity and C2 electric capacity, make this single power supply's high-speed fast edge shaping circuit have faster pulse rising edge, the rail is to the pulse signal of rail level output matches with the digital circuit level easily, and can choose single power supply for use, it is nimble to use the scene; the high-speed fast-edge shaping circuit powered by the single power supply only adopts a single comparator chip, namely the shaping function of the fast rising edge is completed, and simultaneously the matching of the level is also completed, the pulse amplitude value after shaping reaches 3.3V, the precision of the rising edge is close to 2nS, and the high-speed fast-edge shaping circuit is an ideal pulse shaping circuit.
Drawings
Fig. 1 is a schematic circuit diagram of a single power supply high-speed fast edge shaping circuit according to the present invention.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the presence of a first feature above or below a second feature may encompass direct contact of the first and second features, and may also encompass contact of the first and second features not being in direct contact, but via additional features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. Including a first feature being directly below and obliquely below a second feature, or simply indicating that the first feature is at a lesser elevation than the second feature, if present below, under or below the second feature.
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a structure of an embodiment of the present invention is shown for illustrative purposes only and is not limited to the structure.
Example one
As shown in fig. 1, a single power supply-powered high-speed fast edge shaping circuit includes a single power supply, a sinusoidal signal input terminal, a pulse signal output terminal, a U1 voltage comparator, an R1 resistor, an R2 resistor, an R3 resistor, an R4 resistor, an R5 resistor, a C1 capacitor, and a C2 capacitor, where the sinusoidal signal input terminal is connected to one end of the C2 capacitor, the other end of the C2 capacitor is connected to one end of the R5 resistor, the other end of the R5 resistor is connected to one end of the R3 resistor and a non-inverting input terminal of the U1 voltage comparator, the other end of the R3 resistor is connected to one end of the R1 resistor, one end of the R4 resistor, and an inverting input terminal of the U1 voltage comparator, the other end of the R4 resistor, one end of the C1 capacitor, and a negative power supply terminal of the U1 voltage comparator are all grounded, the other end of the R1 resistor, the other end of the C1 capacitor, and a positive power supply terminal of the U1 voltage comparator are all connected to the single power supply connection terminal The output end of the U1 voltage comparator is connected with one end of the R2 resistor, the other end of the R2 resistor is connected with the pulse signal output end, the sine signal input end is used for inputting a sine signal, and the pulse signal output end is used for outputting a pulse signal.
Further, the U1 voltage comparator is a voltage comparator of LVT3501 type.
Preferably, the circuit parameters are as follows:
the voltage range of the single power supply of the circuit is 2.7V-5.5V.
The capacitance of the C1 capacitor is 0.1 muF.
The capacitance of the C2 capacitor is 0.01 muF.
The resistance value of the R1 resistor is 1K omega.
The resistance of the R2 resistor is 50 omega.
The resistance value of the R3 resistor is 51K omega.
The resistance value of the R4 resistor is 1K omega.
The resistance value of the R5 resistor is 200K omega.
Wherein, the circuit principle explains that: SINE-IN is a SINE signal input end, PLUSE-OUT is a pulse signal output end; the U1 voltage comparator is a single power supply voltage comparator of LTV3501 model; the voltage range of the single power supply VCC of the circuit is 2.7V-5.5V; the R1 resistor and the R4 resistor are connected to the inverting input end of the U1 voltage comparator in a voltage dividing mode and serve as reference points of the U1 voltage comparator, the C2 capacitor, the R5 resistor and the R3 resistor form a shaping signal input stage, and the R5 resistor is adjusted according to the amplitude of an input sinusoidal signal in practical application, so that the input voltage range of the non-inverting input end of the U1 voltage comparator is 20mV-50mV, and at the moment, the output pulse signal is a pulse signal output in a rail-to-rail level mode. And the resistance values of the R1 resistor and the R4 resistor can be adjusted according to the shaping requirements of the input sinusoidal signal, so that the reference point of the U1 voltage comparator is changed. The C2 capacitor plays a role in blocking an input sinusoidal signal, and the C1 capacitor plays a role in filtering interference of the single power supply VCC of the circuit.
The above-mentioned embodiments are provided for illustration and not for limitation, and the changes of the examples and the replacement of equivalent elements should be understood as belonging to the scope of the present invention.
From the above detailed description, it will be apparent to those skilled in the art that the present invention can be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein.
Claims (5)
1. A high-speed fast-edge shaping circuit powered by a single power supply is characterized by comprising a single power supply, a sinusoidal signal input end, a pulse signal output end, a U1 voltage comparator, an R1 resistor, an R2 resistor, an R3 resistor, an R4 resistor, an R5 resistor, a C1 capacitor and a C2 capacitor, wherein the sinusoidal signal input end is connected with one end of the C2 capacitor, the other end of the C2 capacitor is connected with one end of the R5 resistor, the other end of the R5 resistor is connected with one end of the R3 resistor and the non-inverting input end of the U1 voltage comparator, the other end of the R3 resistor is connected with one end of the R1 resistor, one end of the R4 resistor and the inverting input end of the U1 voltage comparator, the other end of the R4 resistor, one end of the C1 capacitor and the negative power supply end of the U1 voltage comparator are all grounded, and the other end of the R1 resistor, the other end of the C1 capacitor and the U1 voltage comparator are all connected with the single power supply end of the power supply circuit And the output end of the U1 voltage comparator is connected with one end of the R2 resistor, the other end of the R2 resistor is connected with the pulse signal output end, the sine signal input end is used for inputting a sine signal, and the pulse signal output end is used for outputting a pulse signal.
2. The single power supply high speed fast edge shaping circuit according to claim 1, wherein the U1 voltage comparator is a LVT3501 model voltage comparator.
3. A single power supply high speed fast edge shaping circuit as claimed in claim 1, wherein the voltage of the circuit single power supply is in the range of 2.7V to 5.5V.
4. The single power supply high speed fast edge shaping circuit of claim 1 wherein the capacitance of said C1 capacitor is 0.1 μ F.
5. The single power supply high speed fast edge shaping circuit of claim 1 wherein the capacitance of said C2 capacitor is 0.01 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081232.1U CN212063962U (en) | 2020-06-12 | 2020-06-12 | Single-power-supply high-speed fast-edge shaping circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021081232.1U CN212063962U (en) | 2020-06-12 | 2020-06-12 | Single-power-supply high-speed fast-edge shaping circuit |
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| Publication Number | Publication Date |
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| CN212063962U true CN212063962U (en) | 2020-12-01 |
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| CN202021081232.1U Active CN212063962U (en) | 2020-06-12 | 2020-06-12 | Single-power-supply high-speed fast-edge shaping circuit |
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