CN104935310A - Novel hysteresis comparator applied to multivibrator - Google Patents
Novel hysteresis comparator applied to multivibrator Download PDFInfo
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Abstract
The invention discloses a novel hysteresis comparator applied to a multivibrator. Then novel hysteresis comparator comprises a hysteresis comparator input grade circuit and a hysteresis comparator output grade circuit. The applied multivibrator further comprises a first resistor, a second resistor, a charge circuit, a discharge circuit, a capacitor, a power access port, a grounding port and an output port. The charge and discharge state of the capacitor is controlled through the high and low level state of the output port, voltage of the same-phase input end of the hysteresis comparator input grade circuit is changed accordingly, and the level state of the output port is changed according to the level difference state of the same-phase input end and the anti-phase input end of the hysteresis comparator input grade circuit. By use of a hysteresis comparator circuit structure, the multivibrator outputs shock signals and is free from the influences of working voltages accessed by the power access port, the frequency stability is improved, the circuit structure is simple, total integration is realized quite easily, the integration is high, there is almost no DC power consumption, the battery efficiency is improved, and rapid oscillation-starting work can be realized.
Description
Technical field
The present invention relates to oscillator technique field, particularly relate to a kind of novel hysteresis comparator being applied to multivibrator.
Background technology
Multivibrator is a kind of self-excited oscillator that can produce square wave, also claims square-wave generator.Operationally, the state of circuit automatically checker between two temporary stable states, produces rectangular wave pulse signal thus, is commonly used for the clock signal in pulse signal source and sequence circuit.
Traditional multivibrator is cut-in operation voltage mainly, and make two electronic device alternate conduction and cut-off by resistance-capacitance coupling, thus self-excitation produces square wave.The concussion frequency of traditional multivibrator changes greatly with the change of operating voltage and produces larger tail current, there is the shortcoming that DC power is large.
Summary of the invention
Based on this, be necessary for the problems referred to above, the novel hysteresis comparator being applied to multivibrator that a kind of DC power is little is provided.
A kind of novel hysteresis comparator being applied to multivibrator, comprise hysteresis comparator input stage circuit and hysteresis comparator output-stage circuit, described hysteresis comparator input stage circuit comprises in-phase input end, inverting input, the first output and the second output, and described hysteresis comparator output-stage circuit comprises first input end, the second input and output;
The in-phase input end of described hysteresis comparator input stage circuit is for the common port of the charging circuit and electric capacity that connect multivibrator, and the inverting input of described hysteresis comparator input stage circuit is for the common port of the first resistance and the second resistance that connect multivibrator; First output of described hysteresis comparator input stage circuit connects the first input end of described hysteresis comparator output-stage circuit, second output of described hysteresis comparator input stage circuit connects the second input of described hysteresis comparator output-stage circuit, and the output of described hysteresis comparator output-stage circuit is for connecting the described output port of multivibrator;
Described hysteresis comparator input stage circuit is used for when the voltage of its in-phase input end is more than or equal to the voltage of its inverting input and default positive breakover voltage sum, control its first output and export high level, and when the difference of the voltage that the voltage of its in-phase input end is less than or equal to its inverting input with the negative breakover voltage preset, control its second output and export high level; Described hysteresis comparator output-stage circuit is used for when its first input end receives high level, control its output and export high level, and when its second input receives high level, control its output output low level, thus make the output port outputting oscillation signal of described multivibrator.
The multivibrator that novel hysteresis comparator is applied also comprises the first resistance, the second resistance, charging circuit, discharge circuit, electric capacity, plant-grid connection port, grounding ports and output port.First resistance and the second resistant series, the other end of the first resistance connects plant-grid connection port, and the other end of the second resistance connects grounding ports; The input of charging circuit connects plant-grid connection port, and output connects electric capacity one end, and the control end of charging circuit connects output port, and the electric capacity other end connects grounding ports; The input of discharge circuit connects the common port of charging circuit and electric capacity, and the output of discharge circuit connects grounding ports, and the control end of discharge circuit connects output port.Charging circuit is used for charging to electric capacity when output port output low level, raises the voltage of the in-phase input end of hysteresis comparator input stage circuit; Discharge circuit is used for discharging to electric capacity when output port exports high level, reduces the voltage of the in-phase input end of hysteresis comparator input stage circuit.
The above-mentioned novel hysteresis comparator being applied to multivibrator, hysteresis comparator input stage circuit is when the voltage of its in-phase input end is more than or equal to the voltage of its inverting input and positive breakover voltage sum, control its first output and export high level, and when the voltage of its in-phase input end is less than or equal to the difference of the voltage of its inverting input and negative breakover voltage, controls its second output and export high level.Hysteresis comparator output-stage circuit, when its first input end receives high level, controls its output and exports high level, and when its second input receives high level, control its output output low level, make output port outputting oscillation signal.By the charging and discharging state of the low and high level state control capacitance of output port, thus change the voltage of the in-phase input end of hysteresis comparator input stage circuit, the level state of output port is changed according to the in-phase input end of hysteresis comparator input stage circuit and the level difference value state of inverting input.Hysteresis comparator circuit structure is adopted to realize multivibrator, export oscillator signal, not by the impact of the operating voltage of power supply access interface access, compared with traditional multivibrator, there is frequency stability high, DC power is little, integrated level advantages of higher, and makes multivibrator Induction Peried short thus reduce the available machine time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of multivibrator in an embodiment;
Fig. 2 is the schematic diagram of hysteresis comparator input stage circuit in Fig. 1.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
A kind of novel hysteresis comparator being applied to multivibrator, as shown in Figure 1, comprise hysteresis comparator input stage circuit 110 and hysteresis comparator output-stage circuit 120, hysteresis comparator input stage circuit 110 comprises in-phase input end v+, inverting input v-, the first output and the second output, and hysteresis comparator output-stage circuit 120 comprises first input end, the second input and output.
The multivibrator that novel hysteresis comparator is applied also comprises the first resistance R1, the second resistance R2, charging circuit 130, discharge circuit 140, electric capacity C1, plant-grid connection port VDD, grounding ports GND and output port vo, and charging circuit 130 and discharge circuit 140 include input, output and control end.First resistance R1 and the second resistance R2 connects, and the other end of the first resistance R1 connects plant-grid connection port VDD, and the other end of the second resistance R2 connects grounding ports GND; The input of charging circuit 130 connects plant-grid connection port VDD, and output connects electric capacity C1 one end, and the control end of charging circuit 130 connects output port vo, and the electric capacity C1 other end connects grounding ports GND; The input of discharge circuit 140 connects the common port of charging circuit 130 and electric capacity C1, and the output of discharge circuit 140 connects grounding ports GND, and the control end of discharge circuit 140 connects output port vo.
The in-phase input end v+ of hysteresis comparator input stage circuit 110 is for the common port of the charging circuit 130 with electric capacity C1 that connect multivibrator, and the inverting input of hysteresis comparator input stage circuit 110 is for the common port of the first resistance R1 and the second resistance R2 that connect multivibrator; First output of hysteresis comparator input stage circuit 110 connects the first input end of hysteresis comparator output-stage circuit 120, second output of hysteresis comparator input stage circuit 110 connects the second input of hysteresis comparator output-stage circuit 120, and the output of hysteresis comparator output-stage circuit 120 is for connecting output port vo.
First resistance R1 and the second resistance R2 of multivibrator carry out dividing potential drop to the voltage that power access end VDD accesses, for the inverting input v-of hysteresis comparator input stage circuit 110 provides reference voltage.Charging circuit 130 charges to electric capacity C1 when output port vo output low level, raises the voltage of the in-phase input end v+ of hysteresis comparator input stage circuit 110.Discharge circuit 140 discharges to electric capacity C1 when output port vo exports high level, reduces the voltage of the in-phase input end v+ of hysteresis comparator input stage circuit 110.
Hysteresis comparator input stage 110 circuit is used for when the voltage of its in-phase input end v+ is more than or equal to the voltage of its inverting input v-and default positive breakover voltage sum, control its first output and export high level, and when the difference of the voltage that the voltage of its in-phase input end v+ is less than or equal to its inverting input v-with the negative breakover voltage preset, control its second output and export high level.Hysteresis comparator output-stage circuit 120 is for when its first input end receives high level, control its output and export high level, and when its second input receives high level, control its output output low level, thus make the output port vo outputting oscillation signal of multivibrator.
The above-mentioned novel hysteresis comparator being applied to multivibrator, hysteresis comparator input stage circuit 110 is when the voltage of its in-phase input end v+ is more than or equal to the voltage of its inverting input v-and positive breakover voltage sum, control its first output and export high level, and when the voltage of its in-phase input end v+ is less than or equal to the difference of the voltage of its inverting input v-and negative breakover voltage, controls its second output and export high level.Hysteresis comparator output-stage circuit 120, when its first input end receives high level, controls its output and exports high level, and when its second input receives high level, control its output output low level, make output port vo outputting oscillation signal.By the charging and discharging state of the low and high level state control capacitance C1 of output port vo, thus change the voltage of the in-phase input end v+ of hysteresis comparator input stage circuit 110, the level state of output port vo is changed according to the in-phase input end v+ of hysteresis comparator input stage circuit 110 and the level difference value state of inverting input v-.Hysteresis comparator circuit structure is adopted to realize multivibrator, export oscillator signal, not by the impact of the operating voltage of power supply access interface VDD access, compared with traditional multivibrator, there is frequency stability high, DC power is little, integrated level advantages of higher, and makes multivibrator Induction Peried short thus reduce the available machine time.
The above-mentioned novel hysteresis comparator structure being applied to multivibrator is simple, can realize fully integratedization, and chip occupying area is less, reduces production cost.Because the bleeder circuit be only made up of the first resistance R1 and the second resistance R2 exists Partial DC electric current, and can access according to power access end VDD the resistance that the size of voltage adjusts the first resistance R1 and the second resistance R2 and reduce direct current, greatly reduce direct current stand-by power consumption, add the useful life as power supply units such as mobile batteries.The multivibrator that above-mentioned novel hysteresis comparator is formed can starting of oscillation once powering on, and there is not starting of oscillation problem and Induction Peried, improves starting of oscillation reliability and promptness.
Particularly, wherein in an embodiment, as depicted in figs. 1 and 2, hysteresis comparator input stage circuit 110 comprises the first switching tube NM1, second switch pipe NM2, the 3rd switching tube PM1, the 4th switching tube PM3, the 5th switching tube PM4 and the 6th switching tube PM2.
The control end of the first switching tube NM1 and second switch pipe NM2 is respectively in-phase input end v+ and the inverting input v-of hysteresis comparator input stage circuit 110, the control end of the first switching tube NM1 is for connecting the common port of charging circuit 130 and electric capacity C1, and the control end of second switch pipe NM2 is for connecting the common port of the first resistance R1 and the second resistance R2.The input of the first switching tube NM1 connects the control end of the 3rd switching tube PM1 and the 4th switching tube PM3, and connects the output of the 3rd switching tube PM1 and the 5th switching tube PM4, and the output of the first switching tube NM1 is for connecting the grounding ports GND of multivibrator.The input of second switch pipe NM2 connects the control end of the 5th switching tube PM4 and the 6th switching tube PM2, and connects the output of the 4th switching tube PM3 and the 6th switching tube PM2, and the output of second switch pipe NM2 is for connecting grounding ports GND.
The input of the 3rd switching tube PM1, the 4th switching tube PM3, the 5th switching tube PM4 and the 6th switching tube PM2 is all for being connected the plant-grid connection port VDD of multivibrator.The output of the 5th switching tube PM4, as the first output of hysteresis comparator input stage circuit 110, is connected with the first input end of hysteresis comparator output-stage circuit 120.The output of the 4th switching tube PM3, as the second output of hysteresis comparator input stage circuit 110, is connected with the second input of hysteresis comparator output-stage circuit 120.
In the present embodiment, the first switching tube NM1, second switch pipe NM2, the 3rd switching tube PM1, the 4th switching tube PM3, the 5th switching tube PM4 and the 6th switching tube PM2 form the input stage of hysteresis comparator, wherein the first switching tube NM1 and second switch pipe NM2 is that pseudo-differential input is to pipe, its control end is respectively as the normal phase input end of hysteresis comparator and inverting input, 3rd switching tube PM1 and the 6th switching tube PM2 is load pipe, 4th switching tube PM3 and the 5th switching tube PM4 forms positive feedback loop, thus forms hysteresis comparator.
The principle of hysteresis comparator as shown in Figure 2, suppose to use positive-negative power, and in-phase input end v+ ground connection, namely refer to that power access end VDD connects positive supply, grounding ports GND connects negative supply, is zero and as a reference point the explaining that remain unchanged with the level of in-phase input end v+.When the level of the control end (i.e. inverting input v-) of second switch pipe NM2 is far below zero, first switching tube NM1 conducting, second switch pipe NM2 ends, then the 3rd switching tube PM1 and the 4th switching tube PM3 is by conducting, and the 5th switching tube PM4 and the 6th switching tube PM2 will end.Therefore the second output end vo 2 of hysteresis comparator input stage circuit 110 exports high level.Along with the voltage of inverting input v-constantly increases, second switch pipe NM2 is by conducting gradually, and the 4th switching tube PM3 and the 6th switching tube NM2 will have electric current to flow through.When the voltage of inverting input v-continues to increase, when making the electric current flowing through second switch pipe NM2 be greater than the electric current flowing through the 4th switching tube PM3, the state of comparator will change, most of electric current will be had to flow through second switch pipe NM2 and the 6th switching tube PM2, now the 5th switching tube PM4 conducting, 3rd switching tube PM1, the 4th switching tube PM3 and the first switching tube NM1 end, first output end vo 1 of hysteresis comparator input stage circuit 110 exports high level, and now the voltage of input inversion input v-is positive breakover voltage.Along with input inversion input v-reduces, second switch pipe NM2 will trend towards cut-off, first switching tube NM1 will trend towards conducting, hysteresis comparator input stage circuit 110 arrives certain electric current a bit making the electric current of the first switching tube NM1 equal in the 5th switching tube PM4, and now the voltage of input inversion input v-is negative breakover voltage.
First switching tube NM1, second switch pipe NM2, the 3rd switching tube PM1, the 4th switching tube PM3, the 5th switching tube PM4 and the 6th switching tube PM2 can be specifically triode or metal-oxide-semiconductor.Wherein in an embodiment, the first switching tube NM1 and/or second switch pipe NM2 is N-channel MOS pipe.At least one in 3rd switching tube PM1, the 4th switching tube PM3, the 5th switching tube PM4 and the 6th switching tube PM2 is P channel MOS tube.
Wherein in an embodiment, as shown in Figure 1, hysteresis comparator output-stage circuit 120 comprises the 7th switching tube NM3, the 8th switching tube NM4, the 9th switching tube PM5 and the tenth switching tube PM6.
The control end of the 7th switching tube NM3 connects control end and the input of the 8th switching tube NM4, and the output of the 7th switching tube NM3 is for connecting the grounding ports GND of multivibrator, and input connects the output of the 9th switching tube PM5; The output of the 8th switching tube NM4 is for connecting grounding ports GND, and input connects the output of the tenth switching tube PM6.The control end of the 9th switching tube PM5, as the first input end of hysteresis comparator output-stage circuit 120, is connected with the first output of hysteresis comparator input stage circuit 110, the concrete output connecting the 4th switching tube PM3.The output of the 9th switching tube PM5, as the output of hysteresis comparator output-stage circuit 120, is connected with output port vo, and the input of the 9th switching tube PM5 is for connecting the plant-grid connection port VDD of multivibrator; The input of the tenth switching tube PM6 is for connecting plant-grid connection port VDD, the control end of the tenth switching tube PM6 is as the second input of hysteresis comparator output-stage circuit 120, be connected with the second output of hysteresis comparator input stage circuit 110, the concrete output connecting the 5th switching tube PM4.
In the present embodiment, the 7th switching tube NM3, the 8th switching tube NM4, the 9th switching tube PM5 and the tenth switching tube PM6 form the output stage of hysteresis comparator, 7th switching tube NM3 and the 8th switching tube NM4 is the image load of output stage, and single-endedization realizing hysteresis comparator exports.
7th switching tube NM3, the 8th switching tube NM4, the 9th switching tube PM5 and the tenth switching tube PM6 adopt triode or metal-oxide-semiconductor.Wherein in an embodiment, the 7th switching tube NM3 and/or the 8th switching tube NM4 is N-channel MOS pipe.9th switching tube PM5 and/or the tenth switching tube PM6 is P channel MOS tube.
Adopt the hysteresis comparator circuit structure of internal positive feedback structure to realize multivibrator, can fully integratedization be realized, and less to the susceptibility of operating voltage, frequency stability is high.
Wherein in an embodiment, as shown in Figure 1, the charging circuit 130 of multivibrator comprises charging control switch pipe PM7 and the 3rd resistance R4, and the input of charging control switch pipe PM7, as the input of charging circuit 130, is connected with plant-grid connection port VDD.The control end of charging control switch pipe PM7, as the control end of charging circuit 130, connects output port vo.The output of charging control switch pipe PM7 connects one end of the 3rd resistance R4, and the other end of the 3rd resistance R4, as the output of charging circuit 130, is connected with electric capacity C1.
Further, continue with reference to Fig. 1, the discharge circuit 140 of multivibrator comprises discharge control switch pipe NM5 and the 4th resistance R3, the input of discharge control switch pipe NM5 connects the 4th resistance R3 one end, the 4th resistance R3 other end is as the input of discharge circuit 140, connect the common port of charging circuit 130 and electric capacity C1, the concrete common port connecting the 3rd resistance R4 and electric capacity C1.The control end of discharge control switch pipe NM5, as the control end of discharge circuit 140, connects output port vo.The output of discharge control switch pipe NM5, as the output of discharge circuit 140, connects grounding ports GND.
Charging control switch pipe PM7 and discharge control switch pipe NM5 can be triode or metal-oxide-semiconductor, and in the present embodiment, charging control switch pipe PM7 is P channel MOS tube, and discharge control switch pipe NM5 is N-channel MOS pipe.
Charging control switch pipe PM7 and the 3rd resistance R4 forms the charge circuit of electric capacity C1, discharge control switch pipe NM5 and the 4th resistance R3 forms the discharge loop of electric capacity C1, when charging, charging control switch pipe PM7 conducting, discharge control switch pipe NM5 ends, and the supply voltage that plant-grid connection port VDD accesses is charged to C1 by charging control switch pipe PM7 and the 3rd resistance R4.And upon discharging, charging control switch pipe PM7 ends, discharge control switch pipe NM5 conducting, the voltage on electric capacity C1 is discharged by the 4th resistance R3 and discharge control switch pipe NM5.
The operation principle of the multivibrator that novel hysteresis comparator is formed is specially: suppose that the initial output of output port vo is low level, then discharge control switch pipe NM5 ends, charging control switch pipe PM7 conducting, the supply voltage that plant-grid connection port VDD accesses is charged to electric capacity C1 by charging control switch pipe PM7 and the 3rd resistance R4, when the voltage (i.e. the voltage of in-phase input end v+) on electric capacity C1 is more than or equal to the voltage of inverting input v-and positive breakover voltage sum, output port vo exports high level, then charging control switch pipe PM7 ends, discharge control switch pipe NM5 conducting, electric capacity C1 is discharged by discharge control switch pipe NM5 and the 4th resistance R3, until when the voltage that the voltage of in-phase input end v+ is less than or equal to inverting input v-deducts negative breakover voltage, comparator exports and again reverses, output port vo output low level, then supply voltage charges to electric capacity C1 again, the same with initial condition, so move in circles, output port vo is made to export oscillator signal.
The above-mentioned hysteresis comparator circuit structure being applied to multivibrator is simple, is easier to realize fully integratedization, and does not almost have DC power, substantially increase the useful life of power supply unit.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (7)
1. one kind is applied to the novel hysteresis comparator of multivibrator, it is characterized in that, comprise hysteresis comparator input stage circuit and hysteresis comparator output-stage circuit, described hysteresis comparator input stage circuit comprises in-phase input end, inverting input, the first output and the second output, and described hysteresis comparator output-stage circuit comprises first input end, the second input and output;
The in-phase input end of described hysteresis comparator input stage circuit is for the common port of the charging circuit and electric capacity that connect multivibrator, and the inverting input of described hysteresis comparator input stage circuit is for the common port of the first resistance and the second resistance that connect multivibrator; First output of described hysteresis comparator input stage circuit connects the first input end of described hysteresis comparator output-stage circuit, second output of described hysteresis comparator input stage circuit connects the second input of described hysteresis comparator output-stage circuit, and the output of described hysteresis comparator output-stage circuit is for connecting the output port of described multivibrator;
Described hysteresis comparator input stage circuit is used for when the voltage of its in-phase input end is more than or equal to the voltage of its inverting input and default positive breakover voltage sum, control its first output and export high level, and when the difference of the voltage that the voltage of its in-phase input end is less than or equal to its inverting input with the negative breakover voltage preset, control its second output and export high level; Described hysteresis comparator output-stage circuit is used for when its first input end receives high level, control its output and export high level, and when its second input receives high level, control its output output low level, thus make the output port outputting oscillation signal of described multivibrator.
2. the novel hysteresis comparator being applied to multivibrator according to claim 1, it is characterized in that, described hysteresis comparator input stage circuit comprises the first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube, the 5th switching tube and the 6th switching tube
The control end of described first switching tube and second switch pipe is respectively in-phase input end and the inverting input of described hysteresis comparator input stage circuit, the control end of described first switching tube is for connecting the common port of described charging circuit and electric capacity, and the control end of described second switch pipe is for connecting the common port of described first resistance and the second resistance;
The input of described first switching tube connects the control end of described 3rd switching tube and the 4th switching tube, and connects the output of described 3rd switching tube and the 5th switching tube, and the output of described first switching tube is for connecting the grounding ports of described multivibrator; The input of described second switch pipe connects the control end of described 5th switching tube and the 6th switching tube, and connects the output of described 4th switching tube and the 6th switching tube, and the output of described second switch pipe is for connecting described grounding ports;
The input of described 3rd switching tube, the 4th switching tube, the 5th switching tube and the 6th switching tube is all for being connected the plant-grid connection port of described multivibrator; The output of described 5th switching tube, as the first output of described hysteresis comparator input stage circuit, is connected with the first input end of described hysteresis comparator output-stage circuit; The output of described 4th switching tube, as the second output of described hysteresis comparator input stage circuit, is connected with the second input of described hysteresis comparator output-stage circuit.
3. the novel hysteresis comparator being applied to multivibrator according to claim 2, is characterized in that, described first switching tube and/or second switch pipe are N-channel MOS pipe.
4. the novel hysteresis comparator being applied to multivibrator according to claim 2, is characterized in that, at least one in described 3rd switching tube, the 4th switching tube, the 5th switching tube and the 6th switching tube is P channel MOS tube.
5. the novel hysteresis comparator being applied to multivibrator according to claim 1, is characterized in that, described hysteresis comparator output-stage circuit comprises the 7th switching tube, the 8th switching tube, the 9th switching tube and the tenth switching tube,
The control end of described 7th switching tube connects control end and the input of described 8th switching tube, and the output of described 7th switching tube is for connecting the grounding ports of described multivibrator, and input connects the output of described 9th switching tube; The output of described 8th switching tube is for connecting described grounding ports, and input connects the output of described tenth switching tube;
The control end of described 9th switching tube is as the first input end of described hysteresis comparator output-stage circuit, be connected with the first output of described hysteresis comparator input stage circuit, the output of described 9th switching tube is as the output of described hysteresis comparator output-stage circuit, be connected with described output port, the input of described 9th switching tube is for connecting the plant-grid connection port of described multivibrator; The input of described tenth switching tube is for connecting described plant-grid connection port, and the control end of described tenth switching tube, as the second input of described hysteresis comparator output-stage circuit, is connected with the second output of described hysteresis comparator input stage circuit.
6. the novel hysteresis comparator being applied to multivibrator according to claim 5, is characterized in that, described 7th switching tube and/or the 8th switching tube are N-channel MOS pipe.
7. the novel hysteresis comparator being applied to multivibrator according to claim 5, is characterized in that, described 9th switching tube and/or the tenth switching tube are P channel MOS tube.
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| CN111245370B (en) * | 2020-03-10 | 2024-05-24 | 拓尔微电子股份有限公司 | CMOS bistable oscillator and implementation method thereof |
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| US20130120046A1 (en) * | 2011-11-11 | 2013-05-16 | Atmel Corporation | Analog rail-to-rail comparator with hysteresis |
| CN102790601A (en) * | 2012-08-08 | 2012-11-21 | 电子科技大学 | RC (resistance-capacitance) oscillator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106603047A (en) * | 2016-11-23 | 2017-04-26 | 江苏进睿芯电子科技有限公司 | High-slew-rate and high-gain comparator |
| CN111245370A (en) * | 2020-03-10 | 2020-06-05 | 西安拓尔微电子有限责任公司 | CMOS bistable oscillator and implementation method thereof |
| CN111245370B (en) * | 2020-03-10 | 2024-05-24 | 拓尔微电子股份有限公司 | CMOS bistable oscillator and implementation method thereof |
| TWI821142B (en) * | 2023-04-06 | 2023-11-01 | 智原科技股份有限公司 | Relaxation oscillator |
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