CN104935310B - New hysteresis comparator applied to multivibrator - Google Patents
New hysteresis comparator applied to multivibrator Download PDFInfo
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- CN104935310B CN104935310B CN201510299578.6A CN201510299578A CN104935310B CN 104935310 B CN104935310 B CN 104935310B CN 201510299578 A CN201510299578 A CN 201510299578A CN 104935310 B CN104935310 B CN 104935310B
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Abstract
A kind of new hysteresis comparator applied to multivibrator, including hysteresis comparator input stage circuit and hysteresis comparator output-stage circuit.The multivibrator applied further includes first resistor, second resistance, charging circuit, discharge circuit, capacitance, plant-grid connection port, grounding ports and output port.The charging and discharging state of capacitance is controlled by the low and high level state of output port, so as to change the voltage of the in-phase input end of hysteresis comparator input stage circuit, according to the in-phase input end of hysteresis comparator input stage circuit and the level state of the level difference value state change output port of inverting input.Multivibrator is realized using hysteresis comparator circuit structure, export oscillator signal, from the influence of the operating voltage of plant-grid connection port access, frequency stability is improved, circuit structure is simple, is easier to realize fully integrated, integrated level is high, and almost without DC power, raising battery efficiency being capable of fast start-up work.
Description
Technical field
The present invention relates to oscillator technique fields, compare more particularly to a kind of new sluggishness applied to multivibrator
Device.
Background technology
Multivibrator is a kind of self-excited oscillator that can generate rectangular wave, also referred to as square-wave generator.At work, it is electric
The state on road automatically checker between two temporary stable states, thus generates rectangular wave pulse signal, is commonly used for pulse signal
Clock signal in source and sequence circuit.
Traditional multivibrator is mainly cut-in operation voltage, and passing through resistance-capacitance coupling makes two electronic devices alternately lead
Logical and cut-off, so as to which self-excitation generates square wave.The concussion frequency of traditional multivibrator change with the variation of operating voltage compared with
It is big and generate larger tail current, there are DC power it is big the shortcomings that.
The content of the invention
Based on this, it is necessary in view of the above-mentioned problems, provide a kind of DC power it is small be applied to multivibrator it is new
Hysteresis comparator.
A kind of new hysteresis comparator applied to multivibrator, including hysteresis comparator input stage circuit and sluggish ratio
Compared with device output-stage circuit, the hysteresis comparator input stage circuit include in-phase input end, inverting input, the first output terminal and
Second output terminal, the hysteresis comparator output-stage circuit include first input end, the second input terminal and output terminal；
The in-phase input end of the hysteresis comparator input stage circuit is used to connect the charging circuit and electricity of multivibrator
The common port of appearance, the inverting input of the hysteresis comparator input stage circuit be used to connect multivibrator first resistor and
The common port of second resistance；First output terminal of the hysteresis comparator input stage circuit connects the hysteresis comparator output stage
The first input end of circuit, the second output terminal of the hysteresis comparator input stage circuit connect the hysteresis comparator output stage
Second input terminal of circuit, the output terminal of the hysteresis comparator output-stage circuit are used to connect the output of multivibrator
Port；
The hysteresis comparator input stage circuit is used to be greater than or equal to its anti-phase input in the voltage of its in-phase input end
When the sum of the voltage at end and default positive break over voltage, its first output terminal output high level is controlled and in its homophase input
The voltage at end be less than or equal to its inverting input voltage and default negative break over voltage difference when, control its second output terminal
Export high level；The hysteresis comparator output-stage circuit is used to, when its first input end receives high level, control its output
End output high level, and when its second input terminal receives high level, its output terminal is controlled to export low level, so that described
The output port outputting oscillation signal of multivibrator.
The multivibrator that new hysteresis comparator is applied further includes first resistor, second resistance, charging circuit, electric discharge
Circuit, capacitance, plant-grid connection port, grounding ports and output port.First resistor and second resistance series connection, first resistor it is another
One end connection plant-grid connection port, the other end connection grounding ports of second resistance；The input terminal connection power supply of charging circuit connects
Inbound port, output terminal connection capacitance one end, the control terminal connection output port of charging circuit, capacitance other end connection ground terminal
Mouthful；The input terminal connection charging circuit of discharge circuit and the common port of capacitance, the output terminal connection grounding ports of discharge circuit, put
The control terminal connection output port of circuit.Charging circuit is used to charge to capacitance when output port exports low level,
Raise the voltage of the in-phase input end of hysteresis comparator input stage circuit；Discharge circuit is used for when output port exports high level
It discharges capacitance, reduces the voltage of the in-phase input end of hysteresis comparator input stage circuit.
Above application is in the new hysteresis comparator of multivibrator, and hysteresis comparator input stage circuit is in its homophase input
When the voltage at end is greater than or equal to the sum of the voltage of its inverting input and positive break over voltage, control the output of its first output terminal high
Level, and in the difference of the voltage voltage and the negative break over voltage that are less than or equal to its inverting input of its in-phase input end, control
Make its second output terminal output high level.Hysteresis comparator output-stage circuit is when its first input end receives high level, control
Its output terminal exports high level, and when its second input terminal receives high level, its output terminal is controlled to export low level, is made defeated
Exit port outputting oscillation signal.The charging and discharging state of capacitance is controlled by the low and high level state of output port, so as to change late
The voltage of the in-phase input end of stagnant comparator input stage circuit, according to the in-phase input end of hysteresis comparator input stage circuit and instead
The level state of the level difference value state change output port of phase input terminal.Multi-resonant is realized using hysteresis comparator circuit structure
Device is swung, exports oscillator signal, from the influence of the operating voltage of plant-grid connection port access, with traditional multivibrator phase
Than there is the advantages that frequency stability is high, and DC power is small, and integrated level is high, and make multivibrator Induction Peried short so as to subtract
Few available machine time.
Description of the drawings
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.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is from the limitation of following public specific embodiment.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
A kind of new hysteresis comparator applied to multivibrator, as shown in Figure 1, including hysteresis comparator input stage electricity
Road 110 and hysteresis comparator output-stage circuit 120, it is defeated that hysteresis comparator input stage circuit 110 includes in-phase input end v+, reverse phase
Enter to hold v-, the first output terminal and second output terminal, hysteresis comparator output-stage circuit 120 includes first input end, the second input
End and output terminal.
The multivibrator that new hysteresis comparator is applied further includes first resistor R1, second resistance R2, charging circuit
130th, discharge circuit 140, capacitance C1, plant-grid connection port VDD, grounding ports GND and output port vo, 130 He of charging circuit
Discharge circuit 140 includes input, output end and control terminal.First resistor R1 and second resistance R2 series connection, first resistor R1
Other end connection plant-grid connection port VDD, second resistance R2 other end connection grounding ports GND；Charging circuit 130 it is defeated
Enter end connection plant-grid connection port VDD, output terminal connection capacitance C1 one end, the control terminal connection output port of charging circuit 130
Vo, capacitance the C1 other end connection grounding ports GND；The public affairs of the input terminal connection charging circuit 130 and capacitance C1 of discharge circuit 140
End altogether, the output terminal connection grounding ports GND of discharge circuit 140, the control terminal connection output port vo of discharge circuit 140.
The in-phase input end v+ of hysteresis comparator input stage circuit 110 is used to connect the charging circuit 130 of multivibrator
With the common port of capacitance C1, the inverting input of hysteresis comparator input stage circuit 110 is used to connect the first of multivibrator
The common port of resistance R1 and second resistance R2；The first output terminal connection hysteresis comparator of hysteresis comparator input stage circuit 110
The first input end of output-stage circuit 120, the second output terminal connection hysteresis comparator of hysteresis comparator input stage circuit 110 are defeated
Go out the second input terminal of grade circuit 120, the output terminal of hysteresis comparator output-stage circuit 120 is used to connect output port vo.
The first resistor R1 and second resistance R2 of multivibrator divide the power access end VDD voltages accessed,
Reference voltage is provided for the inverting input v- of hysteresis comparator input stage circuit 110.Charging circuit 130 is defeated in output port vo
It charges when going out low level to capacitance C1, the voltage of the in-phase input end v+ of rise hysteresis comparator input stage circuit 110.It puts
Circuit 140 discharges to capacitance C1 when output port vo exports high level, reduces hysteresis comparator input stage circuit 110
In-phase input end v+ voltage.
110 circuit of hysteresis comparator input stage is used to be greater than or equal to its anti-phase input in the voltage of its in-phase input end v+
When holding the sum of the voltage of v- and default positive break over voltage, its first output terminal output high level is controlled and at it with mutually defeated
When entering to hold the difference of the voltage of the voltage of v+ less than or equal to its inverting input v- and default negative break over voltage, control its second
Output terminal exports high level.Hysteresis comparator output-stage circuit 120 is used to, when its first input end receives high level, control it
Output terminal exports high level, and when its second input terminal receives high level, its output terminal is controlled to export low level, so that
The output port vo outputting oscillation signals of multivibrator.
Above application is in the new hysteresis comparator of multivibrator, and hysteresis comparator input stage circuit 110 is in its same phase
When the sum of voltage of the voltage of input terminal v+ more than or equal to its inverting input v- and positive break over voltage, its first output is controlled
End output high level, and in voltage of the voltage of its in-phase input end v+ less than or equal to its inverting input v- and negative turnover electricity
During the difference of pressure, its second output terminal is controlled to export high level.Hysteresis comparator output-stage circuit 120 is received in its first input end
During high level, its output terminal is controlled to export high level, and when its second input terminal receives high level, controls its output terminal defeated
Go out low level, make output port vo outputting oscillation signals.Filling for capacitance C1 is controlled by the low and high level state of output port vo
Discharge condition, it is defeated according to hysteresis comparator so as to change the voltage of the in-phase input end v+ of hysteresis comparator input stage circuit 110
Enter the level shape of the level difference value state change output port vo of the in-phase input end v+ and inverting input v- of grade circuit 110
State.Multivibrator is realized using hysteresis comparator circuit structure, exports oscillator signal, is accessed from plant-grid connection port VDD
Operating voltage influence, compared with traditional multivibrator, have that frequency stability is high, and DC power is small, integrated level is high
The advantages that, and make multivibrator Induction Peried short so as to reduce the available machine time.
Above application is simple in structure in the new hysteresis comparator of multivibrator, it can be achieved that fully integrated, and occupies core
Piece area is smaller, reduces production cost.Since the bleeder circuit being only made of first resistor R1 and second resistance R2 exists
Partial DC electric current, and the size adjustment first resistor R1 and second resistance R2 of voltage can be accessed according to power access end VDD
Resistance value reduces DC current, greatly reduces direct current stand-by power consumption, and add such as mobile battery power supply unit uses the longevity
Life.The multivibrator that above-mentioned new hysteresis comparator is formed once power on can starting of oscillation, there is no starting of oscillation problem and Induction Peried,
Improve starting of oscillation reliability and promptness.
Specifically, in one of the embodiments, as depicted in figs. 1 and 2, hysteresis comparator input stage circuit 110 includes
First switch pipe NM1, second switch pipe NM2, the 3rd switching tube PM1, the 4th switching tube PM3, the 5th switching tube PM4 and the 6th are opened
Close pipe PM2.
The control terminal of first switch pipe NM1 and second switch pipe NM2 are respectively the same of hysteresis comparator input stage circuit 110
The control terminal of phase input terminal v+ and inverting input v-, first switch pipe NM1 are used to connect the public affairs of charging circuit 130 and capacitance C1
End altogether, the control terminal of second switch pipe NM2 are used to connect the common port of first resistor R1 and second resistance R2.First switch pipe
The control terminal of input terminal connection the 3rd switching tube PM1 and the 4th switching tube PM3 of NM1, and connect the 3rd switching tube PM1 and the 5th
The output terminal of switching tube PM4, the output terminal of first switch pipe NM1 are used to connect the grounding ports GND of multivibrator.Second opens
Close the control terminal of input terminal connection the 5th switching tube PM4 and the 6th switching tube PM2 of pipe NM2, and connect the 4th switching tube PM3 and
The output terminal of 6th switching tube PM2, the output terminal of second switch pipe NM2 are used to connect grounding ports GND.
3rd switching tube PM1, the 4th switching tube PM3, the input terminal of the 5th switching tube PM4 and the 6th switching tube PM2 are used
In the plant-grid connection port VDD of connection multivibrator.The output terminal of 5th switching tube PM4 is as hysteresis comparator input stage electricity
First output terminal on road 110, is connected with the first input end of hysteresis comparator output-stage circuit 120.4th switching tube PM3's is defeated
Second output terminal of the outlet as hysteresis comparator input stage circuit 110, it is defeated with the second of hysteresis comparator output-stage circuit 120
Enter end connection.
First switch pipe NM1, second switch pipe NM2, the 3rd switching tube PM1, the 4th switching tube PM3, in the present embodiment
Five switching tube PM4 and the 6th switching tube PM2 form the input stage of hysteresis comparator, wherein first switch pipe NM1 and second switch
Pipe NM2 is inputted for pseudo-differential to pipe, control terminal respectively as hysteresis comparator normal phase input end and inverting input, the 3rd
Switching tube PM1 and the 6th switching tube PM2 is load pipe, and the 4th switching tube PM3 and the 5th switching tube PM4 form positive feedback loop,
So as to form hysteresis comparator.
The principle of hysteresis comparator is as illustrated in fig. 2, it is assumed that using positive-negative power, and in-phase input end v+ is grounded, that is, refers to electricity
Source incoming end VDD connection positive supplies, grounding ports GND connection negative supplies, using the level of in-phase input end v+ as zero and keep not
Become as a reference point to be explained.When the level of the control terminal (i.e. inverting input v-) of second switch pipe NM2 is far below
When zero, first switch pipe NM1 conductings, second switch pipe NM2 cut-offs, then the 3rd switching tube PM1 and the 4th switching tube PM3 will be led
Logical, the 5th switching tube PM4 and the 6th switching tube PM2 will end.Therefore the second output terminal of hysteresis comparator input stage circuit 110
Vo2 exports high level.Constantly increase with the voltage of inverting input v-, second switch pipe NM2 will be gradually turned on, the 4th switch
Pipe PM3 and the 6th switching tube NM2 will have electric current to flow through.When the voltage of inverting input v- continues to increase so that flow through second and open
When closing the electric current of pipe NM2 more than the electric current for flowing through the 4th switching tube PM3, the state of comparator will change, and will have most of electricity
Stream flows through second switch pipe NM2 and the 6th switching tube PM2, and the 5th switching tube PM4 is turned at this time, and the 3rd switching tube PM1, the 4th open
Pipe PM3 and first switch pipe NM1 cut-offs are closed, the first output end vo 1 of hysteresis comparator input stage circuit 110 exports high level,
The voltage of input inversion input terminal v- is positive break over voltage at this time.As input inversion input terminal v- reduces, second switch pipe
NM2 would tend to end, and first switch pipe NM1 would tend to turn on, and hysteresis comparator input stage circuit 110, which reaches certain point, to be made
First switch pipe NM1 electric current be equal to the 5th switching tube PM4 in electric current, at this time the voltage of input inversion input terminal v- be
Negative break over voltage.
First switch pipe NM1, second switch pipe NM2, the 3rd switching tube PM1, the 4th switching tube PM3, the 5th switching tube PM4
Can be specifically triode or metal-oxide-semiconductor with the 6th switching tube PM2.In one of the embodiments, first switch pipe NM1 and/or
Second switch pipe NM2 is N-channel MOS pipe.3rd switching tube PM1, the 4th switching tube PM3, the switches of the 5th switching tube PM4 and the 6th
It is at least one for P-channel metal-oxide-semiconductor in pipe PM2.
In one of the embodiments, as shown in Figure 1, hysteresis comparator output-stage circuit 120 includes the 7th switching tube
NM3, the 8th switching tube NM4, the 9th switching tube PM5 and the tenth switching tube PM6.
The control terminal of 7th switching tube NM3 connects the control terminal and input terminal of the 8th switching tube NM4, the 7th switching tube NM3
Output terminal be used to connect the grounding ports GND of multivibrator, input terminal connects the output terminal of the 9th switching tube PM5；8th
For the output terminal of switching tube NM4 for connecting grounding ports GND, input terminal connects the output terminal of the tenth switching tube PM6.9th switch
First input end of the control terminal of pipe PM5 as hysteresis comparator output-stage circuit 120, with hysteresis comparator input stage circuit
110 the first output terminal connection, the specific output terminal for connecting the 4th switching tube PM3.The output terminal of 9th switching tube PM5 is as slow
The output terminal of stagnant comparator output-stage circuit 120, is connected with output port vo, and the input terminal of the 9th switching tube PM5 is used to connect
The plant-grid connection port VDD of multivibrator；The input terminal of tenth switching tube PM6 is for connecting plant-grid connection port VDD, and the tenth
Second input terminal of the control terminal of switching tube PM6 as hysteresis comparator output-stage circuit 120, with hysteresis comparator input stage electricity
The second output terminal connection on road 110, the specific output terminal for connecting the 5th switching tube PM4.
7th switching tube NM3, the 8th switching tube NM4, the 9th switching tube PM5 and the tenth switching tube PM6 structures in the present embodiment
Into the output stage of hysteresis comparator, the 7th switching tube NM3 and the image load that the 8th switching tube NM4 is output stage are realized sluggish
The single-endedization output of comparator.
7th switching tube NM3, the 8th switching tube NM4, the 9th switching tube PM5 and the tenth switching tube PM6 can be adopted
With triode or metal-oxide-semiconductor.In one of the embodiments, 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 metal-oxide-semiconductor.
Multivibrator is realized using the hysteresis comparator circuit structure of internal positive feedback structure, can be realized fully integrated
Change, and it is smaller to the susceptibility of operating voltage, frequency stability is high.
In one of the embodiments, as shown in Figure 1, the charging circuit 130 of multivibrator includes charging control switch
Input terminal of the input terminal of pipe PM7 and 3rd resistor R4, charging control switch pipe PM7 as charging circuit 130, with plant-grid connection
Port VDD connections.Control terminal of the control terminal of charging control switch pipe PM7 as charging circuit 130, connection output port vo.
One end of the output terminal connection 3rd resistor R4 of charging control switch pipe PM7, the other end of 3rd resistor R4 is as charging circuit
130 output terminal is connected with capacitance C1.
Further, with continued reference to Fig. 1, the discharge circuit 140 of multivibrator includes discharge control switch pipe NM5 and the
The input terminal of four resistance R3, discharge control switch pipe NM5 connect the 4th resistance R3 one end, and the 4th resistance R3 other ends are as electric discharge
The input terminal of circuit 140 connects charging circuit 130 and the common port of capacitance C1, specific to connect 3rd resistor R4 and capacitance C1's
Common port.Control terminal of the control terminal of discharge control switch pipe NM5 as discharge circuit 140, connection output port vo.Electric discharge control
Output terminal of the output terminal of switching tube NM5 processed as discharge circuit 140, connection grounding ports GND.
Charging control switch pipe PM7 and discharge control switch pipe NM5 can be triode or metal-oxide-semiconductor, be filled in the present embodiment
Electric control switch pipe PM7 is P-channel metal-oxide-semiconductor, and discharge control switch pipe NM5 is N-channel MOS pipe.
Charging control switch pipe PM7 and 3rd resistor R4 form the charge circuit of capacitance C1, discharge control switch pipe NM5 and
4th resistance R3 forms the discharge loop of capacitance C1, when charging, charging control switch pipe PM7 conductings, discharge control switch pipe
NM5 ends, and the supply voltage of plant-grid connection port VDD accesses is filled by charging control switch pipe PM7 and 3rd resistor R4 to C1
Electricity.And upon discharging, charging control switch pipe PM7 cut-offs, discharge control switch pipe NM5 is turned on, and the voltage on capacitance C1 passes through
4th resistance R3 and discharge control switch pipe NM5 electric discharges.
The operation principle for the multivibrator that new hysteresis comparator is formed is specially：Assuming that output port vo's is initial defeated
Go out for low level, then discharge control switch pipe NM5 cut-offs, charging control switch pipe PM7 conductings, plant-grid connection port VDD accesses
Supply voltage by charging control switch pipe PM7 and 3rd resistor R4 to capacitance C1 charge, when on capacitance C1 voltage (i.e. together
The voltage of phase input terminal v+) voltage and the sum of positive break over voltage more than or equal to inverting input v- when, output port vo is defeated
Go out high level, then charging control switch pipe PM7 ends, and discharge control switch pipe NM5 conductings, capacitance C1 passes through discharge control switch
Pipe NM5 and the 4th resistance R3 electric discharges, until voltage of the voltage of in-phase input end v+ less than or equal to inverting input v- subtracts
During negative break over voltage, comparator output inverts again, output port vo output low levels, then supply voltage fills again to capacitance C1
Electricity as original state, so moves in circles so that output port vo exports oscillator signal.
Above application is simple in structure in the hysteresis comparator circuit of multivibrator, is easier to realize fully integrated and several
There is no DC power, substantially increase the service life of power supply unit.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of new hysteresis comparator applied to multivibrator, which is characterized in that including hysteresis comparator input stage electricity
Road and hysteresis comparator output-stage circuit, the hysteresis comparator input stage circuit include in-phase input end, inverting input, the
One output terminal and second output terminal, the hysteresis comparator output-stage circuit include first input end, the second input terminal and output
End；
The in-phase input end of the hysteresis comparator input stage circuit is used to connect the charging circuit and capacitance of multivibrator
Common port, the inverting input of the hysteresis comparator input stage circuit are used to connect the first resistor and second of multivibrator
The common port of resistance；First output terminal of the hysteresis comparator input stage circuit connects the hysteresis comparator output-stage circuit
First input end, the second output terminal of the hysteresis comparator input stage circuit connects the hysteresis comparator output-stage circuit
The second input terminal, the output terminal of the hysteresis comparator output-stage circuit is used to connect the output terminal of the multivibrator
Mouthful；
The hysteresis comparator input stage circuit is used to be greater than or equal to its inverting input in the voltage of its in-phase input end
When the sum of voltage and default positive break over voltage, its first output terminal output high level is controlled and in its in-phase input end
When voltage is less than or equal to the difference of voltage and the default negative break over voltage of its inverting input, the output of its second output terminal is controlled
High level；The hysteresis comparator output-stage circuit is used to, when its first input end receives high level, control its output terminal defeated
Go out high level, and when its second input terminal receives high level, its output terminal is controlled to export low level, so that the multi resonant
The output port outputting oscillation signal of oscillator；
The multivibrator that new hysteresis comparator is applied further includes first resistor, second resistance, charging circuit, electric discharge electricity
Road, capacitance, plant-grid connection port, grounding ports and output port；First resistor and second resistance series connection, first resistor it is another
End connection plant-grid connection port, the other end connection grounding ports of second resistance；The input terminal connection plant-grid connection of charging circuit
Port, output terminal connection capacitance one end, the control terminal connection output port of charging circuit, capacitance other end connection grounding ports；
The input terminal connection charging circuit of discharge circuit and the common port of capacitance, the output terminal connection grounding ports of discharge circuit, electric discharge
The control terminal connection output port of circuit；Charging circuit charges to capacitance when output port exports low level, and rise is slow
The voltage of the in-phase input end of stagnant comparator input stage circuit；Discharge circuit carries out capacitance when output port exports high level
Electric discharge reduces the voltage of the in-phase input end of hysteresis comparator input stage circuit；
The hysteresis comparator input stage circuit include first switch pipe, second switch pipe, the 3rd switching tube, the 4th switching tube,
5th switching tube and the 6th switching tube,
The first switch pipe is respectively the same mutually defeated of the hysteresis comparator input stage circuit with the control terminal of second switch pipe
Enter end and inverting input, the control terminal of the first switch pipe is used to connect the common port of the charging circuit and capacitance, institute
The control terminal for stating second switch pipe is used to connect the common port of the first resistor and second resistance；
The input terminal of the first switch pipe connects the control terminal of the 3rd switching tube and the 4th switching tube, and connects described the
The output terminal of three switching tubes and the 5th switching tube, the output terminal of the first switch pipe are used to connect connecing for the multivibrator
Ground port；The input terminal of the second switch pipe connects the control terminal of the 5th switching tube and the 6th switching tube, and connects institute
The output terminal of the 4th switching tube and the 6th switching tube is stated, the output terminal of the second switch pipe is used to connect the grounding ports；
3rd switching tube, the 4th switching tube, the input terminal of the 5th switching tube and the 6th switching tube are used to connect described more
The plant-grid connection port of harmonic oscillator；The output terminal of 5th switching tube as the hysteresis comparator input stage circuit
One output terminal is connected with the first input end of the hysteresis comparator output-stage circuit；The output terminal of 4th switching tube is made
For the second output terminal of the hysteresis comparator input stage circuit, the second input terminal with the hysteresis comparator output-stage circuit
Connection；
The hysteresis comparator output-stage circuit includes the 7th switching tube, the 8th switching tube, the 9th switching tube and the tenth switching tube,
The control terminal of 7th switching tube connects the control terminal and input terminal of the 8th switching tube, the 7th switching tube
Output terminal is used to connect the grounding ports of the multivibrator, and input terminal connects the output terminal of the 9th switching tube；It is described
For the output terminal of 8th switching tube for connecting the grounding ports, input terminal connects the output terminal of the tenth switching tube；
First input end of the control terminal of 9th switching tube as the hysteresis comparator output-stage circuit, with the sluggishness
The first output terminal connection of comparator input stage circuit, the output terminal of the 9th switching tube are exported as the hysteresis comparator
The output terminal of grade circuit, is connected with the output port, and the input terminal of the 9th switching tube is used to connect the multi-harmonic-oscillations
The plant-grid connection port of device；For connecting the plant-grid connection port, the described tenth switchs the input terminal of tenth switching tube
Second input terminal of the control terminal of pipe as the hysteresis comparator output-stage circuit, with the hysteresis comparator input stage circuit
Second output terminal connection.
2. the new hysteresis comparator according to claim 1 applied to multivibrator, which is characterized in that described first
Switching tube and/or second switch pipe are N-channel MOS pipe.
3. the new hysteresis comparator according to claim 1 applied to multivibrator, which is characterized in that the described 3rd
It is at least one for P-channel metal-oxide-semiconductor in switching tube, the 4th switching tube, the 5th switching tube and the 6th switching tube.
4. the new hysteresis comparator according to claim 1 applied to multivibrator, which is characterized in that the described 7th
Switching tube and/or the 8th switching tube are N-channel MOS pipe.
5. the new hysteresis comparator according to claim 1 applied to multivibrator, which is characterized in that the described 9th
Switching tube and/or the tenth switching tube are P-channel metal-oxide-semiconductor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510299578.6A CN104935310B (en) | 2015-06-03 | 2015-06-03 | New hysteresis comparator applied to multivibrator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510299578.6A CN104935310B (en) | 2015-06-03 | 2015-06-03 | New hysteresis comparator applied to multivibrator |
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| Publication Number | Publication Date |
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| CN104935310A CN104935310A (en) | 2015-09-23 |
| CN104935310B true CN104935310B (en) | 2018-05-18 |
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| CN201510299578.6A Active CN104935310B (en) | 2015-06-03 | 2015-06-03 | New hysteresis comparator applied to multivibrator |
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| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102545849A (en) * | 2010-12-09 | 2012-07-04 | 上海华虹集成电路有限责任公司 | Self-adaptive input hysteresis comparator |
| CN102790601A (en) * | 2012-08-08 | 2012-11-21 | 电子科技大学 | RC (resistance-capacitance) oscillator |
| CN103066951A (en) * | 2011-10-21 | 2013-04-24 | 上海华虹Nec电子有限公司 | Oscillator structure capable of generating high-stability frequency in full condition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545849A (en) * | 2010-12-09 | 2012-07-04 | 上海华虹集成电路有限责任公司 | Self-adaptive input hysteresis comparator |
| CN103066951A (en) * | 2011-10-21 | 2013-04-24 | 上海华虹Nec电子有限公司 | Oscillator structure capable of generating high-stability frequency in full condition |
| CN102790601A (en) * | 2012-08-08 | 2012-11-21 | 电子科技大学 | RC (resistance-capacitance) oscillator |
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