CN206946351U - A reference source and its integrated circuit - Google Patents
A reference source and its integrated circuit Download PDFInfo
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- CN206946351U CN206946351U CN201720715297.9U CN201720715297U CN206946351U CN 206946351 U CN206946351 U CN 206946351U CN 201720715297 U CN201720715297 U CN 201720715297U CN 206946351 U CN206946351 U CN 206946351U
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Abstract
The utility model discloses a kind of a reference source and its integrated circuit, a reference source includes：Starting-up later time, mirror current source, bias loop and band-gap voltage source；The electric power that starting-up later time receives power supply output provides startup bias current；Mirror current source provides two constant-current bias according to bias current is started；Bias loop includes multiple transistors, and multiple transistors provide two constant bias voltages according to two constant-current bias；Band-gap voltage source exports a reference output voltage according to two constant-current bias and two constant bias voltages.
Description
Technical field
A kind of a reference source is the utility model is related to, specifically, more particularly to a kind of base of ambipolar Width funtion low-power consumption
Quasi- source.
Background technology
A reference source is largely used in power circuit.Divide from type of device：There are ambipolar, MOS type and ambipolar and MOS
Mixed type；Divide from supply voltage：There are operating on low voltage, high-pressure work and Width funtion work；Divide from power consumption：There is low-power consumption
With general power consumption.Existing ambipolar a reference source manufacture craft is simple, high pressure resistant work, can also low-power consumption work, but if
Realize that two constant bias voltages of band-gap voltage source are less susceptible to.Existing a reference source is mostly real using amplifier backfeed loop
It is existing, but this mode make it that circuit structure is complicated.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of a reference source comprising：
Starting-up later time, the electric power for receiving power supply output provide startup bias current；
Mirror current source, two constant-current bias are provided according to the startup bias current；
Bias loop, comprising multiple transistors, the multiple transistor provides two according to two constant-current bias
Individual constant bias voltage；
Band-gap voltage source, it is defeated that a benchmark is exported according to two constant-current bias and described two constant bias voltages
Go out voltage.
Above-mentioned a reference source, wherein, the bias loop includes：The first transistor, second transistor, third transistor,
4th transistor and first resistor；The described 3rd is coupled to after the first transistor and second transistor common base connection
The colelctor electrode of the emitter stage of the colelctor electrode of transistor and the 4th transistor, the first transistor and the second transistor
It is coupled to the mirror current source, the emitter stage of the first transistor and the second transistor is coupled to the band gap voltage
Source, the emitter stage of the third transistor are coupled to the power supply, the current collection of the 4th transistor by the first resistor
Pole is grounded, and the base stage of the 4th transistor is coupled to the band-gap voltage source；Wherein described the first transistor and described second
The colelctor electrode of transistor accordingly receives described two constant-current bias, and the emitter stage of the 4th transistor exports constant electricity
After pressure, the first transistor and the second transistor receive the constant voltage, the first transistor and described second
The emitter stage of transistor exports the constant bias voltage respectively.
Above-mentioned a reference source, wherein, the starting-up later time includes：5th transistor, the 6th transistor, second resistance and
Three resistance；The base stage of 5th transistor is described with being coupled to the power supply by the second resistance after colelctor electrode short circuit
The emitter stage of 5th transistor is grounded by the 3rd resistor, and the base stage of the 6th transistor is coupled to the 5th transistor
Base stage and colelctor electrode, the colelctor electrode of the 6th transistor are coupled to the mirror current source, the emitter stage coupling of the 6th transistor
It is connected to the band-gap voltage source.
Above-mentioned a reference source, wherein, the mirror current source includes：7th transistor, the 8th transistor, the 9th crystal
Pipe, the tenth transistor, the 4th resistance and the 5th resistance；Coupling after 7th transistor and the 8th transistor common base connection
The base stage of the third transistor is connected to, the emitter stage of the 7th transistor is coupled to the electricity by the 4th resistance
Source, the emitter stage of the 8th transistor are coupled to the power supply, the transmitting of the 7th transistor by the 5th resistance
Pole and base stage short circuit, the base stage of the 9th transistor are coupled to the base stage of the tenth transistor, the 9th transistor
Emitter stage is electrically connected in the colelctor electrode of the 7th transistor, and the colelctor electrode of the 9th transistor is electrically connected in first crystalline substance
The colelctor electrode of body pipe, the emitter stage of the tenth transistor are electrically connected in the colelctor electrode of the 8th transistor, and the described tenth is brilliant
The colelctor electrode of body pipe after base stage short circuit with being electrically connected in the colelctor electrode of the second transistor and the collection of the 6th transistor
Electrode.
Above-mentioned a reference source, wherein, the band-gap voltage source includes：11st transistor, the tenth two-transistor, the 6th electricity
Resistance and the 7th resistance；The 4th crystal is coupled to after 11st transistor and the tenth two-transistor common base connection
Reference voltage output end is also drawn after the base stage of pipe, the 11st transistor and the tenth two-transistor common base connection,
The colelctor electrode of 11st transistor is coupled to the emitter stage of the first transistor, the colelctor electrode of the tenth two-transistor
It is coupled to the emitter stage of the second transistor, the tenth two-transistor is coupled to one end of the 6th resistance, and described
The emitter stage of 11 crystal is coupled to the other end of the 6th resistance, one end of the 7th resistance and the 6th transistor
Emitter stage, the 7th resistance the other end ground connection.
Above-mentioned a reference source, wherein, also comprising the first electric capacity, its both ends is respectively coupled to the power supply and second crystalline substance
The colelctor electrode of body pipe.
Above-mentioned a reference source, wherein, also comprising reference current source, it is coupled to the power supply, the bias loop and described
Reference voltage output end, the reference current source provide a reference current
Above-mentioned a reference source, wherein, the reference current source includes：13rd transistor, the 14th transistor, the 8th electricity
Resistance, the 9th resistance and the second electric capacity；The base stage of 13rd transistor is coupled to the colelctor electrode of the first transistor, described
The emitter stage of 13rd transistor is coupled to the reference voltage output end, and one end of the 8th resistance is also coupled in the base
Quasi- voltage output end, the other end ground connection of the 8th resistance, the colelctor electrode of the 13rd transistor are coupled to the described tenth
The base stage and colelctor electrode of four transistors, the emitter stage of the 14th transistor is coupled to one end of the 9th resistance, described
The other end of 9th resistance is coupled to the power supply, and the base stage of the 14th transistor draws reference current output end, described
One end of second electric capacity is coupled to the base stage of the 13rd transistor, the other end ground connection of second electric capacity.
Above-mentioned a reference source, wherein, also comprising output switch control unit, opened or closed according to the control signal of its reception
Close a reference source.
Above-mentioned a reference source, wherein, the output switch control unit includes：15th transistor, the 16th transistor,
Tenth resistance and the 11st resistance；15th transistor couples are brilliant in the base stage of the 5th transistor, the described 15th
The grounded emitter of body pipe, the base stage of the 15th transistor are coupled to one end of the tenth resistance, and the described 16th is brilliant
The colelctor electrode of body pipe is coupled to the base stage of the 13rd transistor, the grounded emitter of the 16th transistor, and described
The base stage of 16 transistors is coupled to one end of the 11st resistance, and the other end of the 11st resistance is coupled to described
The other end of the other end of ten resistance, the tenth resistance and the 11st resistance is receiving the control signal.
Above-mentioned a reference source, wherein, the second resistance is super large resistance.
Above-mentioned a reference source, wherein, the mirror current source is ambipolar mirror current source.
Above-mentioned a reference source, wherein, the current value of described two constant-current bias is identical or different.
Above-mentioned a reference source, wherein, the magnitude of voltage of described two constant bias voltages is identical or different.
The utility model also provides a kind of integrated circuit of a reference source, comprising before in any described a reference source.
A reference source of the present utility model is directed to prior art its effect and is：Can not only output reference voltage can also be defeated
Go out reference current, and line construction is succinct, easy of integrationization, is all realized using bipolar device, and consumption electric current is small, while energy
Enough reach the pressure-resistant of bipolar devices therefore there is very wide supply voltage scope.The utility model utilizes the tenth transistor simultaneously
Emitter stage-base stage substantially constant pressure the characteristics of, realize two constant bias voltages needed for band-gap voltage source, while also full
Foot effectively work at lower voltages.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the utility model a reference source one；
Fig. 2 is the structural representation of another embodiment of the utility model a reference source.
Embodiment
Hereby illustrate about detailed content of the present utility model and technology, be now described further with a preferred embodiment,
But it is not necessarily to be construed as the limitation of the utility model implementation.
Fig. 1 is referred to, Fig. 1 is the structural representation of the embodiment of the utility model a reference source one.As shown in figure 1, a reference source 1
Comprising：Starting-up later time 11, mirror current source 12, bias loop 13 and band-gap voltage source 14；It is defeated that starting-up later time 11 receives power Vcc
The electric power gone out, which provides, starts bias current；Mirror current source 12 provides two constant-current bias according to bias current is started；Partially
Put back into road 13 and provide two constant bias voltages according to two constant-current bias；Band-gap voltage source 14 is according to two constant bias
Electric current and two constant bias voltages export a reference output voltage Vref.Wherein, it is notable that of the present utility model two
The current value of individual constant-current bias is identical or different；The magnitude of voltage of two constant bias voltages is identical or different.
Wherein, bias loop 13 includes：The first transistor Q1, second transistor Q2, third transistor Q3, the 4th transistor
Q4 and first resistor R1；The 3rd crystalline substance is coupled to after the first transistor Q1 and second transistor Q2 common bases connection
The emitter stage of body pipe Q3 colelctor electrode and the 4th transistor Q4, the first transistor Q1 and the second transistor Q2's
Colelctor electrode is coupled to the mirror current source 12, and the first transistor Q1 and the second transistor Q2 emitter stage are coupled to
The band-gap voltage source 14, the emitter stage of the third transistor Q3 are coupled to the power Vcc, institute by the first resistor
The 4th transistor Q4 grounded collector is stated, the base stage of the 4th transistor Q4 is coupled to the band-gap voltage source 14；Wherein
The first transistor Q1 and the second transistor Q2 colelctor electrode accordingly receive described two constant-current bias, described
4th transistor Q4 emitter stage output constant voltage, so, the first transistor Q1 and the second transistor Q2 are received
After the constant voltage, the first transistor Q1 and the second transistor Q2 emitter stage export the constant bias respectively
Voltage.
Starting-up later time 11 includes：5th transistor Q5, the 6th transistor Q6, second resistance R2 and 3rd resistor R3；It is described
5th transistor Q5 base stage by the second resistance R2 after colelctor electrode short circuit with being coupled to the power Vcc, and the described 5th
Transistor Q5 emitter stage is grounded by the 3rd resistor R3, and the 6th transistor Q6 base stage is coupled to the 5th transistor
Q5 base stage and colelctor electrode, the 6th transistor Q6 colelctor electrode are coupled to the mirror current source 12, the 6th transistor Q6
Emitter stage be coupled to the band-gap voltage source 14.In the present embodiment, second resistance R2 only start momentary action, no matter base
Quasi- source output is turned on and off, and second resistance R2 is in consumption electric energy, so second resistance R2 is super large resistance mega-ohms resistance,
To reduce the power consumption of a reference source, but the utility model is not limited thereto.
Mirror current source 12 includes：7th transistor Q7, the 8th transistor Q8, the 9th transistor Q9, the tenth transistor
Q10, the 4th resistance R4 and the 5th resistance R5；Coupled after the 7th transistor Q7 and the 8th transistor Q8 common bases connection
In the base stage of the third transistor Q3, the emitter stage of the 7th transistor Q7 is coupled to described by the 4th resistance R4
Power Vcc, the emitter stage of the 8th transistor Q8 are coupled to the power Vcc by the 5th resistance R5, and the described 7th
Transistor Q7 emitter stage and base stage short circuit, the base stage of the 9th transistor Q9 are coupled to the base of the tenth transistor Q10
Pole, the emitter stage of the 9th transistor Q9 are electrically connected in the colelctor electrode of the 7th transistor Q7, the 9th transistor Q9
Colelctor electrode be electrically connected in the colelctor electrode of the first transistor Q1, the emitter stage of the tenth transistor Q10 is electrically connected in institute
State the 8th transistor Q8 colelctor electrode, the colelctor electrode of the tenth transistor Q10 is with being electrically connected in described the after base stage short circuit
The colelctor electrode of two-transistor Q2 colelctor electrode and the 6th transistor Q6.
Band-gap voltage source 14 includes：11st transistor Q11, the tenth two-transistor Q12, the 6th resistance R6 and the 7th resistance
R7；The 4th transistor Q4 is coupled to after the 11st transistor Q11 and the tenth two-transistor Q12 common bases connection
Base stage, the 11st transistor Q11 and the tenth two-transistor Q12 common bases connection after also draw reference voltage output
Ov is held, the colelctor electrode of the 11st transistor Q11 is coupled to the emitter stage of the first transistor Q1, the 12nd crystal
Pipe Q12 colelctor electrode is coupled to the emitter stage of the second transistor Q2, and the tenth two-transistor Q12 is coupled to the described 6th
Resistance R6 one end, the emitter stage of the 11st crystal are coupled to the other end of the 6th resistance R6, the 7th resistance
R7 one end and the emitter stage of the 6th transistor Q6, the other end ground connection of the 7th resistance R7.
Further, a reference source 1 also includes the first electric capacity C1, and its both ends is respectively coupled to the power Vcc and described
Two-transistor Q2 colelctor electrode, wherein in the present embodiment, the first electric capacity C1 is anti-self-oscillation electric capacity, but the utility model is simultaneously
It is not limited.
The course of work of the utility model a reference source is illustrated below in conjunction with Fig. 1：
When power Vcc is powered, 3rd resistor R3 is flowed through through the 5th transistor Q5 by resistance R2, now the 6th transistor
Q6 colelctor electrodes will have electric current.This electric current forces the 4th resistance R4, the 7th transistor Q7 and the 9th crystalline substance in mirror current source 12
Body pipe Q9 has electric current, and so whole a reference source just works.At this moment the transmitting of the 11st transistor Q11 in band-gap voltage source 14
Pole will close to 700mV, the 6th transistor Q6 base stage and transmitting electrode potential close to etc., the 6th transistor Q6 collector current is
Zero, starting-up later time 11 is stopped.
Mirror current source 12 provides band gap voltage by the second transistor Q2 and the first transistor Q1 of bias loop 13
The constant-current bias of the colelctor electrode of the tenth two-transistor Q12 and the 11st transistor Q11 in source 14.First resistor R1 and
Three transistor Q3 provide second transistor Q2, the first transistor Q1 and the 4th transistor Q4 bias current, the 4th transistor Q4
Provide the constant bias voltage of second transistor Q2 and the first transistor Q1 base stages.
The tenth two-transistor Q12 and the 11st transistor Q11 in band-gap voltage source 14 realize constant voltage and constant
Current offset, it can thus be concluded that：
Vref=Vbe11+ (VT/ R6) × lnN × (R6+2 × R7) formula 1
Ie11=Ie12=(VT/ R6) × lnN formulas 2
Vc11=Vc12 ≈ Vref formulas 3
Output voltage on the basis of Vref in formula, Vbe11 be the 11st transistor Q11 base-emitter pressure difference, VTFor heat
Voltage, N are the 11st transistor Q11 and the tenth two-transistor Q12 area ratio, and Ie11 and Ie12 are respectively the 11st transistor
Q11 and the 11st two-transistor Q12 emitter current, Vc11 and Vc12 are respectively the 11st transistor Q11 and the 12nd brilliant
Body pipe Q12 collector voltage.
Because Vbe2 has negative temperature coefficient, temperature coefficient is about -1.5mV/ DEG C near normal temperature, and its numerical value is about
650mV；VTWith positive temperature coefficient, temperature coefficient is about+0.087mV/ DEG C near normal temperature, and numerical value is about 26mV.By suitable
When choosing above-mentioned N, R6 and R7, when can to obtain reference output voltage Vref be 1.25V, its temperature coefficient is close to zero.Usually said
Reference output voltage Vref has zero temp shift.
Fig. 2 is refer to, Fig. 2 is the structural representation of another embodiment of the utility model a reference source.Startup illustrated in fig. 2
Loop 11, mirror current source 12, bias loop 13 and band-gap voltage source 14 are identical with structure illustrated in fig. 1 just no longer superfluous herein
State, be now described as follows different piece：
A reference source also includes reference current source 15 and output switch control unit 16.
Reference current source 15 is coupled to the power Vcc, the bias loop 13 and the reference voltage output end Vref.
Reference current source 15 includes：13rd transistor Q13, the 14th transistor Q14, the 8th resistance R8, the 9th resistance R9 and second
Electric capacity；The base stage of the 13rd transistor Q13 is coupled to the colelctor electrode of the first transistor Q1, the 13rd transistor
Q13 emitter stage is coupled to the reference voltage output end Ov, and one end of the 8th resistance R8 is also coupled in benchmark electricity
Press output end Ov, the 8th resistance R8 other end ground connection, the colelctor electrode of the 13rd transistor Q13 is coupled to described the
14 transistor Q14 base stage and colelctor electrode, the emitter stage of the 14th transistor Q14 are coupled to the 9th resistance R9's
One end, the other end of the 9th resistance R9 are coupled to the power Vcc, and the base stage of the 14th transistor Q14 draws base
Quasi- current output terminal Iref, the second electric capacity C2 one end are coupled to the base stage of the 13rd transistor Q13, and described second
Electric capacity C2 other end ground connection.
Due to voltage Vref on the basis of the pressure drop on the 8th resistance R8, the 13rd transistor Q13 colelctor electrode, the 14th crystalline substance
The electric current that body pipe Q14 emitter stage and the 9th resistance R9 flows through is constant.The electric current that 9th resistance R9 flows through is exactly the base
Quasi- current source provides a reference current Iref.
Output switch control unit 16 is electrically connected at the starting-up later time 11 and reference current source 15.
Output switch control unit 16 includes：15th transistor Q15, the 16th transistor Q16, the tenth resistance R10 and
11st resistance R11；The 15th transistor Q15 is coupled to the base stage of the 5th transistor Q5, the 15th crystal
Pipe Q15 grounded emitter, the base stage of the 15th transistor Q15 are coupled to one end of the tenth resistance R10, and described
16 transistor Q16 colelctor electrode is coupled to the base stage of the 13rd transistor Q13, the hair of the 16th transistor Q16
Emitter grounding, the base stage of the 16th transistor Q16 are coupled to one end of the 11st resistance R11, the 11st electricity
The resistance R11 other end is coupled to the other end of the tenth resistance R10, the tenth resistance R10 and the 11st resistance R11
The other end receiving the control signal.
15th transistor Q15 is turned on and off starting-up later time by the tenth resistance R10 according to its control signal received,
The 16th transistor Q16 is turned on and off a reference source output by the 11st resistance R11 according to its control signal received simultaneously
Reference voltage V ref and reference current source output reference electric current Iref.It is worth noting that, output switch control unit 16 can be with
Control is turned on and off a reference source output reference voltage Vref and reference current source output reference electric current Iref simultaneously, in other realities
Apply and a reference source output reference voltage Vref and benchmark are turned on and off when output switch control unit 16 can control different in example
Current source output reference electric current Iref.
The utility model additionally provides a kind of integrated circuit, comprising at least one a reference source as shown in Figure 1 or 2.But
The utility model is not limited thereto, and user can need to be designed to the low work(of multichannel according to actual use in other embodiments
Consume a reference source.
Certainly, the utility model can also have other various embodiments, without departing substantially from the utility model spirit and its essence
In the case of, those skilled in the art work as can make various corresponding changes and deformation according to the utility model, but these
Corresponding change and deformation should all belong to the scope of the claims appended by the utility model.
Claims (15)
1. a kind of a reference source, it is characterised in that include：
Starting-up later time, the electric power for receiving power supply output provide startup bias current；
Mirror current source, two constant-current bias are provided according to the startup bias current；
Bias loop, comprising multiple transistors, the multiple transistor provides two perseverances according to two constant-current bias
Determine bias voltage；
Band-gap voltage source, benchmark output electricity is exported according to two constant-current bias and described two constant bias voltages
Pressure.
2. a reference source as claimed in claim 1, it is characterised in that the bias loop includes：The first transistor, the second crystal
Pipe, third transistor, the 4th transistor and first resistor；After the first transistor and second transistor common base connection
It is coupled to the colelctor electrode of the third transistor and the emitter stage of the 4th transistor, the first transistor and described second
The colelctor electrode of transistor is coupled to the mirror current source, the emitter stage coupling of the first transistor and the second transistor
In the band-gap voltage source, the emitter stage of the third transistor is coupled to the power supply by the first resistor, and described
The grounded collector of four transistors, the base stage of the 4th transistor are coupled to the band-gap voltage source；Wherein described first is brilliant
The colelctor electrode of body pipe and the second transistor accordingly receives described two constant-current bias, the hair of the 4th transistor
Emitter-base bandgap grading exports constant voltage, and after the first transistor and the second transistor receive the constant voltage, described first is brilliant
The emitter stage of body pipe and the second transistor exports the constant bias voltage respectively.
3. a reference source as claimed in claim 2, it is characterised in that the starting-up later time includes：5th transistor, the 6th crystal
Pipe, second resistance and 3rd resistor；The base stage of 5th transistor after colelctor electrode short circuit by the second resistance with being coupled
In the power supply, the emitter stage of the 5th transistor is grounded by the 3rd resistor, and the base stage of the 6th transistor is coupled to
The base stage and colelctor electrode of 5th transistor, the colelctor electrode of the 6th transistor are coupled to the mirror current source, and the described 6th
The emitter stage of transistor is coupled to the band-gap voltage source.
4. a reference source as claimed in claim 3, it is characterised in that the mirror current source includes：7th transistor, the 8th crystalline substance
Body pipe, the 9th transistor, the tenth transistor, the 4th resistance and the 5th resistance；7th transistor and the 8th transistor
The base stage of the third transistor is coupled to after common base connection, the emitter stage of the 7th transistor passes through the 4th resistance
It is coupled to the power supply, the emitter stage of the 8th transistor is coupled to the power supply by the 5th resistance, and the described 7th
The emitter stage of transistor and base stage short circuit, the base stage of the 9th transistor is coupled to the base stage of the tenth transistor, described
The emitter stage of 9th transistor is electrically connected in the colelctor electrode of the 7th transistor, and the colelctor electrode of the 9th transistor electrically connects
In the colelctor electrode of the first transistor, the emitter stage of the tenth transistor is electrically connected in the current collection of the 8th transistor
Pole, the colelctor electrode of the tenth transistor and the colelctor electrode and described that the second transistor is electrically connected in after base stage short circuit
The colelctor electrode of six transistors.
5. a reference source as claimed in claim 3, it is characterised in that the band-gap voltage source includes：11st transistor, the tenth
Two-transistor, the 6th resistance and the 7th resistance；Coupling after 11st transistor and the tenth two-transistor common base connection
The base stage of the 4th transistor is connected to, is also drawn after the 11st transistor and the tenth two-transistor common base connection
Reference voltage output end, the colelctor electrode of the 11st transistor are coupled to the emitter stage of the first transistor, and the described tenth
The colelctor electrode of two-transistor is coupled to the emitter stage of the second transistor, and the tenth two-transistor is coupled to the 6th electricity
One end of resistance, the emitter stage of the 11st crystal are coupled to the other end of the 6th resistance, one end of the 7th resistance
And the emitter stage of the 6th transistor, the other end ground connection of the 7th resistance.
6. a reference source as claimed in claim 5, it is characterised in that also comprising the first electric capacity, its both ends is respectively coupled to described
The colelctor electrode of power supply and the second transistor.
7. a reference source as claimed in claim 5, it is characterised in that also comprising reference current source, be coupled to the power supply, described
Bias loop and the reference voltage output end, the reference current source provide a reference current.
8. a reference source as claimed in claim 7, it is characterised in that the reference current source includes：13rd transistor, the tenth
Four transistors, the 8th resistance, the 9th resistance and the second electric capacity；The base stage of 13rd transistor is coupled to the first crystal
The colelctor electrode of pipe, the emitter stage of the 13rd transistor are coupled to the reference voltage output end, and the one of the 8th resistance
End is also coupled to be grounded in the reference voltage output end, the other end of the 8th resistance, the current collection of the 13rd transistor
Pole is coupled to the base stage and colelctor electrode of the 14th transistor, and the emitter stage of the 14th transistor is coupled to the described 9th
One end of resistance, the other end of the 9th resistance are coupled to the power supply, and the base stage of the 14th transistor draws benchmark
Current output terminal, one end of second electric capacity are coupled to the base stage of the 13rd transistor, second electric capacity it is another
End ground connection.
9. a reference source as claimed in claim 8, it is characterised in that also comprising output switch control unit, according to its reception
Control signal is turned on and off a reference source.
10. a reference source as claimed in claim 9, it is characterised in that the output switch control unit includes：15th crystal
Pipe, the 16th transistor, the tenth resistance and the 11st resistance；15th transistor couples are in the base of the 5th transistor
Pole, the grounded emitter of the 15th transistor, the base stage of the 15th transistor are coupled to the one of the tenth resistance
End, the colelctor electrode of the 16th transistor are coupled to the base stage of the 13rd transistor, the hair of the 16th transistor
Emitter grounding, the base stage of the 16th transistor are coupled to one end of the 11st resistance, the 11st resistance it is another
One end is coupled to the other end of the tenth resistance, and the other end of the tenth resistance and the 11st resistance is to receive
State control signal.
11. a reference source as claimed in claim 3, it is characterised in that the second resistance is super large resistance.
12. a reference source as claimed in claim 1, it is characterised in that the mirror current source is ambipolar mirror current source.
13. a reference source as claimed in claim 2, it is characterised in that the current value of described two constant-current bias it is identical or
It is different.
14. a reference source as claimed in claim 2, it is characterised in that the magnitude of voltage of described two constant bias voltages it is identical or
It is different.
15. a kind of integrated circuit of a reference source, include any described a reference source in the claims 1-14.
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| CN201720715297.9U CN206946351U (en) | 2017-06-19 | 2017-06-19 | A reference source and its integrated circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144165A (en) * | 2017-06-19 | 2019-01-04 | 深圳市威益德科技有限公司 | A reference source and its integrated circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109144165A (en) * | 2017-06-19 | 2019-01-04 | 深圳市威益德科技有限公司 | A reference source and its integrated circuit |
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