CN106569538A - Adjustable multi-output reference source circuit - Google Patents
Adjustable multi-output reference source circuit Download PDFInfo
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- CN106569538A CN106569538A CN201610998912.1A CN201610998912A CN106569538A CN 106569538 A CN106569538 A CN 106569538A CN 201610998912 A CN201610998912 A CN 201610998912A CN 106569538 A CN106569538 A CN 106569538A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/563—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices including two stages of regulation at least one of which is output level responsive, e.g. coarse and fine regulation
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Abstract
The invention relates to an adjustable multi-output reference source circuit. In one embodiment of the invention, the adjustable multi-output reference source circuit comprises a start circuit, a current source circuit, a bias circuit and a reference circuit. The start circuit is used for providing activating signals for starting the start the current source circuit and the bias circuit when the circuit is working; the current source circuit is used for providing reference current for the bias circuit and the reference circuit; the bias circuit is used for providing bias current for the reference circuit; the adjustable reference circuit controlled by the multipath switch can output multipath reference voltage. The reference voltage output by the reference source circuit is adjustable in size and has many paths and broad application scope.
Description
Technical field
The present invention relates to a kind of reference circuit, more particularly, to a kind of adjustable multiple-channel output reference source circuit.
Background technology
Reference circuit due to the stability having had, to operating environments such as voltage source, operating temperature and output loadings
The features such as changing insensitive, becomes and electricity substantially indispensable in precise voltage and current reference is provided in Analogous Integrated Electronic Circuits
Road unit.But the size of traditional reference circuit output voltage values or current value is single, unadjustable, has had a strong impact on benchmark
Application of the circuit in each circuit, also the remote-effects development of integrated circuit industry.
The content of the invention
For the problem that background technology is present, the invention provides a kind of adjustable multiple-channel output reference source circuit.
To reach above-mentioned purpose, the technical scheme is that：
A kind of adjustable multiple-channel output reference source circuit, it is characterised in that include：Start-up circuit, current source circuit, biasing
Four parts of circuit and reference circuit.Start-up circuit provides enabling signal starting current source circuit and biased electrical when circuit works
Road；Current source circuit is that biasing circuit and reference circuit provide reference current；Circuit provides bias current on the basis of biasing circuit；
The adjustable reference circuit of variable connector control can be with output multi-channel reference voltage.Wherein, start-up circuit respectively with current source circuit
It is connected with biasing circuit；Current source circuit is connected respectively with start-up circuit, biasing circuit and reference circuit；Biasing circuit respectively with
Start-up circuit, current source circuit are connected with reference circuit；Reference circuit is connected respectively with current source circuit and with biasing circuit.
In above-mentioned a kind of adjustable multiple-channel output reference source circuit, the start-up circuit include p-type metal-oxide-semiconductor PM1 and
PM2, N-type metal-oxide-semiconductor NM1-NM6, phase inverter INV1 and resistance R1.Wherein, the source electrode of PM1 is connected with power vd D, grid with start
Enable signal EN to be connected, drain electrode is connected with resistance R1；The source electrode of PM2 is connected with VDD, the output end phase of grid and phase inverter INV1
Even, drain and be connected with output enabling signal BP1；The drain electrode of NM1 is connected with one end of R1, and grid is connected with signal EN is enabled, source
End is connected to the ground；The drain and gate of NM2 is connected with one end of R1, and source is connected to the ground；The drain electrode of NM3 and output enabling signal
BP1 is connected, and grid is connected with the grid of NM2, and source electrode is connected to the ground；The drain electrode of NM4 is connected with the grid of NM2, grid with output
Enabling signal BP2 is connected, and source electrode is connected to the ground；The drain electrode of NM5 is connected with the grid of NM4, and grid is connected with signal EN is enabled, source
Pole is connected to the ground；The input of phase inverter INV1 is connected with signal EN is enabled, and output end is connected with the grid of PM2.
In above-mentioned a kind of adjustable multiple-channel output reference source circuit, the current source circuit include p-type metal-oxide-semiconductor PM3 and
PM4, N-type metal-oxide-semiconductor NM6 and NM7 and resistance R2-R4.The source electrode of wherein PM3 and PM4 all meets power vd D, and grid is all believed with starting
Number BP1 is connected, and drain electrode is connected respectively with BP1 and BP2；The drain electrode of NM6 is connected with BP1, and grid is connected with BP2, and source electrode is with R2's
One end is connected；The drain and gate of NM7 is all connected with BP2, and source electrode is connected with one end of R4；One end of resistance R2 and the source of NM6
Extremely it is connected, the other end is connected with R3；One end of R3 is connected with R2, other end ground connection；The source electrode of the one termination NM7 of R4, the other end
Ground connection.
In above-mentioned a kind of adjustable multiple-channel output reference source circuit, the biasing circuit include p-type metal-oxide-semiconductor PM5 and
PM6, N-type metal-oxide-semiconductor NM8 and NM9.Wherein, the source electrode of PM5 is connected with power vd D, and grid is connected with BP1, the leakage drained with NM8
Extremely it is connected；The source electrode of PM6 is connected with VDD, and grid and drain electrode are connected with output signal BP3；The drain and gate of NM8 all with PM5
Drain electrode be connected, source electrode is connected to the ground；The drain electrode of NM9 is connected with output signal BP3, and grid is connected with the grid of NM8, source electrode with
Ground is connected.
In above-mentioned a kind of adjustable multiple-channel output reference source circuit, the reference circuit includes p-type metal-oxide-semiconductor PM7-
PM12, N-type metal-oxide-semiconductor NM10 and NM11, bipolar transistor BJ1 and BJ2, resistance R5-R20, switch K1-K4 and difference amplifier
AMP.Wherein, the source electrode of PM7 is connected with VDD, and grid and drain electrode are all connected with the colelctor electrode of BJ1；The source electrode of PM8 is connected with VDD,
Grid is connected with the grid of PM7, and drain electrode is connected with the colelctor electrode of BJ2；The source electrode of PM9 is connected with VDD, grid and drain electrode all with
BP3 is connected；The source electrode of PM10 is connected with VDD, and grid is connected with BP3, and drain electrode is connected with one end of R13；The source electrode and VDD of PM11
It is connected, grid is connected with BP1, drain electrode is connected with the grid of PM12；The source electrode of PM12 is connected with one end of R13, grid and PM11
Drain electrode be connected, drain electrode be connected with the drain electrode of NM11；The drain electrode of NM10 is connected with the grid of PM12, the base stage phase of grid and BJ2
Even, source electrode is connected to the ground；The drain electrode of NM11 is connected with the drain electrode of PM12, and grid is connected with the output end of AMP, source ground；BJ1
Colelctor electrode be connected with the drain electrode of PM7, base stage is connected with one end of R19, and emitter stage is connected with one end of R5；The colelctor electrode of BJ2
It is connected with the drain electrode of PM8, base stage is connected with one end of R19, emitter stage is connected with one end of R6；R5-R8 joins end to end successively, R5
Another termination BJ1 emitter stage, R8 the other end ground connection；R9-R13 joins end to end successively, the other end ground connection of R9, R13's
Another termination R20；R14-R18 joins end to end successively, another termination R20 of R14, the other end ground connection of R18；The two ends of R19 point
Do not connect the base stage of BJ1 and BJ2；The one termination R13 of R20, another termination output end VO1；The two ends difference connecting resistance of switch K1-K4
The two ends of R8, R11, R12 and R13；The positive input of AMP terminates the grid of PM7, and negative input terminates the drain electrode of PM8, output termination
The grid of NM11；In addition, output end VO2-VO4 is connected on respectively in R14 and R15, R15 and R16, R16 and R17 and R17 and R18
Between.
Description of the drawings
Fig. 1 show a kind of functional block diagram of adjustable multiple-channel output reference source circuit.
Fig. 2 show a kind of start-up circuit figure of adjustable multiple-channel output reference source circuit.
Fig. 3 show a kind of current source circuit figure of adjustable multiple-channel output reference source circuit.
Fig. 4 show a kind of biasing circuit figure of adjustable multiple-channel output reference source circuit.
Fig. 5 show a kind of reference circuit figure of adjustable multiple-channel output reference source circuit.
Fig. 6 show a kind of whole synthesis figure of adjustable multiple-channel output reference source circuit.
Specific embodiment
For the purpose of explanation patent of the present invention that becomes more apparent, technical scheme and advantage, below in conjunction with the accompanying drawings with
Embodiment is further detailed to the present invention.
The functional block diagram of the present invention gives starting current source as shown in figure 1, being included in and providing enabling signal when circuit works
The start-up circuit of circuit and biasing circuit, the current source circuit that reference current is provided for biasing circuit and reference circuit, on the basis of
Circuit provides the adjustable of the biasing circuit and variable connector control of bias current can be with the benchmark of output multi-channel reference voltage electricity
Road.Wherein, start-up circuit is connected respectively with current source circuit and biasing circuit；Current source circuit respectively with start-up circuit, biasing
Circuit is connected with reference circuit；Biasing circuit is connected respectively with start-up circuit, current source circuit and reference circuit；Reference circuit point
It is not connected with current source circuit and with biasing circuit.
Fig. 2 show a kind of start-up circuit figure of adjustable multiple-channel output reference source circuit.The start-up circuit includes p-type
Metal-oxide-semiconductor PM1 and PM2, N-type metal-oxide-semiconductor NM1-NM6, phase inverter INV1 and resistance R1.Wherein, the source electrode of PM1 is connected with power vd D,
Grid is connected with enable signal EN is started, and drain electrode is connected with resistance R1；The source electrode of PM2 is connected with VDD, grid and phase inverter INV1
Output end be connected, drain electrode with export enabling signal BP1 be connected；The drain electrode of NM1 is connected with one end of R1, grid with enable signal
EN is connected, and source is connected to the ground；The drain and gate of NM2 is connected with one end of R1, and source is connected to the ground；The drain electrode of NM3 with it is defeated
Go out enabling signal BP1 to be connected, grid is connected with the grid of NM2, and source electrode is connected to the ground；The drain electrode of NM4 is connected with the grid of NM2,
Grid is connected with output enabling signal BP2, and source electrode is connected to the ground；The drain electrode of NM5 is connected with the grid of NM4, and grid is believed with enabling
Number EN is connected, and source electrode is connected to the ground；The input of phase inverter INV1 is connected with signal EN is enabled, the grid phase of output end and PM2
Even.
Fig. 3 show a kind of current source circuit figure of adjustable multiple-channel output reference source circuit.The current source circuit bag
Include p-type metal-oxide-semiconductor PM3 and PM4, N-type metal-oxide-semiconductor NM6 and NM7 and resistance R2-R4.The source electrode of wherein PM3 and PM4 all meets power vd D,
Grid is all connected with enabling signal BP1, and drain electrode is connected respectively with BP1 and BP2；The drain electrode of NM6 is connected with BP1, grid and BP2 phases
Even, source electrode is connected with one end of R2；The drain and gate of NM7 is all connected with BP2, and source electrode is connected with one end of R4；Resistance R2's
One end is connected with the source electrode of NM6, and the other end is connected with R3；One end of R3 is connected with R2, other end ground connection；The one termination NM7 of R4
Source electrode, the other end ground connection.
Fig. 4 show a kind of biasing circuit figure of adjustable multiple-channel output reference source circuit.The biasing circuit includes p-type
Metal-oxide-semiconductor PM5 and PM6, N-type metal-oxide-semiconductor NM8 and NM9.Wherein, the source electrode of PM5 is connected with power vd D, and grid is connected with BP1, drain electrode
It is connected with the drain electrode of NM8；The source electrode of PM6 is connected with VDD, and grid and drain electrode are connected with output signal BP3；The drain electrode of NM8 and grid
Pole is all connected with the drain electrode of PM5, and source electrode is connected to the ground；The drain electrode of NM9 is connected with output signal BP3, the grid phase of grid and NM8
Even, source electrode is connected to the ground.
Fig. 5 show a kind of reference circuit figure of adjustable multiple-channel output reference source circuit.The reference circuit includes p-type
Metal-oxide-semiconductor PM7-PM12, N-type metal-oxide-semiconductor NM10 and NM11, bipolar transistor BJ1 and BJ2, resistance R5-R20, switch K1-K4 and
Difference amplifier AMP.Wherein, the source electrode of PM7 is connected with VDD, and grid and drain electrode are all connected with the colelctor electrode of BJ1；The source electrode of PM8
It is connected with VDD, grid is connected with the grid of PM7, drain electrode is connected with the colelctor electrode of BJ2；The source electrode of PM9 is connected with VDD, grid and
Drain electrode is all connected with BP3；The source electrode of PM10 is connected with VDD, and grid is connected with BP3, and drain electrode is connected with one end of R13；PM11's
Source electrode is connected with VDD, and grid is connected with BP1, and drain electrode is connected with the grid of PM12；The source electrode of PM12 with
One end of R13 is connected, and grid is connected with the drain electrode of PM11, and drain electrode is connected with the drain electrode of NM11；The drain electrode of NM10 with
The grid of PM12 is connected, and grid is connected with the base stage of BJ2, and source electrode is connected to the ground；The drain electrode of NM11 is connected with the drain electrode of PM12, grid
Pole is connected with the output end of AMP, source ground；The colelctor electrode of BJ1 is connected with the drain electrode of PM7, and base stage is connected with one end of R19,
Emitter stage is connected with one end of R5；The colelctor electrode of BJ2 is connected with the drain electrode of PM8, and base stage is connected with one end of R19, emitter stage with
One end of R6 is connected；R5-R8 joins end to end successively, the emitter stage of another termination BJ1 of R5, the other end ground connection of R8；R9-R13
Join end to end successively, the other end ground connection of R9, another termination R20 of R13；R14-R18 joins end to end successively, the other end of R14
Connect R20, the other end ground connection of R18；The two ends of R19 connect respectively the base stage of BJ1 and BJ2；The one termination R13 of R20, another termination is defeated
Go out to hold VO1；Distinguish the two ends of connecting resistance R8, R11, R12 and R13 in the two ends of switch K1-K4；The positive input of AMP terminates the grid of PM7
Pole, negative input terminates the drain electrode of PM8, the grid of output termination NM11；In addition, output end VO2-VO4 be connected on respectively R14 and R15,
The centre of R15 and R16, R16 and R17 and R17 and R18.
Reference circuit operation principle is specifically described below：
When circuit will work, enable signal is low level, then have from VDD through PM1, and the electric current of R1, NM2, NM3 to ground leads to
Road, NM3 provides enabling signal BP1 to current source circuit and biasing circuit, and current source circuit starts normal work.Enabling signal
BP2 gradually rises, and the grid potential of NM4 is raised hence into conducting state, and NM3 enters cut-off state, and current path is changed to Jing
PM1 is crossed, R1, NM2, NM4 to ground, the start-up course of circuit is completed, now reference circuit normal work.May then pass through control
The on off state of switch K1-K4, adjusts the size of output voltage.And acted on by the partial pressure of resistance, VO1-VO5 can be obtained
Five tunnel voltage outputs.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications to described specific embodiment or supplement or replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (5)
1. a kind of adjustable multiple-channel output reference source circuit, it is characterised in that include：Start-up circuit, current source circuit, biased electrical
Four parts in road and reference circuit.Start-up circuit provides enabling signal starting current source circuit and biased electrical when circuit works
Road；Current source circuit is that biasing circuit and reference circuit provide reference current；Circuit provides bias current on the basis of biasing circuit；
The adjustable reference circuit of variable connector control can be with output multi-channel reference voltage.Wherein, start-up circuit respectively with current source circuit
It is connected with biasing circuit；Current source circuit is connected respectively with start-up circuit, biasing circuit and reference circuit；Biasing circuit respectively with
Start-up circuit, current source circuit are connected with reference circuit；Reference circuit is connected respectively with current source circuit and with biasing circuit.
2. a kind of adjustable multiple-channel output reference source circuit according to claim 1, it is characterised in that the start-up circuit
Including p-type metal-oxide-semiconductor PM1 and PM2, N-type metal-oxide-semiconductor NM1-NM6, phase inverter INV1 and resistance R1.Wherein, the source electrode and power supply of PM1
VDD is connected, and grid is connected with enable signal EN is started, and drain electrode is connected with resistance R1；The source electrode of PM2 is connected with VDD, grid with it is anti-
The output end of phase device INV1 is connected, and drains and is connected with output enabling signal BP1；The drain electrode of NM1 is connected with one end of R1, grid with
Enable signal EN to be connected, source is connected to the ground；The drain and gate of NM2 is connected with one end of R1, and source is connected to the ground；NM3's
Drain electrode is connected with output enabling signal BP1, and grid is connected with the grid of NM2, and source electrode is connected to the ground；The drain electrode of NM4 and the grid of NM2
Extremely it is connected, grid is connected with output enabling signal BP2, and source electrode is connected to the ground；The drain electrode of NM5 is connected with the grid of NM4, grid with
Enable signal EN to be connected, source electrode is connected to the ground；The input of phase inverter INV1 is connected with signal EN is enabled, and output end is with PM2's
Grid is connected.
3. a kind of adjustable multiple-channel output reference source circuit according to claim 1, it is characterised in that the current source electricity
Road includes p-type metal-oxide-semiconductor PM3 and PM4, N-type metal-oxide-semiconductor NM6 and NM7, resistance R2-R4.The source electrode of wherein PM3 and PM4 all connects power supply
VDD, grid is all connected with enabling signal BP1, and drain electrode is connected respectively with BP1 and BP2；The drain electrode of NM6 is connected with BP1, grid with
BP2 is connected, and source electrode is connected with one end of R2；The drain and gate of NM7 is all connected with BP2, and source electrode is connected with one end of R4；Resistance
One end of R2 is connected with the source electrode of NM6, and the other end is connected with R3；One end of R3 is connected with R2, other end ground connection；One termination of R4
The source electrode of NM7, other end ground connection.
4. a kind of adjustable multiple-channel output reference source circuit according to claim 1, it is characterised in that the biasing circuit
Including p-type metal-oxide-semiconductor PM5 and PM6, N-type metal-oxide-semiconductor NM8 and NM9.Wherein, the source electrode of PM5 is connected with power vd D, grid and BP1 phases
Even, drain electrode is connected with the drain electrode of NM8；The source electrode of PM6 is connected with VDD, and grid and drain electrode are connected with output signal BP3；The leakage of NM8
Pole and grid are all connected with the drain electrode of PM5, and source electrode is connected to the ground；The drain electrode of NM9 is connected with output signal BP3, and grid is with NM8's
Grid is connected, and source electrode is connected to the ground.
5. a kind of adjustable multiple-channel output reference source circuit according to claim 1, it is characterised in that the reference circuit
Including p-type metal-oxide-semiconductor PM7-PM12, N-type metal-oxide-semiconductor NM10 and NM11, bipolar transistor BJ1 and BJ2, resistance R5-R20, switch
K1-K4 and difference amplifier AMP.Wherein, the source electrode of PM7 is connected with VDD, and grid and drain electrode are all connected with the colelctor electrode of BJ1；
The source electrode of PM8 is connected with VDD, and grid is connected with the grid of PM7, and drain electrode is connected with the colelctor electrode of BJ2；The source electrode of PM9 and VDD phases
Even, grid and drain electrode is all connected with BP3；The source electrode of PM10 is connected with VDD, and grid is connected with BP3, one end phase drained with R13
Even；The source electrode of PM11 is connected with VDD, and grid is connected with BP1, and drain electrode is connected with the grid of PM12；The source electrode of PM12 and the one of R13
End is connected, and grid is connected with the drain electrode of PM11, and drain electrode is connected with the drain electrode of NM11；The drain electrode of NM10 is connected with the grid of PM12,
Grid is connected with the base stage of BJ2, and source electrode is connected to the ground；The drain electrode of NM11 is connected with the drain electrode of PM12, the output end of grid and AMP
It is connected, source ground；The colelctor electrode of BJ1 is connected with the drain electrode of PM7, and base stage is connected with one end of R19, one end of emitter stage and R5
It is connected；The colelctor electrode of BJ2 is connected with the drain electrode of PM8, and base stage is connected with one end of R19, and emitter stage is connected with one end of R6；R5-
R8 joins end to end successively, the emitter stage of another termination BJ1 of R5, the other end ground connection of R8；R9-R13 joins end to end successively, R9's
The other end is grounded, another termination R20 of R13；R14-R18 joins end to end successively, another termination R20 of R14, the other end of R18
Ground connection；The two ends of R19 connect respectively the base stage of BJ1 and BJ2；The one termination R13 of R20, another termination output end VO1；Switch K1-K4
Two ends distinguish connecting resistance R8, R11, R12 and R13 two ends；The positive input of AMP terminates the grid of PM7, negative input termination PM8
Drain electrode, output termination NM11 grid；In addition, output end VO2-VO4 be connected on respectively R14 and R15, R15 and R16, R16 and
The centre of R17 and R17 and R18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998912.1A CN106569538A (en) | 2016-11-07 | 2016-11-07 | Adjustable multi-output reference source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998912.1A CN106569538A (en) | 2016-11-07 | 2016-11-07 | Adjustable multi-output reference source circuit |
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| CN106569538A true CN106569538A (en) | 2017-04-19 |
Family
ID=58542021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610998912.1A Pending CN106569538A (en) | 2016-11-07 | 2016-11-07 | Adjustable multi-output reference source circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967022A (en) * | 2018-01-19 | 2018-04-27 | 桂林电子科技大学 | A kind of dual output Low Drift Temperature reference voltage source |
| CN107992159A (en) * | 2018-01-19 | 2018-05-04 | 桂林电子科技大学 | One kind three exports Low Drift Temperature Low-power-consumptioreference reference voltage source |
| CN111542797A (en) * | 2017-12-18 | 2020-08-14 | 苹果公司 | Double-loop self-adaptive LDO (low dropout regulator) |
-
2016
- 2016-11-07 CN CN201610998912.1A patent/CN106569538A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542797A (en) * | 2017-12-18 | 2020-08-14 | 苹果公司 | Double-loop self-adaptive LDO (low dropout regulator) |
| CN107967022A (en) * | 2018-01-19 | 2018-04-27 | 桂林电子科技大学 | A kind of dual output Low Drift Temperature reference voltage source |
| CN107992159A (en) * | 2018-01-19 | 2018-05-04 | 桂林电子科技大学 | One kind three exports Low Drift Temperature Low-power-consumptioreference reference voltage source |
| CN107967022B (en) * | 2018-01-19 | 2023-11-03 | 桂林电子科技大学 | Dual-output low-temperature drift reference voltage source |
| CN107992159B (en) * | 2018-01-19 | 2023-11-03 | 桂林电子科技大学 | Three-output low-temperature drift low-power consumption reference voltage source |
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Application publication date: 20170419 |
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