CN201590808U - Level conversion circuit of push-pull amplifier - Google Patents
Level conversion circuit of push-pull amplifier Download PDFInfo
- Publication number
- CN201590808U CN201590808U CN2009203530381U CN200920353038U CN201590808U CN 201590808 U CN201590808 U CN 201590808U CN 2009203530381 U CN2009203530381 U CN 2009203530381U CN 200920353038 U CN200920353038 U CN 200920353038U CN 201590808 U CN201590808 U CN 201590808U
- Authority
- CN
- China
- Prior art keywords
- amplifier
- point
- amplifying unit
- voltage
- control end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
A level conversion circuit of a push-pull amplifier relates to the electronic technology and comprises a first amplifying unit and a second amplifying unit, wherein the first amplifying unit is parallel to the second amplifying unit, and the first amplifying unit and the second amplifying unit both comprise two amplifiers connected in series. An input end of an amplifier (3) is connected with high level while an output end thereof is connected with a Vo1 point, an input end of an amplifier (1) is connected with the Vo1 point while an output end thereof is connected with low level, a control end of the amplifier (3) is connected with a Vi1 point via a capacitor, a control end of the amplifier (1) is connected with the Vi1 point, an input end of the amplifier (4) is connected with high level while an output end thereof is connected with a Vo2 point, an input end of an amplifier (2) is connected with the Vo2 point while an output end thereof is connected with low level, a control end of the amplifier (4) is connected with a Vi2 point via a capacitor, a control end of the amplifier (2) is connected with the Vi2 point, the control end of the amplifier (3) is connected with the Vo2 point via a resistor, and the control end of the amplifier (4) is connected with the Vo1 point via a resistor. The level conversion circuit can increase level conversion rate.
Description
Technical field
The utility model relates to electronic technology.
Background technology
Usually, push-pull amplifier is subjected to the withstand voltage restriction of device, needs a level translator to produce the difference control signal of control switch driver.
The level translator of prior art adopts pull-up structure on the continuous electric flow pattern, and Fig. 1 is a kind of realization of this kind scheme.When this kind scheme realized, pull-up current also can replace with a resistance.On reaching faster, draw the time, then need bigger continuous current.This electric current will continue to exist in downdraw process.
Scheme shown in Figure 2 has solved pull-up structure on the continuous electric flow pattern will continue to exist electric current in downdraw process problem, still, owing to exist positive feedback, circuit to have the problem of deadlock.Even if be provided with suitable circuit parameter, also can there be very big delay in circuit.Promptly this scheme is controlled this electric current by cross-coupled positive feedback, though can reduce power consumption, can cause unwanted delay.
The utility model content
Technical problem to be solved in the utility model is, a kind of level shifting circuit of push-pull amplifier of the speed that can improve level conversion is provided.
The technical scheme that the utility model solve the technical problem employing is, the level shifting circuit of push-pull amplifier, comprise the first parallel amplifying unit and second amplifying unit, first amplifying unit comprises first amplifier and the 3rd amplifier of series connection, second amplifying unit comprises second amplifier and the 4th amplifier of series connection
The 3rd amplifier input terminal connects high level, output termination Vo1 point, and first amplifier input terminal connects the Vo1 point, output termination low level, the control end of the 3rd amplifier connects the Vi1 point by electric capacity, the control termination Vi1 point of first amplifier;
The 4th amplifier input terminal connects high level, output termination Vo2 point, and second amplifier input terminal connects the Vo2 point, output termination low level, the control end of the 4th amplifier connects the Vi2 point by electric capacity, the control termination Vi2 point of second amplifier;
The control end of the 3rd amplifier is connected with the Vo2 point by resistance, and the control end of the 4th amplifier is connected with the Vo1 point by resistance.
Each amplifier all is a metal-oxide-semiconductor.
The amplifier that between first amplifier and the 3rd amplifier, also has two series connection; The control switch that between second amplifier and the 4th amplifier, also has two series connection.
Alleged first amplifier～the 4th amplifier of the utility model is also referred to as amplifier 1～amplifier 4.
The beneficial effects of the utility model are, do not have electric current to flow through when not having conversion of signals, do not have continuous current, can reduce the power consumption of circuit greatly.The level shifting circuit that the utility model proposes can improve the speed of level conversion.The utility model utilizes common technology to implement, and is easy to integrated.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1, the 2nd, the circuit diagram of prior art.
Fig. 3 is the circuit diagram of embodiment 1 of the present utility model.
Fig. 4 is the circuit diagram of embodiment 2 of the present utility model.
Fig. 5 is the oscillogram of the utility model and existing utility model.A is an output waveform of the present utility model, and B is the output waveform of prior art, and C is the input waveform.
Embodiment
The utility model is introduced a brand-new alternating current path simultaneously by changing the cross-coupled positive feedback loop, and the utility model has solved power consumption and latency issue simultaneously.
The level shifting circuit that the utility model proposes has comprised two parallel sign-changing amplifiers.Two parallel sign-changing amplifiers respectively have two inputs, the signal of two input input homophases, but Voltage rails difference.Between two inputs, insert a voltage,, make two inputs only need an input signal such as the fixing electric capacity of both end voltage.Two amplifier cross-couplings.In the cross-couplings loop, insert a resistance, electric capacity is discharged and recharged, make the voltage of electric capacity keep a specific value by inferior resistance.
Embodiment 1: referring to Fig. 3.
The level shifting circuit of the push-pull amplifier of present embodiment comprises the first parallel amplifying unit and second amplifying unit, and first amplifying unit comprises the amplifier 3 of series connection and amplifier 4 and the amplifier 2 that amplifier 1, the second amplifying unit comprises series connection,
The input termination high level of amplifier 3, output termination Vo1 point, the input termination Vo1 point of amplifier 1, output termination low level, the control end of amplifier 3 connects the Vi1 point by electric capacity 9, the control termination Vi1 point of amplifier 1;
The input termination high level of amplifier 4, output termination Vo2 point, the input termination Vo2 point of amplifier 2, output termination low level, the control end of amplifier 4 connects the Vi2 point by electric capacity 10, the control termination Vi2 point of amplifier 2;
The control end of amplifier 3 is connected with the Vo2 point, and the control end of amplifier 4 is connected with the Vo1 point.
Aforementioned each amplifier is all metal-oxide-semiconductor, and specifically, amplifier 3,4 is a P type metal-oxide-semiconductor, and amplifier 1,2 is a N type metal-oxide-semiconductor.
Circuit is made of two parallel reverse amplifying units.First amplifying unit is series between power supply Vboot and the Vss by PMOS pipe 3, PMOS pipe 5, NMOS pipe 7 and NMOS pipe 1 and constitutes.First amplifying unit has two input Vi1 and Vi1p, receives the grid of NMOS pipe 1 and PMOS pipe 3 respectively.The grid of PMOS pipe 5 and NMOS pipe 7 is received bigoted voltage Vb2 and Vb1 respectively.Vb1 is the high terminal voltage of applied signal voltage rail, and Vb2 is the low side of output signal voltage rail.Usually,
Vboot-Vb2＝Vb1-Vss
Electric capacity 9 connects the grid of PMOS pipe 3 and NMOS pipe 1, promptly connects two input Vi1 and Vi1p.The voltage of electric capacity 9 is
Vc＝Vboot-Vb1＝Vb2-Vss
The output end vo 1 of tie point position first sign-changing amplifier of PMOS pipe 3 and PMOS pipe 5.
Equally, second amplifying unit is made of PMOS pipe 4, PMOS pipe 6, NMOS pipe 8 and NMOS pipe 2, and four metal-oxide-semiconductors are series between power supply Vboot and the Vss.Second amplifier has two input Vi2 and Vi2p, receives the grid of NMOS pipe 2 and PMOS pipe 4 respectively.The grid of PMOS pipe 6 and NMOS pipe 8 is received bigoted voltage Vb2 and Vb1 respectively.Electric capacity 10 connects the grid of PMOS pipe 4 and NMOS pipe 2, promptly connects two input Vi2 and Vi2p.The output end vo 2 of tie point position second sign-changing amplifier of PMOS pipe 4 and PMOS pipe 6.
The first and second sign-changing amplifier cross-couplings.For example, the output Vo1 of first amplifier is connected with resistance 11 with the second amplifier input terminal Vi2p, and the output Vo2 of second amplifier is connected with resistance 12 with the first amplifier input terminal Vi1p.
The input Vi1 of the utility model level translator and Vi2 should be synchronous complementation input, and Voltage rails is Vb1 and Vss.Promptly whenever the voltage of Vi1 be Vb1 then the voltage of Vi2 be Vss, the voltage of Vi1 be Vss then the voltage of Vi2 be Vb1.
The output Vo1 of the utility model level translator and Vo2 should be synchronous complementary output, and Voltage rails is Vboot and Vb2.Promptly whenever the voltage of Vo1 be Vboot then the voltage of Vo2 be Vb2, the voltage of Vo1 be Vb2 then the voltage of Vo2 be Vboot.
The voltage Vc=Vboot-Vb1=Vb2-Vss of electric capacity 9.When Vi1 voltage was Vss, the voltage of Vi1p was Vb2.At this moment, NMOS pipe 1 turn-offs, and PMOS manages 3 conductings, and the voltage of output Vo1 is Vboot.At this moment, the voltage of Vo2 is Vb2.When Vi1 voltage was Vb1, the voltage of Vi1p was Vboot.At this moment, NMOS manages 1 conducting, and PMOS pipe 3 turn-offs, and the voltage of output Vo1 is Vb2.At this moment, the voltage of Vo2 is Vboot.When analyzing the Vi2 input, obtain identical result.
The output Vo1 of first amplifier of level translator of the present utility model and the voltage of the second amplifier input terminal Vi2p should equate that the output Vo2 of second amplifier and the voltage of the first amplifier input terminal Vi1p should equate.If voltage is unequal, then circuit charges to electric capacity 10 and 9 respectively by resistance 11 and 12.
In specific implementation as shown in Figure 4, remove metal-oxide-semiconductor 5,6 and 7,8 individually or simultaneously, do not influence function of the present utility model.Simultaneously NMOS pipe of the present utility model and PMOS tubing type are exchanged, Vboot and Vss exchange, and Vb1 and Vb2 exchange, and the utility model is still set up.
The level shifting circuit that the utility model proposes is not limited to be applied to push-pull amplifier, and the occasion that can be widely used in needing the occasion of switch drive and need level conversion.
Claims (3)
1. the level shifting circuit of push-pull amplifier, it is characterized in that, comprise the first parallel amplifying unit and second amplifying unit, first amplifying unit comprises the amplifier (3) and the amplifier (1) of series connection, second amplifying unit comprises the amplifier (4) and the amplifier (2) of series connection
The input termination high level of amplifier (3), output termination Vo1 point, the input termination Vo1 point of amplifier (1), output termination low level, the control end of amplifier (3) connects the Vi1 point by electric capacity (9), the control termination Vi1 point of amplifier (1);
The input termination high level of amplifier (4), output termination Vo2 point, the input termination Vo2 point of amplifier (2), output termination low level, the control end of amplifier (4) connects the Vi2 point by electric capacity (10), the control termination Vi2 point of amplifier (2);
The control end of amplifier (3) is connected with the Vo2 point by resistance (11), and the control end of amplifier (4) is connected with the Vo1 point by resistance (12).
2. the level shifting circuit of push-pull amplifier as claimed in claim 1 is characterized in that, each amplifier all is a metal-oxide-semiconductor.
3. the level shifting circuit of push-pull amplifier as claimed in claim 1 is characterized in that, also has the amplifier of two series connection between amplifier (1) and amplifier (3); The control switch that between amplifier (2) and amplifier (4), also has two series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203530381U CN201590808U (en) | 2009-12-31 | 2009-12-31 | Level conversion circuit of push-pull amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203530381U CN201590808U (en) | 2009-12-31 | 2009-12-31 | Level conversion circuit of push-pull amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590808U true CN201590808U (en) | 2010-09-22 |
Family
ID=42750603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203530381U Expired - Lifetime CN201590808U (en) | 2009-12-31 | 2009-12-31 | Level conversion circuit of push-pull amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590808U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006055A (en) * | 2010-11-16 | 2011-04-06 | 成都成电硅海科技股份有限公司 | Negative level high voltage shift circuit |
| CN102130655A (en) * | 2011-05-03 | 2011-07-20 | 四川和芯微电子股份有限公司 | Intersection moving-down circuit |
| CN109218916A (en) * | 2018-09-12 | 2019-01-15 | 上海悦骑智能科技有限公司 | Loudspeaker driving circuit |
-
2009
- 2009-12-31 CN CN2009203530381U patent/CN201590808U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102006055A (en) * | 2010-11-16 | 2011-04-06 | 成都成电硅海科技股份有限公司 | Negative level high voltage shift circuit |
| CN102130655A (en) * | 2011-05-03 | 2011-07-20 | 四川和芯微电子股份有限公司 | Intersection moving-down circuit |
| CN102130655B (en) * | 2011-05-03 | 2013-10-02 | 四川和芯微电子股份有限公司 | Intersection moving-down circuit |
| CN109218916A (en) * | 2018-09-12 | 2019-01-15 | 上海悦骑智能科技有限公司 | Loudspeaker driving circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101777906B (en) | Level shift circuit of push-pull amplifier | |
| Wen et al. | Subthreshold level shifter with self-controlled current limiter by detecting output error | |
| CN100561870C (en) | Narrow pulse pull-down current type level displacement circuit | |
| CN201590808U (en) | Level conversion circuit of push-pull amplifier | |
| CN102158211A (en) | Current switching circuit for high-speed current rudder digital-to-analog converter | |
| CN101771384B (en) | Non-dead time power amplifier output-stage circuit | |
| CN104283546A (en) | Low-voltage differential signal driver | |
| CN103944571A (en) | High-speed configurable assembly line analog-to-digital converter | |
| CN102394634B (en) | Digital-analog combined control body-bias class-C inverter | |
| CN101369804B (en) | Apparatus and method for eliminating feedback common-mode signal | |
| CN103297036B (en) | Low-power-consumptiocurrent current mode logic circuit | |
| CN108923773A (en) | A kind of low-power consumption adjustable type high linearity phase interpolator | |
| CN108199701A (en) | A kind of cmos transmission gate switching circuit of high speed | |
| CN102664617B (en) | Active pull-down circuit for driving capacitive load | |
| CN103199850B (en) | Output stage driving circuit of low-voltage differential signal transmitter | |
| CN100533980C (en) | LVDS drive circuit for correcting signal swing rate | |
| CN101515800A (en) | Low-jitter conversion circuit from CMOS to CML | |
| CN105162466B (en) | Increase the ADC structures of production line analog-digital converter surplus amplifier settling time | |
| CN105187045B (en) | A kind of dynamic latch of the band pull-up PMOS of high speed circuit | |
| CN101494450A (en) | Level transfer circuit | |
| CN203406848U (en) | Source electrode following circuit with high speed and high precision | |
| CN102025365B (en) | Driver for reducing voltage swing | |
| CN108199700A (en) | A kind of high-precision comparator circuit | |
| CN205353185U (en) | Current foldback circuit | |
| CN204967800U (en) | Absolute monotonic series resistance partial -voltage type digital analog converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100922 Effective date of abandoning: 20091231 |