CN101388650A - Nested type Miller active capacitor frequency compensation circuit - Google Patents
Nested type Miller active capacitor frequency compensation circuit Download PDFInfo
- Publication number
- CN101388650A CN101388650A CNA2008102011772A CN200810201177A CN101388650A CN 101388650 A CN101388650 A CN 101388650A CN A2008102011772 A CNA2008102011772 A CN A2008102011772A CN 200810201177 A CN200810201177 A CN 200810201177A CN 101388650 A CN101388650 A CN 101388650A
- Authority
- CN
- China
- Prior art keywords
- amplifier
- current buffer
- frequency
- output
- frequency compensation
- 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.)
- Pending
Links
Images
Landscapes
- Amplifiers (AREA)
Abstract
The invention relates to a nested Miller active capacitance frequency compensating circuit, which is used in a three-level operation amplifier, which is composed of three CMOS amplifier stage circuits, two compensating capacitors, one positive phase current buffer and one reversed phase current buffer which are connected through nestings, wherein a three-level amplifier which is built can be expanded to high frequency on a non-main pole in frequency response characteristics, simultaneously, a zero point of a left half-plane is also introduced, which increases the phase margin and saves the power consumption. Compared with an existing three-level amplifier frequency compensation technique, the frequency compensation technique in the invention realizes high gain and has the advantages of low power consumption, small compensation capacitance, big driving, strong load capacity and the like.
Description
Technical field
The invention belongs to technical field of integrated circuits, be specifically related to a kind of nested type Miller active capacitor frequency compensation circuit that is used for three-stage operational amplifier.
Background technology
Now, along with the development of integrated circuit technology, the characteristic size of metal-oxide-semiconductor is more and more littler and supply voltage is also more and more lower.In this case, it is no longer suitable to explain in words the cascade technology of system for amplifier.Obtaining high-gain just must the one-stage amplifier of cascade more than three grades or three grades.Have at output under the situation of heavy load electric capacity, develop and both to save area (building-out capacitor is little), consume the three-stage operational amplifier frequency compensation technology of extremely low power dissipation (bias current is little) again, this is people's a research focus [1-3] always.
In general, two big quefrency compensation methodes are arranged, be respectively nested type Miller capacitance compensation (NMC) [4-8] and anti-nested type Miller capacitance compensation (RNMC) [9], both structures as depicted in figs. 1 and 2.Wherein, mutual conductance and capacitive feedback frequency compensation (TCFC) [8] are arranged more typically in the NMC technology, it has been incorporated into an active capacitor in the middle of traditional NMC structure, thereby is able to produce in frequency response raising at the zero point phase margin of a RHP; Anti-active feedback frequency compensation (RAFFC) [9] are more typically arranged in the RNMC technology, and it has been incorporated into an active capacitor in the middle of traditional RNMC structure, is able to produce in frequency response the zero point of a RHP equally.In the middle of the design based on NMC and RNMC, they have all obtained best separately bandwidth power consumption ratio and slew rate power consumption ratio.
Yet all there is certain problem in this two classes circuit.RNMC is that with respect to the advantage of NMC structure it has only a building-out capacitor to load on output.But generally the third level of third stage amplifier always needs the bigger promptly bigger bias current of mutual conductance than preceding two-stage.RNMC has adopted the third level that positive amplifies, and the positive amplification needs the two-way current branch, as shown in Figure 3.This just means that it needs the branch of the bigger electric current of two-way, and this has consumed a lot of power consumptions.On the other hand, be one road current branch (as shown in Figure 4) though the NMC structure only needs the third level of an anti-phase amplification,, its two building-out capacitors all load on the output.Therefore, develop and only to consume half third level electric current of RNMC structure, only have a building-out capacitor to load on the circuit of output again simultaneously, have certain realistic meaning, meet the technical development trend.
List of references
[1]Leung?K?N,Mok?P?K?T.Nested?Miller?compensation?in?low-power?CMOS?design.IEEETrans.Circuits?Syst.II,Analog.Digit.Signal?Process.2001,48(4),388
[2]Leung?K?N,Mok?P?K?T.Analysis?of?multistage?amplifier-frequency?compensation.IEEETrans.Circuits?Syst.I,Fundam.Theory?Appl.,2001,48(9):1041
[3]Leung?K?N,Mok?P?K?T,Ki?W?H,et?al.Three-stage?large?capacitive?load?amplifier?withdamping-factor-control?frequency?compensation.IEEE?J.Solid-State?Circuits,2000,35(2):221
[4]Lee?H,Mok?P?K?T.Active-feedback?frequency-compensation?technique?for?low-powermultistage?amplifiers.IEEE?J.Solid-State?Circuits,2003,38(3):511
[5]Lee?H,Mok?P?K?T.Advances?in?active-feedback?frequency?compensation?with?poweroptimization?and?transient?improvement.IEEE?Trans.Circuits?Syst.I,2004,51(9):1690
[6]Lee?H,Leung?K?N,Mok?P?K?T.A?dual-path?bandwidth?extension?amplifier?topology?withdual-loop?parallel?compensation.IEEE?J.Solid-State?Circuits,2003,38(10):1739
[7]Peng?X,Sansen?W.AC?boosting?compensation?scheme?for?low-power?multistage?amplifiers.IEEE?J.Solid-State?Circuits,2004,39(11):2074
[8]Peng?X,Sansen?W.Transconductance?with?capacitances?feed-back?compensation?formultistage?amplifiers.IEEE?J.Solid-State?Circuits,2005,40(7):1515
[9]Grasso?A?D,Palumbo?G,Pennisi?S.Advances?in?reversed?nested?Miller?compensation.IEEE?Trans.Circuits?Syst.I,2007,54(7):1459
[10]Fan?X,Mishra?C,Sanchez-Sinencio?E.Single?Miller?capacitor?frequency?compensationtechnique?for?low-power?multistage?amplifiers.IEEE?J.Solid-State?Circuits,2003,38(10):1735
[11]Rincon-Mora?G?A.Active?capacitor?multiplier?in?miller-compensated?circuits.IEEE?J.Solid-State?Circuits,2000,35(1):26
Summary of the invention
The objective of the invention is to propose a kind of nested type Miller active capacitor frequency compensation circuit that is used for three-stage operational amplifier, overcoming existing shortcoming based on NMC and RNMC technology, thereby realize better bandwidth power consumption than and slew rate power consumption ratio.
To achieve these goals, technology contents of the present invention is: a kind of nested type Miller active capacitor frequency compensation circuit, it is by third stage amplifier (1,2,3), building-out capacitor (4,5), based on the current buffer (6) of positive amplifier, based on current buffer (7) formation of inverting amplifier; Described third stage amplifier (1,2,3) is connected successively, to realize the amplification of signal; The output concurrent of the output of described positive current buffer (6) and negative-phase sequence curent buffer (7) also is connected to the output of amplifier (1); Described building-out capacitor (4) is connected between the input of the output of amplifier (3) and positive current buffer (6), thereby realizes active miller compensation; Described building-out capacitor (5) be connected the output of amplifier (2) and positive current buffer (7) thus input between realize the active miller compensation of nested type.Between the output of the output of amplifier (1) and amplifier (3), be provided with a feedforward transconductance level amplifier gmf, to improve large signal characteristic.
The constructed third stage amplifier non-dominant pole in frequency response characteristic that goes out of nested type Miller active capacitor frequency compensation circuit of the present invention can expand to very high frequency, simultaneously, also introduced the zero point of a left half-plane, this has increased phase margin and has saved power consumption.Therefore the present invention has advantages such as low in energy consumption, that building-out capacitor is little, driving heavy load ability is strong when realizing high-gain.
Description of drawings
Fig. 1 is the structural representation of typical NMC frequency compensation technology;
Fig. 2 is the structural representation of typical R NMC frequency compensation technology;
Fig. 3 is a positive amplifier architecture schematic diagram;
Fig. 4 is the inverting amplifier structural representation;
Fig. 5 is typical current buffer structural representation based on inverting amplifier;
Fig. 6 is based on the current buffer structural representation of positive amplifier;
Fig. 7 is based on the transistor level of the current buffer of positive amplifier and realizes electrical schematic diagram;
Fig. 8 is the structural representation of nested type Miller active capacitor frequency compensation circuit of the present invention;
Fig. 9 is that the transistor level of nested type Miller active capacitor frequency compensation circuit of the present invention is realized schematic diagram.
Label declaration: 1, the progression of the amplifier of 2,3 expression block diagram forms, 4,5,11,12 is building-out capacitor, 6 is the current buffer of positive, 7 is anti-phase current buffer, 8,9,10 be respectively 1,2,3 transistor level and realize, 13 is that the transistor level of the current buffer of positive is realized, 14 be the transistor level realization of anti-phase current buffer.
Concrete implementing measure
Further describe nested type Miller active capacitor frequency compensation circuit of the present invention below in conjunction with accompanying drawing.
Current buffer (Fig. 5) is used to improve performance, for example third stage amplifier [4-6,8,9] and the linear pressurizer of low pressure reduction [11] in a lot of occasions.But generally, an anti-phase amplifier needs.In fact, when the amplifier of a positive existed, we also can construct current buffer, this building method as shown in Figure 6, Fig. 7 is that its transistor level is realized schematic diagram.
Based on the structure of above current buffer, the block diagram of the nested Miller active capacitor compensating circuit of third stage amplifier of the present invention as shown in Figure 8, three amplifiers 1,2,3 are together in series successively, can obtain high-gain thereby constitute three amplifying stages like this.When realizing third stage amplifier frequency compensated, building-out capacitor 4,5 is connected to the output of first order amplifier by the current buffer 6 of positive, anti-phase current buffer 7 respectively, has constituted the nested type Miller active capacitor compensation that the present invention proposes like this.C
P1,2Represent parasitic capacitance at different levels, C
LThen represent load capacitance.In addition, added a feedforward transconductance level amplifier g
MfTo improve large signal characteristic.Suppose gain at different levels much larger than 1, simultaneously C
A,C
B,C
P1And C
P2Much smaller than C
L,The transfer function of system is,
Wherein
k
a=g
maR
a (7)
k
b=g
mbR
b (8)
Being implemented among Fig. 9 of transistor level of the present invention provides, and two nested Miller active capacitors are by M
B1,2, M
1A, BAnd C
a, C
bRealize; Wherein, the first order 8 is for adopting the amplifying stage of collapsible cascade, and the second level 9 is the positive amplifying stage, and the third level 10 is anti-phase amplifying stage; The transistor level of current buffer realizes that 13,14 is the biasing circuit of the first order, can utilize them to realize positive and anti-phase current buffer simultaneously.Building-out capacitor 11,12 is by current buffer 13,14 nesting formula Miller active capacitor compensating circuits.
The third stage amplifier circuit that constructs like this among the present invention non-dominant pole in frequency response characteristic can expand to very high frequency, shown in (4), (5).Simultaneously, also introduced the zero point of a left half-plane, as the formula (1), this has increased phase margin and has saved power consumption.This class circuit has advantages such as low in energy consumption, that building-out capacitor is little, driving heavy load ability is strong in the realization high-gain, have fabulous application prospect.
Claims (2)
1. nested type Miller active capacitor frequency compensation circuit is characterized in that: it is by third stage amplifier (1,2,3), and building-out capacitor (4,5) based on the current buffer (6) of positive amplifier, constitutes based on the current buffer (7) of inverting amplifier; Described third stage amplifier (1,2,3) is connected successively; The output concurrent of the output of described positive current buffer (6) and negative-phase sequence curent buffer (7) also is connected to the output of amplifier (1); Building-out capacitor (4) is connected between the input of the output of amplifier (3) and positive current buffer (6); Building-out capacitor (5) is connected between the input of the output of amplifier (2) and positive current buffer (7).
2. nested type Miller active capacitor frequency compensation circuit as claimed in claim 1 is characterized in that: be provided with a feedforward transconductance level amplifier g between the output of the output of amplifier (1) and amplifier (3)
Mf
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2008102011772A CN101388650A (en) | 2008-10-14 | 2008-10-14 | Nested type Miller active capacitor frequency compensation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2008102011772A CN101388650A (en) | 2008-10-14 | 2008-10-14 | Nested type Miller active capacitor frequency compensation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN101388650A true CN101388650A (en) | 2009-03-18 |
Family
ID=40477874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNA2008102011772A Pending CN101388650A (en) | 2008-10-14 | 2008-10-14 | Nested type Miller active capacitor frequency compensation circuit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101388650A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101917169A (en) * | 2010-08-05 | 2010-12-15 | 复旦大学 | High-bandwidth low-power consumption frequency-compensation three-stage operational amplifier |
CN101986236A (en) * | 2010-10-27 | 2011-03-16 | 华为技术有限公司 | Frequency compensation circuit for voltage regulator |
CN101677230B (en) * | 2008-09-15 | 2012-07-04 | 联发科技(新加坡)私人有限公司 | Three-stage frequency-compensated operational amplifier |
CN101534094B (en) * | 2009-04-14 | 2013-11-06 | 无锡中星微电子有限公司 | Compensating circuit |
CN103780213A (en) * | 2013-12-24 | 2014-05-07 | 南京中科微电子有限公司 | Multistage operational amplifier |
CN104391533A (en) * | 2014-11-12 | 2015-03-04 | 记忆科技(深圳)有限公司 | High-PSRR (power supply rejection ratio) LDO (low dropout regulator) circuit |
CN104393846A (en) * | 2014-11-17 | 2015-03-04 | 上海华虹宏力半导体制造有限公司 | Operational amplifier |
CN104601123A (en) * | 2014-12-24 | 2015-05-06 | 天津大学 | Low-power consumption three-level operational amplifier for driving large-load capacitor |
CN104949664A (en) * | 2015-06-11 | 2015-09-30 | 工业和信息化部电子第五研究所 | Micromechanical gyroscope electric coupling suppression circuit and method |
CN105406826A (en) * | 2015-08-06 | 2016-03-16 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Three-stage operational amplifier suitable for wide capacitive load range |
CN105932971A (en) * | 2016-04-14 | 2016-09-07 | 中国电子科技集团公司第二十四研究所 | Three-level operation amplifier driving wide-range capacitive loads |
CN105978496A (en) * | 2015-10-28 | 2016-09-28 | 温州墨熵微电子有限公司 | Frequency compensation technology for optimizing conversion speeds of operational amplifiers |
CN107085138A (en) * | 2017-04-25 | 2017-08-22 | 电子科技大学 | A kind of high-resolution negative level detects circuit |
US9893689B2 (en) | 2016-06-24 | 2018-02-13 | Stmicroelectronics S.R.L. | System and method for a multistage operational amplifier |
CN112213535A (en) * | 2020-10-29 | 2021-01-12 | 国网河北省电力有限公司 | Signal source |
-
2008
- 2008-10-14 CN CNA2008102011772A patent/CN101388650A/en active Pending
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101677230B (en) * | 2008-09-15 | 2012-07-04 | 联发科技(新加坡)私人有限公司 | Three-stage frequency-compensated operational amplifier |
CN101534094B (en) * | 2009-04-14 | 2013-11-06 | 无锡中星微电子有限公司 | Compensating circuit |
CN101917169B (en) * | 2010-08-05 | 2013-02-27 | 复旦大学 | High-bandwidth low-power consumption frequency-compensation three-stage operational amplifier |
CN101917169A (en) * | 2010-08-05 | 2010-12-15 | 复旦大学 | High-bandwidth low-power consumption frequency-compensation three-stage operational amplifier |
CN101986236A (en) * | 2010-10-27 | 2011-03-16 | 华为技术有限公司 | Frequency compensation circuit for voltage regulator |
US8847678B2 (en) | 2010-10-27 | 2014-09-30 | Huawei Technologies Co., Ltd. | Frequency compensation circuit for voltage regulator |
CN103780213B (en) * | 2013-12-24 | 2017-02-01 | 南京中科微电子有限公司 | Multistage operational amplifier |
CN103780213A (en) * | 2013-12-24 | 2014-05-07 | 南京中科微电子有限公司 | Multistage operational amplifier |
CN104391533A (en) * | 2014-11-12 | 2015-03-04 | 记忆科技(深圳)有限公司 | High-PSRR (power supply rejection ratio) LDO (low dropout regulator) circuit |
CN104393846A (en) * | 2014-11-17 | 2015-03-04 | 上海华虹宏力半导体制造有限公司 | Operational amplifier |
CN104393846B (en) * | 2014-11-17 | 2018-02-06 | 上海华虹宏力半导体制造有限公司 | Operational amplifier |
CN104601123A (en) * | 2014-12-24 | 2015-05-06 | 天津大学 | Low-power consumption three-level operational amplifier for driving large-load capacitor |
CN104949664A (en) * | 2015-06-11 | 2015-09-30 | 工业和信息化部电子第五研究所 | Micromechanical gyroscope electric coupling suppression circuit and method |
CN105406826A (en) * | 2015-08-06 | 2016-03-16 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Three-stage operational amplifier suitable for wide capacitive load range |
CN105978496A (en) * | 2015-10-28 | 2016-09-28 | 温州墨熵微电子有限公司 | Frequency compensation technology for optimizing conversion speeds of operational amplifiers |
CN105932971A (en) * | 2016-04-14 | 2016-09-07 | 中国电子科技集团公司第二十四研究所 | Three-level operation amplifier driving wide-range capacitive loads |
CN105932971B (en) * | 2016-04-14 | 2019-02-22 | 中国电子科技集团公司第二十四研究所 | A kind of three-stage operational amplifier driving wide scope capacitive load |
US9893689B2 (en) | 2016-06-24 | 2018-02-13 | Stmicroelectronics S.R.L. | System and method for a multistage operational amplifier |
CN107085138A (en) * | 2017-04-25 | 2017-08-22 | 电子科技大学 | A kind of high-resolution negative level detects circuit |
CN107085138B (en) * | 2017-04-25 | 2019-05-21 | 电子科技大学 | A kind of high-resolution negative level detection circuit |
CN112213535A (en) * | 2020-10-29 | 2021-01-12 | 国网河北省电力有限公司 | Signal source |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101388650A (en) | Nested type Miller active capacitor frequency compensation circuit | |
Grasso et al. | Advances in reversed nested Miller compensation | |
CN101373956B (en) | Method for compensating common mode feedback circuit frequency of two-stage amplifier | |
CN101917169B (en) | High-bandwidth low-power consumption frequency-compensation three-stage operational amplifier | |
CN103219961B (en) | Bandwidth-adjustable operational amplifier circuit | |
CN103780213A (en) | Multistage operational amplifier | |
CN101662264B (en) | Switch-type operational amplifier with low power consumption and large oscillation range | |
CN101443996B (en) | Circuit and method for driving bulk capacitance of amplifier input transistors | |
CN104079246A (en) | Low power consumption high slew rate high gain bandwidth product fully differential operational amplifier | |
CN102566634A (en) | Linear voltage stabilizing circuit | |
US9007130B2 (en) | Systems and methods for boosting a received AC signal using a power amplifier including phase conditioners | |
CN102158180A (en) | Switch-type operation amplifier with low power consumption | |
CN101826847A (en) | High-efficiency single to differential amplifier | |
CN103199807A (en) | Split compensation two-stage operational amplifier based on inverter input structure | |
CN103414441A (en) | Open loop amplifier with stable output common-mode voltage | |
CN105406826A (en) | Three-stage operational amplifier suitable for wide capacitive load range | |
Dong et al. | A three-stage OTA with hybrid active miller enhanced compensation technique for large to heavy load applications | |
CN101098123B (en) | Low-voltage and low-power dissipation pseudo-two stage Class-AB OTA structure | |
CN206164477U (en) | Current reuse type high frequency amplifier circuit | |
CN104506151A (en) | An operational amplifier for medical electronics | |
CN102904552A (en) | Differential to single-ended convertor | |
Zhang et al. | A high-slew rate rail-to-rail operational amplifier by flipped voltage followers | |
Mann et al. | Novel high speed low power comparators imbibing Self-cascode preamplifier technique | |
Sarbishaei et al. | A high-gain high-speed low-power class AB operational amplifier | |
Li et al. | A high gain, 808 MHz GBW four-stage OTA in 65 nm CMOS |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20090318 |
|
C20 | Patent right or utility model deemed to be abandoned or is abandoned |