JP5551626B2 - 演算増幅回路 - Google Patents
演算増幅回路 Download PDFInfo
- Publication number
- JP5551626B2 JP5551626B2 JP2011005699A JP2011005699A JP5551626B2 JP 5551626 B2 JP5551626 B2 JP 5551626B2 JP 2011005699 A JP2011005699 A JP 2011005699A JP 2011005699 A JP2011005699 A JP 2011005699A JP 5551626 B2 JP5551626 B2 JP 5551626B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- common mode
- amplifier circuit
- voltage
- 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 - Fee Related
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45475—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
- H03F3/45183—Long tailed pairs
- H03F3/45192—Folded cascode stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
- H03F3/45632—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit
- H03F3/45636—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by using feedback means
- H03F3/45641—Measuring at the loading circuit of the differential amplifier
- H03F3/4565—Controlling the common source circuit of the differential amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
- H03F3/45928—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit
- H03F3/45932—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection using IC blocks as the active amplifying circuit by using feedback means
- H03F3/45937—Measuring at the loading circuit of the differential amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45082—Indexing scheme relating to differential amplifiers the common mode signal being taken or deducted from the one or more outputs of the differential amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45406—Indexing scheme relating to differential amplifiers the CMCL comprising a common source node of a long tail FET pair as an addition circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45444—Indexing scheme relating to differential amplifiers the CMCL comprising a sample and hold circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45482—Indexing scheme relating to differential amplifiers the CSC comprising offset means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Description
Vbase’ = Vref’ ・・・(1)
Vcm’ = Vbase’ + Verr’= Vref’ + Verr’ ・・・(2)
Vbuf’ = Vref’ + Verr’ ・・・(3)
Vop’ = Vref’ + (Vref’ - Vbuf’)= Vref’ - Verr’ ・・・(4)
Vbase’ = Vref’ - Verr’ ・・・(5)
Vcm’ = Vbase’ + Verr’ = Vref’ - Verr’ + Verr’ = Vref’ ・・・(6)
Claims (3)
- コモンモードフィードバックを有し、コモンモード基準電圧を中心に演算増幅を行う全差動増幅回路と、
前記全差動増幅回路の同相出力電圧を検出するコモンモード検出回路と、
前記コモンモード検出回路の出力のサンプル及びホールドを行うサンプルホールド回路と、
前記サンプルホールド回路の出力とコモンモード参照電圧とのずれ量を検出し、検出したずれ量と前記コモンモード参照電圧とに基づく電圧を出力する演算回路と、
前記コモンモード参照電圧または前記演算回路の出力を選択して、前記コモンモード基準電圧として出力する切替回路と、
を有し、
前記切替回路が前記コモンモード参照電圧を選択して前記コモンモード基準電圧として出力したときの前記全差動増幅回路の同相出力電圧を前記コモンモード検出回路が検出した後、前記サンプルホールド回路が前記コモンモード検出回路の出力のサンプル及びホールドを行い、
前記演算回路が前記ずれ量と前記コモンモード参照電圧とに基づく電圧を出力し、
前記切替回路が前記演算回路の出力を選択して前記コモンモード基準電圧として出力することにより、前記コモンモード基準電圧に補正を加えることを特徴とする演算増幅回路。 - 前記全差動増幅回路が折り返し型の全差動増幅回路で構成されることを特徴とする請求項1に記載の演算増幅回路。
- 前記演算回路が減算回路で構成されることを特徴とする請求項1に記載の演算増幅回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011005699A JP5551626B2 (ja) | 2011-01-14 | 2011-01-14 | 演算増幅回路 |
US13/349,861 US8519793B2 (en) | 2011-01-14 | 2012-01-13 | Operational amplifier circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011005699A JP5551626B2 (ja) | 2011-01-14 | 2011-01-14 | 演算増幅回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012147361A JP2012147361A (ja) | 2012-08-02 |
JP5551626B2 true JP5551626B2 (ja) | 2014-07-16 |
Family
ID=46490321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011005699A Expired - Fee Related JP5551626B2 (ja) | 2011-01-14 | 2011-01-14 | 演算増幅回路 |
Country Status (2)
Country | Link |
---|---|
US (1) | US8519793B2 (ja) |
JP (1) | JP5551626B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150061767A1 (en) * | 2013-08-28 | 2015-03-05 | Texas Instruments Incorporated | Telescopic Amplifier with Improved Common Mode Settling |
US20150212643A1 (en) * | 2014-01-27 | 2015-07-30 | Samsung Electronics Co., Ltd. | Touch sensing controller, touch sensing device and touch sensing system including the same |
EP2963811B1 (en) * | 2014-06-30 | 2018-11-14 | Nxp B.V. | Driver for switched capacitor circuits |
JP6667344B2 (ja) * | 2016-03-30 | 2020-03-18 | ルネサスエレクトロニクス株式会社 | 半導体装置、半導体システム及び半導体装置の制御方法 |
US10054619B2 (en) * | 2017-01-03 | 2018-08-21 | General Electric Company | Systems and methods for voltage sensing |
WO2021058630A1 (en) * | 2019-09-24 | 2021-04-01 | Analog Devices International Unlimited Company | Stabilizing common mode of differential switching output stage |
CN115173817B (zh) * | 2022-09-05 | 2022-12-02 | 深圳市单源半导体有限公司 | 一种差分放大电路、误差放大电路及其修调方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4933644A (en) * | 1988-12-23 | 1990-06-12 | Texas Instruments, Incorporated | Common-mode feedback bias generator for operational amplifiers |
JPH05167363A (ja) * | 1991-12-19 | 1993-07-02 | Fujitsu Ltd | 差動入力・差動出力型オペアンプ |
US6265941B1 (en) * | 1999-11-12 | 2001-07-24 | Agere Systems Guardian Corp. | Balanced differential amplifier having common mode feedback with kick-start |
JP4290721B2 (ja) | 2006-11-15 | 2009-07-08 | シャープ株式会社 | バンドパスフィルタ回路、並びに赤外線信号処理回路 |
-
2011
- 2011-01-14 JP JP2011005699A patent/JP5551626B2/ja not_active Expired - Fee Related
-
2012
- 2012-01-13 US US13/349,861 patent/US8519793B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US8519793B2 (en) | 2013-08-27 |
US20120182071A1 (en) | 2012-07-19 |
JP2012147361A (ja) | 2012-08-02 |
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