JP5273807B2 - 差動増幅器回路 - Google Patents
差動増幅器回路 Download PDFInfo
- Publication number
- JP5273807B2 JP5273807B2 JP2009178218A JP2009178218A JP5273807B2 JP 5273807 B2 JP5273807 B2 JP 5273807B2 JP 2009178218 A JP2009178218 A JP 2009178218A JP 2009178218 A JP2009178218 A JP 2009178218A JP 5273807 B2 JP5273807 B2 JP 5273807B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- nmos transistor
- differential amplifier
- nmos
- amplifier circuit
- 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.)
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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
- H03F3/45179—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
- H03F3/4521—Complementary long tailed pairs having parallel inputs and being supplied in parallel
- H03F3/45219—Folded cascode stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
- H03F3/3001—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor with field-effect transistors
- H03F3/3022—CMOS common source output SEPP amplifiers
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
-
- 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
- H03F2203/45631—Indexing scheme relating to differential amplifiers the LC comprising one or more capacitors, e.g. coupling capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Description
差動増幅器回路においては、入力段のMOSトランジスタの相互コンダクタンスが大きいほど差動増幅器回路のオフセットが小さくなり、従って、液晶表示パネルドライバ全体としても振幅差偏差が小さくなる。例えば、図7Aに図示されている差動増幅器回路では、
差動増幅器回路のオフセット電圧VOSは下記の式で表される。
2:NMOSトランジスタ対
3:PMOSトランジスタ対
4、5、5A、5B:カレントミラー
6:浮遊電流源
7:電源線
8:接地線
9:正転入力端子
10:反転入力端子
11:出力端子
12、13、14、15:定電圧源
21:P型基板
22:Pウェル
23、25:N−領域
24:ソース領域
26:ドレイン領域
27:ゲート絶縁膜
28:ゲート電極
MN1、MN2、MN3、MN4、MN5、MN6、MN7、MN8、MN9:NMOSトランジスタ
MP1、MP2、MP3、MP4、MP5、MP6、MP7、MP8:PMOSトランジスタ
IS1、IS2、IS3、IS4:定電流源
C1、C2:位相補償キャパシタ
101、101A、101B:差動増幅器回路
102、102A:NMOSトランジスタ対
103:PMOSトランジスタ対
104、105、105A:カレントミラー
106:浮遊電流源
107:電源線
108:接地線
109:正転入力端子
110:反転入力端子
111:出力端子
112、114、115:定電圧源
MN101、MN102:NMOSトランジスタ
A1:出力アンプ
Claims (1)
- 正転入力端子及び反転入力端子に接続されたNMOSトランジスタ対と、
前記正転入力端子及び前記反転入力端子に接続されたPMOSトランジスタ対と、
出力回路部
とを備え、
前記PMOSトランジスタ対は、第1及び第2PMOSトランジスタで構成され、
前記NMOSトランジスタ対は、Pウェルを形成せずにチャンネル領域がP型基板中に形成されたディプレッション型のNMOSトランジスタである第1及び第2ノンドープ型NMOSトランジスタで構成され、
前記出力回路部は、前記第1及び第2ノンドープ型NMOSトランジスタに接続されたフォールディッドカスコード型の第1カレントミラーを含み、前記第1カレントミラーから出力される電流に応答して出力電圧を生成し、
前記出力回路部は、更に、
前記第1及び第2PMOSトランジスタに接続された第2カレントミラーと、
前記第1カレントミラーと前記第2カレントミラーとの間に接続された浮遊電流源と、
前記出力電圧を出力する出力端子にドレインが接続され、前記浮遊電流源の一端にゲートが接続されたPMOSトランジスタである第1出力トランジスタと、
前記出力端子にドレインが接続され、前記浮遊電流源の他端にゲートが接続されたNMOSトランジスタである第2出力トランジスタ
とを備え、
前記浮遊電流源を構成するNMOSトランジスタとして、Pウェルを形成せずにチャンネル領域がP型基板中に形成されたディプレッション型のNMOSトランジスタであるノンドープ型NMOSトランジスタが用いられる
差動増幅器回路。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009178218A JP5273807B2 (ja) | 2009-07-30 | 2009-07-30 | 差動増幅器回路 |
US12/822,832 US8542222B2 (en) | 2009-07-30 | 2010-06-24 | Differential amplifier circuit, data line driver using the same, and liquid crystal display apparatus |
CN2010102213413A CN101989841A (zh) | 2009-07-30 | 2010-06-30 | 差分放大器电路、使用其的数据线驱动器及液晶显示设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009178218A JP5273807B2 (ja) | 2009-07-30 | 2009-07-30 | 差動増幅器回路 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011035559A JP2011035559A (ja) | 2011-02-17 |
JP2011035559A5 JP2011035559A5 (ja) | 2012-04-05 |
JP5273807B2 true JP5273807B2 (ja) | 2013-08-28 |
Family
ID=43526542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009178218A Active JP5273807B2 (ja) | 2009-07-30 | 2009-07-30 | 差動増幅器回路 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8542222B2 (ja) |
JP (1) | JP5273807B2 (ja) |
CN (1) | CN101989841A (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5457220B2 (ja) * | 2010-02-18 | 2014-04-02 | ルネサスエレクトロニクス株式会社 | 出力回路及びデータドライバ及び表示装置 |
JP5270641B2 (ja) * | 2010-11-10 | 2013-08-21 | シャープ株式会社 | 照度センサ、およびこの照度センサを備えた表示装置 |
WO2012127956A1 (ja) * | 2011-03-22 | 2012-09-27 | ルネサスエレクトロニクス株式会社 | 演算増幅器回路並びにそれを用いた表示パネルドライバ及び表示装置 |
US9059692B2 (en) * | 2011-05-31 | 2015-06-16 | Fairchild Semiconductor Corporation | Rail to rail comparator with wide hysteresis and memory |
KR101790580B1 (ko) * | 2011-12-08 | 2017-10-30 | 에스케이하이닉스 주식회사 | 반도체 장치 및 그 동작방법 |
US8638126B2 (en) * | 2012-01-18 | 2014-01-28 | Richtek Technology Corporation, R.O.C. | Rail-to-rail comparator |
JP6289974B2 (ja) * | 2014-03-31 | 2018-03-07 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
US9401679B1 (en) * | 2015-05-01 | 2016-07-26 | Analog Devices Global | Apparatus and method for improving power supply rejection ratio |
CN106612112B (zh) * | 2015-10-21 | 2022-02-08 | 恩智浦美国有限公司 | 具有共享有源负载的轨对轨比较器 |
JP2017219586A (ja) * | 2016-06-03 | 2017-12-14 | 株式会社ジャパンディスプレイ | 信号供給回路及び表示装置 |
EP3481901A4 (en) * | 2016-07-07 | 2020-07-15 | Becton, Dickinson and Company | WATER SOLVATED FLUORESCENT CONJUGATED POLYMERS |
JP2019033414A (ja) * | 2017-08-09 | 2019-02-28 | 富士電機株式会社 | 差動回路およびopアンプ |
JPWO2021165788A1 (ja) * | 2020-02-21 | 2021-08-26 | ||
CN116346047A (zh) * | 2021-12-24 | 2023-06-27 | 圣邦微电子(北京)股份有限公司 | 轨到轨运算放大器及其输入级结构 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5311145A (en) | 1993-03-25 | 1994-05-10 | North American Philips Corporation | Combination driver-summing circuit for rail-to-rail differential amplifier |
JP3119221B2 (ja) * | 1997-11-18 | 2000-12-18 | 日本電気株式会社 | 演算増幅器 |
JP3150101B2 (ja) * | 1998-04-20 | 2001-03-26 | 日本電気アイシーマイコンシステム株式会社 | 演算増幅回路 |
JP4240316B2 (ja) * | 2004-04-19 | 2009-03-18 | 旭化成エレクトロニクス株式会社 | 演算増幅器 |
US7262662B2 (en) * | 2004-04-19 | 2007-08-28 | Asahi Kasei Microsystems Co., Ltd. | Operational amplifier |
JP2006222796A (ja) * | 2005-02-10 | 2006-08-24 | Nec Electronics Corp | 演算増幅回路 |
JP2007202127A (ja) * | 2005-12-28 | 2007-08-09 | Nec Electronics Corp | 差動増幅器、及びそれを用いた表示装置 |
-
2009
- 2009-07-30 JP JP2009178218A patent/JP5273807B2/ja active Active
-
2010
- 2010-06-24 US US12/822,832 patent/US8542222B2/en active Active
- 2010-06-30 CN CN2010102213413A patent/CN101989841A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2011035559A (ja) | 2011-02-17 |
US20110025654A1 (en) | 2011-02-03 |
US8542222B2 (en) | 2013-09-24 |
CN101989841A (zh) | 2011-03-23 |
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