JP7001468B2 - オペアンプ - Google Patents
オペアンプ Download PDFInfo
- Publication number
- JP7001468B2 JP7001468B2 JP2017252125A JP2017252125A JP7001468B2 JP 7001468 B2 JP7001468 B2 JP 7001468B2 JP 2017252125 A JP2017252125 A JP 2017252125A JP 2017252125 A JP2017252125 A JP 2017252125A JP 7001468 B2 JP7001468 B2 JP 7001468B2
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- differential
- transistor
- differential input
- input pair
- 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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Links
- 239000003990 capacitor Substances 0.000 claims description 11
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
- 230000003071 parasitic effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
Images
Classifications
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- 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
- H03F3/45273—Mirror types
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- 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
- H03F3/45076—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
- H03F3/45269—Complementary non-cross coupled types
-
- 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
- H03F3/45659—Controlling the loading circuit of the differential amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
-
- 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
- H03F2203/45156—At least one capacitor being added at the input of a dif amp
-
- 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
- H03F2203/45338—Indexing scheme relating to differential amplifiers the AAC comprising one or more series circuits of a resistor and a capacitor as feedback circuit elements
-
- 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
- H03F2203/45652—Indexing scheme relating to differential amplifiers the LC comprising one or more further dif amp stages, either identical to the dif amp or not, in cascade
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Description
同様に、「部材Cが、部材Aと部材Bの間に設けられた状態」とは、部材Aと部材C、あるいは部材Bと部材Cが直接的に接続される場合のほか、電気的な接続状態に影響を及ぼさず、あるいは機能を阻害しない他の部材を介して間接的に接続される場合も含む。
Claims (6)
- オペアンプであって、
前記オペアンプの入力信号を受ける差動入力対と、
前記差動入力対に電流を供給するテイル電流源と、
その入力が、前記差動入力対の出力と接続される負荷回路と、
ゲインブースト回路と、
を備え、
前記ゲインブースト回路は、
初段の第1差動コンダクタンスアンプと、
後段の第2差動コンダクタンスアンプと、
前記第2差動コンダクタンスアンプの2つの入出力間それぞれに設けられた位相補償キャパシタと、
を備え、
前記第1差動コンダクタンスアンプは、前記オペアンプの前記入力信号を受ける第1差動入力対を含み、
前記第2差動コンダクタンスアンプは、
前記第1差動入力対の出力信号を受ける第2差動入力対と、
前記第2差動入力対に電流を供給する第2定電流源と、
を含み、前記第2差動入力対の出力が、前記差動入力対の出力および前記負荷回路の前記入力と接続されていることを特徴とするオペアンプ。 - 前記ゲインブースト回路は、前記第2差動コンダクタンスアンプの2つの入出力間それぞれに、前記位相補償キャパシタと直列に設けられた抵抗をさらに備えることを特徴とする請求項1に記載のオペアンプ。
- 前記ゲインブースト回路は、
前記第1差動入力対に負荷として設けられた負荷トランジスタのペアと、
前記第1差動入力対の出力のコモンモード電圧が目標電圧に近づくように、前記負荷トランジスタのペアのゲート電圧を調節するコモンモードフィードバック回路と、
をさらに含むことを特徴とする請求項1または2に記載のオペアンプ。 - 前記第2差動入力対は、第1トランジスタおよび第2トランジスタを含み、
前記第1トランジスタのゲートと前記第2トランジスタのドレイン間、前記第2トランジスタのゲートと前記第1トランジスタのドレイン間それぞれに、前記位相補償キャパシタが設けられることを特徴とする請求項1から3のいずれかに記載のオペアンプ。 - 前記第1トランジスタのゲートと前記第2トランジスタのドレイン間、前記第2トランジスタのゲートと前記第1トランジスタのドレイン間それぞれに、前記位相補償キャパシタと直列に抵抗が設けられることを特徴とする請求項4に記載のオペアンプ。
- ひとつの半導体基板に一体集積化されることを特徴とする請求項1から5のいずれかに記載のオペアンプ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017252125A JP7001468B2 (ja) | 2017-12-27 | 2017-12-27 | オペアンプ |
US16/232,239 US10812029B2 (en) | 2017-12-27 | 2018-12-26 | Operational amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017252125A JP7001468B2 (ja) | 2017-12-27 | 2017-12-27 | オペアンプ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019118060A JP2019118060A (ja) | 2019-07-18 |
JP7001468B2 true JP7001468B2 (ja) | 2022-01-19 |
Family
ID=66951566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017252125A Active JP7001468B2 (ja) | 2017-12-27 | 2017-12-27 | オペアンプ |
Country Status (2)
Country | Link |
---|---|
US (1) | US10812029B2 (ja) |
JP (1) | JP7001468B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11365025B2 (en) * | 2019-05-24 | 2022-06-21 | Charles Birnstihl | Pallet cover and transport container |
WO2024135224A1 (ja) * | 2022-12-19 | 2024-06-27 | ローム株式会社 | オペアンプ |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020003441A1 (en) | 1998-07-13 | 2002-01-10 | Jesper Steensgaard-Madsen | Wide-bandwidth operational amplifier |
US20060176108A1 (en) | 2005-02-08 | 2006-08-10 | Huijsing Johan H | Frequency stabilization of chopper-stabilized amplifiers |
US20070096807A1 (en) | 2005-11-02 | 2007-05-03 | Marvell International Ltd. | Transconductance amplifiers with compensation |
JP2009290704A (ja) | 2008-05-30 | 2009-12-10 | Fujitsu Ltd | 差動増幅回路 |
US7696817B1 (en) | 2008-10-17 | 2010-04-13 | Maxim Integrated Products, Inc. | Auto-gain correction and common mode voltage cancellation in a precision amplifier |
JP2014082535A (ja) | 2012-10-12 | 2014-05-08 | Asahi Kasei Electronics Co Ltd | 演算増幅器 |
JP2017076942A (ja) | 2015-10-16 | 2017-04-20 | ローム株式会社 | チョッパ安定化アンプ |
JP2017200221A (ja) | 2011-06-20 | 2017-11-02 | ザ リージェンツ オブ ザ ユニヴァーシティー オブ カリフォルニアThe Regents Of The University Of California | 神経増幅器 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3971605B2 (ja) | 2001-12-19 | 2007-09-05 | 松下電器産業株式会社 | ゲインブースト演算増幅回路 |
US8558611B2 (en) * | 2012-02-14 | 2013-10-15 | International Business Machines Corporation | Peaking amplifier with capacitively-coupled parallel input stages |
-
2017
- 2017-12-27 JP JP2017252125A patent/JP7001468B2/ja active Active
-
2018
- 2018-12-26 US US16/232,239 patent/US10812029B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020003441A1 (en) | 1998-07-13 | 2002-01-10 | Jesper Steensgaard-Madsen | Wide-bandwidth operational amplifier |
US20060176108A1 (en) | 2005-02-08 | 2006-08-10 | Huijsing Johan H | Frequency stabilization of chopper-stabilized amplifiers |
US20070096807A1 (en) | 2005-11-02 | 2007-05-03 | Marvell International Ltd. | Transconductance amplifiers with compensation |
JP2009290704A (ja) | 2008-05-30 | 2009-12-10 | Fujitsu Ltd | 差動増幅回路 |
US7696817B1 (en) | 2008-10-17 | 2010-04-13 | Maxim Integrated Products, Inc. | Auto-gain correction and common mode voltage cancellation in a precision amplifier |
JP2017200221A (ja) | 2011-06-20 | 2017-11-02 | ザ リージェンツ オブ ザ ユニヴァーシティー オブ カリフォルニアThe Regents Of The University Of California | 神経増幅器 |
JP2014082535A (ja) | 2012-10-12 | 2014-05-08 | Asahi Kasei Electronics Co Ltd | 演算増幅器 |
JP2017076942A (ja) | 2015-10-16 | 2017-04-20 | ローム株式会社 | チョッパ安定化アンプ |
Also Published As
Publication number | Publication date |
---|---|
US10812029B2 (en) | 2020-10-20 |
JP2019118060A (ja) | 2019-07-18 |
US20190199304A1 (en) | 2019-06-27 |
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