JP5441765B2 - スイッチトキャパシタアンプ - Google Patents
スイッチトキャパシタアンプ Download PDFInfo
- Publication number
- JP5441765B2 JP5441765B2 JP2010049873A JP2010049873A JP5441765B2 JP 5441765 B2 JP5441765 B2 JP 5441765B2 JP 2010049873 A JP2010049873 A JP 2010049873A JP 2010049873 A JP2010049873 A JP 2010049873A JP 5441765 B2 JP5441765 B2 JP 5441765B2
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- JP
- Japan
- Prior art keywords
- switch
- input
- output
- capacitor
- amplifier
- 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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- 239000003990 capacitor Substances 0.000 title claims description 114
- 238000005070 sampling Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F11/00—Dielectric amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/005—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements using switched capacitors, e.g. dynamic amplifiers; using switched capacitors as resistors in differential 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
-
- 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
- H03F3/70—Charge amplifiers
-
- 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
- H03F2203/45514—Indexing scheme relating to differential amplifiers the FBC comprising one or more switched capacitors, and being coupled between the LC and the IC
-
- 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
- H03F2203/45551—Indexing scheme relating to differential amplifiers the IC comprising one or more switched capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Description
まず、スイッチトキャパシタアンプの構成について説明する。図1は、スイッチトキャパシタアンプを示す回路図である。
12 入力スイッチ
13、15〜17 スイッチ
14 出力スイッチ
18 入力容量
19 出力容量
20 保持容量
30 制御回路
Claims (3)
- スイッチトキャパシタアンプにおいて、
入力容量と、
スイッチトキャパシタアンプの入力端子と前記入力容量との間に設けられる入力スイッチと、
前記入力容量と前記入力スイッチの接続点とスイッチトキャパシタアンプの基準電圧入力端子の間に設けられる第一の基準電圧スイッチと、
前記入力容量の容量値よりも小さい容量値の出力容量と、
前記出力容量とスイッチトキャパシタアンプの出力端子との間に設けられる出力スイッチと、
入力電圧を前記入力容量と前記出力容量との容量比によって増幅し、出力電圧を出力する内部アンプと、
前記出力電圧に基づいた電荷を充電される保持容量と、
前記第一の基準電圧スイッチを制御する第一のクロック信号と、前記入力スイッチを制御する第二のクロック信号と、前記出力スイッチを制御する第三のクロック信号とを出力し、サンプル時に、前記第一の基準電圧スイッチをオフ、前記入力スイッチがオンしてから、所定時間が経過すると、前記出力スイッチをオンするように制御する制御回路と、
を備えることを特徴とするスイッチトキャパシタアンプ。 - 第二の基準電圧スイッチと、第三の基準電圧スイッチと、第四の基準電圧スイッチとをさらに備え、
前記入力スイッチ及び前記入力容量は、前記スイッチトキャパシタアンプの入力端子と前記内部アンプの反転入力端子と間に、順番に設けられ、
前記第一の基準電圧スイッチは、前記入力スイッチと前記入力容量との接続点と、前記基準電圧入力端子との間に、設けられ、
前記第三の基準電圧スイッチ及び前記保持容量は、前記内部アンプの反転入力端子と前記内部アンプの出力端子と間に、順番に設けられ、
前記第四の基準電圧スイッチは、前記第三の基準電圧スイッチと前記保持容量との接続点と、前記基準電圧入力端子との間に、設けられ、
前記出力容量及び前記出力スイッチは、前記内部アンプの反転入力端子と前記内部アンプの出力端子と間に、順番に設けられ、
前記第二の基準電圧スイッチは、前記出力容量と前記出力スイッチとの接続点と、前記基準電圧入力端子との間に、設けられ、
前記内部アンプの非反転入力端子は、前記基準電圧入力端子に接続され、出力端子は、前記スイッチトキャパシタアンプの出力端子に接続される、
ことを特徴とする請求項1記載のスイッチトキャパシタアンプ。 - 前記入力容量と前記出力容量の充放電時間が略等しい、
ことを特徴とする請求項1または2記載のスイッチトキャパシタアンプ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010049873A JP5441765B2 (ja) | 2010-03-05 | 2010-03-05 | スイッチトキャパシタアンプ |
TW100105635A TWI535197B (zh) | 2010-03-05 | 2011-02-21 | Switched capacitive amplifier |
KR1020110018382A KR101756481B1 (ko) | 2010-03-05 | 2011-03-02 | 스위치드 커패시터 앰프 |
US13/039,860 US8274327B2 (en) | 2010-03-05 | 2011-03-03 | Switched capacitor amplifier |
CN201110058673.9A CN102195571B (zh) | 2010-03-05 | 2011-03-04 | 开关电容放大器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010049873A JP5441765B2 (ja) | 2010-03-05 | 2010-03-05 | スイッチトキャパシタアンプ |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011188143A JP2011188143A (ja) | 2011-09-22 |
JP2011188143A5 JP2011188143A5 (ja) | 2013-02-28 |
JP5441765B2 true JP5441765B2 (ja) | 2014-03-12 |
Family
ID=44530822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010049873A Active JP5441765B2 (ja) | 2010-03-05 | 2010-03-05 | スイッチトキャパシタアンプ |
Country Status (5)
Country | Link |
---|---|
US (1) | US8274327B2 (ja) |
JP (1) | JP5441765B2 (ja) |
KR (1) | KR101756481B1 (ja) |
CN (1) | CN102195571B (ja) |
TW (1) | TWI535197B (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI519062B (zh) | 2013-02-20 | 2016-01-21 | 聯詠科技股份有限公司 | 運算放大器電路及提高其驅動能力的方法 |
CN104038166B (zh) * | 2013-03-06 | 2017-07-28 | 联咏科技股份有限公司 | 运算放大器电路及提高其驱动能力的方法 |
US10177781B2 (en) | 2013-06-24 | 2019-01-08 | Silicon Laboratories Inc. | Circuit including a switched capacitor bridge and method |
WO2016083288A1 (de) * | 2014-11-28 | 2016-06-02 | Elmos Semiconductor Aktiengesellschaft | Sc-verstärkerschaltung |
KR101693111B1 (ko) * | 2015-05-15 | 2017-01-04 | 한양대학교 산학협력단 | 스위치 커패시터 증폭기 및 그 구동 방법 |
US10153751B2 (en) * | 2017-01-23 | 2018-12-11 | Samsung Display Co., Ltd. | Second order switched capacitor filter |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4555668A (en) * | 1983-10-14 | 1985-11-26 | American Microsystems, Inc. | Gain amplifier |
US4543534A (en) | 1984-05-04 | 1985-09-24 | The Regeants Of University Of Calif. | Offset compensated switched capacitor circuits |
JPS62277821A (ja) * | 1986-05-26 | 1987-12-02 | Kenzo Watanabe | 電荷平衡型アナログ・デイジタル変換器 |
US4806874A (en) * | 1988-04-01 | 1989-02-21 | National Semiconductor Corporation | Switched capacitor amplifier circuit |
JP3079368B2 (ja) * | 1997-10-24 | 2000-08-21 | セイコーインスツルメンツ株式会社 | スイッチトキャパシタ増幅回路 |
US6194946B1 (en) * | 1998-05-07 | 2001-02-27 | Burr-Brown Corporation | Method and circuit for compensating the non-linearity of capacitors |
US6191648B1 (en) * | 1999-04-19 | 2001-02-20 | National Semiconductor Corporation | Switched-capacitor cosine filter circuit |
US6778121B2 (en) * | 2002-06-13 | 2004-08-17 | Engim, Inc. | High linearity digital-to-analog converter |
JP4314172B2 (ja) * | 2004-08-30 | 2009-08-12 | シャープ株式会社 | 増幅型固体撮像装置 |
KR100888031B1 (ko) * | 2006-10-20 | 2009-03-09 | 삼성전자주식회사 | 두 배의 정밀 이득을 갖는 비율-독립 스위치 커패시터증폭기 및 그 동작 방법 |
JP2009027281A (ja) * | 2007-07-17 | 2009-02-05 | Sony Corp | サンプルホールド回路およびパイプラインad変換器 |
US7795959B2 (en) * | 2008-02-01 | 2010-09-14 | Analog Devices, Inc. | Switched-capacitor circuit having switch-less feedback path |
CN101364800B (zh) * | 2008-09-26 | 2011-09-14 | 海芯科技(厦门)有限公司 | 一种带内置放大器的低噪声开关电容电路 |
US7990209B2 (en) * | 2009-06-19 | 2011-08-02 | Allegro Microsystems, Inc. | Switched capacitor notch filter |
-
2010
- 2010-03-05 JP JP2010049873A patent/JP5441765B2/ja active Active
-
2011
- 2011-02-21 TW TW100105635A patent/TWI535197B/zh not_active IP Right Cessation
- 2011-03-02 KR KR1020110018382A patent/KR101756481B1/ko active IP Right Grant
- 2011-03-03 US US13/039,860 patent/US8274327B2/en active Active
- 2011-03-04 CN CN201110058673.9A patent/CN102195571B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
US20110215864A1 (en) | 2011-09-08 |
KR20110101063A (ko) | 2011-09-15 |
KR101756481B1 (ko) | 2017-07-10 |
US8274327B2 (en) | 2012-09-25 |
CN102195571B (zh) | 2015-08-05 |
TW201212531A (en) | 2012-03-16 |
JP2011188143A (ja) | 2011-09-22 |
CN102195571A (zh) | 2011-09-21 |
TWI535197B (zh) | 2016-05-21 |
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