WO2008114511A1 - Ａｇｃ回路 - Google Patents

Ａｇｃ回路 Download PDF

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Publication number
WO2008114511A1
WO2008114511A1 PCT/JP2008/000642 JP2008000642W WO2008114511A1 WO 2008114511 A1 WO2008114511 A1 WO 2008114511A1 JP 2008000642 W JP2008000642 W JP 2008000642W WO 2008114511 A1 WO2008114511 A1 WO 2008114511A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
offset
output signal
signal
output
Prior art date
Application number
PCT/JP2008/000642
Other languages
English (en)
French (fr)
Inventor
Takayuki Nakai
Takuma Ishida
Original Assignee
Panasonic Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/298,279 priority Critical patent/US7795967B2/en
Priority to JP2009505083A priority patent/JPWO2008114511A1/ja
Publication of WO2008114511A1 publication Critical patent/WO2008114511A1/ja

Links

Classifications

    • 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
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/3026—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Circuits Of Receivers In General (AREA)
  • Amplifiers (AREA)

Abstract

　外付容量を一切使用せずオフセット電圧が非常に小さくまた集積化の容易なＡＧＣ回路を提供する。そのために、利得制御信号により制御される利得を有しオフセット補償信号により出力の直流オフセットが制御される可変利得増幅回路（ＧＣＡ１）と、この可変利得増幅回路（ＧＣＡ１）の出力信号をＡ／Ｄ変換するＡ／Ｄ変換回路（ＡＤ１）と、このＡ／Ｄ変換回路（ＡＤ１）の出力信号のピーク検出を行い、振幅レベルを検出するレベル検出回路（Ｄｅｔ１）と、このレベル検出回路（Ｄｅｔ１）の出力信号に応じた利得制御信号を出力する利得制御回路（Ｇｃｔｒｌ１）と、Ａ／Ｄ変換回路（ＡＤ１）の出力信号から直流成分を取り出すローパスフィルタを備えたオフセット検出回路（Ｄｅｔ２）と、オフセット検出回路（Ｄｅｔ２）の出力信号をＤ／Ａ変換しオフセット補償信号を出力するＤ／Ａ変換回路（ＤＡ１）とを設ける。
PCT/JP2008/000642 2007-03-19 2008-03-19 Ａｇｃ回路 WO2008114511A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/298,279 US7795967B2 (en) 2007-03-19 2008-03-19 AGC circuit
JP2009505083A JPWO2008114511A1 (ja) 2007-03-19 2008-03-19 Ａｇｃ回路

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-070274 2007-03-19
JP2007070274 2007-03-19

Publications (1)

Publication Number Publication Date
WO2008114511A1 true WO2008114511A1 (ja) 2008-09-25

Family

ID=39765629

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000642 WO2008114511A1 (ja) 2007-03-19 2008-03-19 Ａｇｃ回路

Country Status (4)

Country Link
US (1) US7795967B2 (ja)
JP (1) JPWO2008114511A1 (ja)
CN (1) CN101542899A (ja)
WO (1) WO2008114511A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014120840A (ja) * 2012-12-14 2014-06-30 Renesas Electronics Corp 半導体装置及びオフセット電圧の補正方法
JP2021184649A (ja) * 2017-09-19 2021-12-02 株式会社東芝 増幅回路、ａｄ変換器、無線通信装置、及びセンサシステム

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CN101478296B (zh) * 2009-01-05 2011-12-21 华为终端有限公司 一种多声道***中的增益控制方法及装置
US8107913B1 (en) * 2009-05-07 2012-01-31 Qualcomm Atheros, Inc. Method and apparatus for a digital regulated local oscillation (LO) buffer in radio frequency circuits
US8611836B2 (en) 2010-08-25 2013-12-17 Skyworks Solutions, Inc. Amplifier gain adjustment in response to reduced supply voltage
EP2498400A1 (en) * 2011-03-11 2012-09-12 Dialog Semiconductor GmbH A delta-sigma modulator approach to increased amplifier gain resolution
CN102355214B (zh) * 2011-10-31 2014-01-15 四川和芯微电子股份有限公司 可调增益音频功率放大电路
EP2592751B1 (en) 2011-11-14 2017-05-31 Dialog Semiconductor GmbH A sigma-delta modulator for increased volume resolution in audio output stages
CN102607615B (zh) * 2012-03-29 2015-01-21 天津大学 线阵ccd像元级信号增益自补偿方法及补偿电路
CN102624345A (zh) * 2012-04-09 2012-08-01 武汉科技大学 一种基于忆阻器的自动增益控制电路
US9155140B2 (en) * 2012-06-07 2015-10-06 Gabriel Yavor Optical waveform generator
JP6214924B2 (ja) * 2012-09-14 2017-10-18 ルネサスエレクトロニクス株式会社 コントローラ及びコントローラを有するシステム
JP6207871B2 (ja) * 2013-04-17 2017-10-04 ルネサスエレクトロニクス株式会社 半導体装置及びインバータシステム
US9197179B2 (en) * 2013-08-30 2015-11-24 Broadcom Corporation Low voltage transmitter
TWI521870B (zh) * 2013-11-14 2016-02-11 瑞昱半導體股份有限公司 電流平衡裝置與方法
US9432004B2 (en) * 2014-04-17 2016-08-30 Stmicroelectronics, Inc. Automatic gain and offset compensation for an electronic circuit
US9246458B2 (en) 2014-06-05 2016-01-26 Stmicroelectronics, Inc. Fixed gain amplifier circuit
JP6399442B2 (ja) * 2014-08-07 2018-10-03 パナソニックＩｐマネジメント株式会社 給電制御装置
CN104270109B (zh) * 2014-09-23 2017-06-30 中国海洋石油总公司 一种压控增益放大电路
CN105634427B (zh) * 2014-10-29 2018-03-16 北京航天计量测试技术研究所 一种提高连续波信号微光探测放大电路增益的装置
CN107787554B (zh) * 2015-07-07 2021-06-04 马维尔国际贸易有限公司 放大电路和补偿输入的电压偏移的方法
US10841680B2 (en) 2016-08-09 2020-11-17 Harman International Industries, Incorporated Microphone and method for processing audio signals
US10852329B2 (en) * 2017-10-30 2020-12-01 Microchip Technology Incorporated High precision current sensing using sense amplifier with digital AZ offset compensation
JP6986432B2 (ja) * 2017-12-15 2021-12-22 株式会社デンソーテン アンプ回路
CN108405629B (zh) * 2018-03-31 2019-11-22 扬州大学 一种基于串级控制的热连轧agc***的控制方法的仿真电路
KR102628656B1 (ko) 2018-07-04 2024-01-24 삼성전자주식회사 신경 스파이크 검출 장치
US10901009B2 (en) * 2019-02-21 2021-01-26 Shenzhen GOODIX Technology Co., Ltd. Power detector for radiofrequency power amplifier circuits
CN112187203B (zh) * 2020-09-14 2022-06-21 北京航空航天大学 一种自动增益控制电路及其增益调节方法
CN113364418B (zh) * 2021-06-28 2023-03-21 贵州航天电子科技有限公司 一种程控增益放大电路及信号控制方法
CN114900143B (zh) * 2022-07-11 2022-11-08 南京燧锐科技有限公司 自动增益控制电路及其控制方法

Citations (9)

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JPS60200604A (ja) * 1984-03-26 1985-10-11 Hitachi Ltd 可変利得増幅回路
JPS61131073A (ja) * 1984-11-29 1986-06-18 Fuji Electric Co Ltd 対数演算回路
JPH0794953A (ja) * 1993-09-20 1995-04-07 Fujitsu Ltd Ｍｏｓ反転増幅回路
JPH09500250A (ja) * 1993-07-12 1997-01-07 アナログ・ディバイセス・インコーポレーテッド 利得制御回路を校正する方法および装置
JP2000311350A (ja) * 1999-04-23 2000-11-07 Sony Corp 自動利得制御装置、自動利得制御方法及び光ディスク装置
JP2001036359A (ja) * 1999-07-22 2001-02-09 Advantest Corp アナログ信号処理回路およびａｄ変換装置
JP2003022584A (ja) * 2001-07-10 2003-01-24 Ricoh Co Ltd 光ディスクスタンパ検査装置、光ディスクスタンパ検査方法およびその方法をコンピュータに実行させるためのプログラム
JP2003273673A (ja) * 2002-03-18 2003-09-26 Matsushita Electric Ind Co Ltd 可変利得アンプのオフセットコントロール装置
JP2006165912A (ja) * 2004-12-06 2006-06-22 Rohm Co Ltd 信号処理装置およびそれを用いた撮像装置

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JPH0374913A (ja) 1989-08-16 1991-03-29 Matsushita Electric Ind Co Ltd 自動利得制御回路
JP2901899B2 (ja) 1994-08-26 1999-06-07 松下電器産業株式会社 自動利得制御装置
JP2005117282A (ja) * 2003-10-06 2005-04-28 Toyota Industries Corp 利得制御回路
US6952132B2 (en) * 2003-11-26 2005-10-04 Scintera Networks, Inc. Method and apparatus for automatic gain control
JP4139800B2 (ja) 2004-08-24 2008-08-27 松下電器産業株式会社 Ａｇｃ回路

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60200604A (ja) * 1984-03-26 1985-10-11 Hitachi Ltd 可変利得増幅回路
JPS61131073A (ja) * 1984-11-29 1986-06-18 Fuji Electric Co Ltd 対数演算回路
JPH09500250A (ja) * 1993-07-12 1997-01-07 アナログ・ディバイセス・インコーポレーテッド 利得制御回路を校正する方法および装置
JPH0794953A (ja) * 1993-09-20 1995-04-07 Fujitsu Ltd Ｍｏｓ反転増幅回路
JP2000311350A (ja) * 1999-04-23 2000-11-07 Sony Corp 自動利得制御装置、自動利得制御方法及び光ディスク装置
JP2001036359A (ja) * 1999-07-22 2001-02-09 Advantest Corp アナログ信号処理回路およびａｄ変換装置
JP2003022584A (ja) * 2001-07-10 2003-01-24 Ricoh Co Ltd 光ディスクスタンパ検査装置、光ディスクスタンパ検査方法およびその方法をコンピュータに実行させるためのプログラム
JP2003273673A (ja) * 2002-03-18 2003-09-26 Matsushita Electric Ind Co Ltd 可変利得アンプのオフセットコントロール装置
JP2006165912A (ja) * 2004-12-06 2006-06-22 Rohm Co Ltd 信号処理装置およびそれを用いた撮像装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014120840A (ja) * 2012-12-14 2014-06-30 Renesas Electronics Corp 半導体装置及びオフセット電圧の補正方法
JP2021184649A (ja) * 2017-09-19 2021-12-02 株式会社東芝 増幅回路、ａｄ変換器、無線通信装置、及びセンサシステム
JP7228643B2 (ja) 2017-09-19 2023-02-24 株式会社東芝 増幅回路、ａｄ変換器、無線通信装置、及びセンサシステム

Also Published As

Publication number Publication date
CN101542899A (zh) 2009-09-23
US7795967B2 (en) 2010-09-14
JPWO2008114511A1 (ja) 2010-07-01
US20090096528A1 (en) 2009-04-16

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