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FR2853471B1 - Circuit amplificateur audio - Google Patents

Circuit amplificateur audio

Info

Publication number
FR2853471B1
FR2853471B1 FR0304067A FR0304067A FR2853471B1 FR 2853471 B1 FR2853471 B1 FR 2853471B1 FR 0304067 A FR0304067 A FR 0304067A FR 0304067 A FR0304067 A FR 0304067A FR 2853471 B1 FR2853471 B1 FR 2853471B1
Authority
FR
France
Prior art keywords
amplifier circuit
audio amplifier
audio
circuit
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.)
Expired - Fee Related
Application number
FR0304067A
Other languages
English (en)
Other versions
FR2853471A1 (fr
Inventor
Christophe Forel
Robert Cittadini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics SA
Original Assignee
STMicroelectronics SA
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 STMicroelectronics SA filed Critical STMicroelectronics SA
Priority to FR0304067A priority Critical patent/FR2853471B1/fr
Priority to US10/816,198 priority patent/US7053704B2/en
Publication of FR2853471A1 publication Critical patent/FR2853471A1/fr
Application granted granted Critical
Publication of FR2853471B1 publication Critical patent/FR2853471B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/307—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in push-pull amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Amplifiers (AREA)
FR0304067A 2003-04-01 2003-04-01 Circuit amplificateur audio Expired - Fee Related FR2853471B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0304067A FR2853471B1 (fr) 2003-04-01 2003-04-01 Circuit amplificateur audio
US10/816,198 US7053704B2 (en) 2003-04-01 2004-04-01 Audio amplifier circuit with suppression of unwanted noise when starting from an off or standby state

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0304067A FR2853471B1 (fr) 2003-04-01 2003-04-01 Circuit amplificateur audio

Publications (2)

Publication Number Publication Date
FR2853471A1 FR2853471A1 (fr) 2004-10-08
FR2853471B1 true FR2853471B1 (fr) 2005-06-24

Family

ID=32982163

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0304067A Expired - Fee Related FR2853471B1 (fr) 2003-04-01 2003-04-01 Circuit amplificateur audio

Country Status (2)

Country Link
US (1) US7053704B2 (fr)
FR (1) FR2853471B1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548933B1 (fr) * 2003-12-23 2007-11-28 STMicroelectronics S.r.l. Méthode pour la prévention des variations de tension abruptes à la sortie d'une paire de circuits d'amplificateur et circuit de régulation pour une paire de circuits d'amplificateur à autoconfiguration dans une configuration en pont
US7435627B2 (en) * 2005-08-11 2008-10-14 International Business Machines Corporation Techniques for providing decoupling capacitance
TW200711257A (en) * 2005-09-02 2007-03-16 Princeton Technology Corp Charging circuit, integrated circuit and control method
EP1811654A1 (fr) * 2006-01-20 2007-07-25 Stmicroelectronics SA Configuration de commutateurs de rétroaction d'un amplificateur à taux de réjection du bruit d'alimentation amélioré
EP1811653A1 (fr) * 2006-01-20 2007-07-25 Stmicroelectronics SA Configuration d'interrupteur d'entrée d'amplificateur avec PSRR amélioré
US7477101B2 (en) * 2006-07-21 2009-01-13 Skyworks Solutions, Inc. Fast charge circuit for use in amplifiers
KR101243619B1 (ko) * 2006-07-25 2013-03-14 세미컨덕터 콤포넨츠 인더스트리즈 엘엘씨 증폭 회로 및 증폭 방법
KR100770747B1 (ko) * 2006-08-23 2007-10-29 삼성전자주식회사 디지털 앰프 및 음성 재생 방법
TW200849812A (en) * 2007-06-15 2008-12-16 Tai 1 Microelectronics Corp Circuit and method for eliminating speaker crackle during turning on/off a power amplifier
KR101370298B1 (ko) 2007-08-20 2014-03-05 세미컨덕터 콤포넨츠 인더스트리즈 엘엘씨 증폭기 회로 및 증폭기 회로 형성 방법
US20090121555A1 (en) * 2007-11-08 2009-05-14 Augustyn Michael T Vehicle audio system power supply
DE102008047333B4 (de) * 2008-09-16 2013-10-24 Universität Bremen Verbindungen zwischen einem monolithischen Metallbauteil und einem endlos faserverstärkten Laminatbauteil sowie Verfahren zur Herstellung derselben
WO2010047689A1 (fr) 2008-10-21 2010-04-29 Semiconductor Components Industries, L.L.C. Amplificateur à transitoires de sortie réduites et procédé associé
US11581864B2 (en) * 2019-03-15 2023-02-14 Elliptic Laboratories As Touchless interaction using audio components
NO346082B1 (en) * 2019-03-15 2022-02-07 Elliptic Laboratories As Touchless interaction using audio components

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717204A (en) * 1980-07-04 1982-01-28 Fujitsu Ltd Transient sound prevention type power amplifying circuit
US5939938A (en) * 1995-10-13 1999-08-17 National Semiconductor Corporation Amplifier circuit with reduced DC power related turn-on and turn-off transients
US5648742A (en) * 1995-10-23 1997-07-15 National Semiconductor Corporation Amplifier circuit with reduced turn-on and turn-off transients
US5703529A (en) * 1995-10-13 1997-12-30 National Semiconductor Corporation Amplifier circuit with reduced DC power related transients
US5642074A (en) * 1995-10-13 1997-06-24 National Semiconductor Corporation Amplifier circuit with reduced turn-on and turn-off transients
US6346854B1 (en) * 2000-10-31 2002-02-12 National Semiconductor Corporation Amplifier circuit with reduced DC power related turn-on and turn-off transients
FR2830699B1 (fr) * 2001-10-05 2004-12-24 St Microelectronics Sa Circuit amplificateur audio

Also Published As

Publication number Publication date
US20040212427A1 (en) 2004-10-28
FR2853471A1 (fr) 2004-10-08
US7053704B2 (en) 2006-05-30

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20131231