FR2853472B1 - Circuit amplificateur audio - Google Patents

Circuit amplificateur audio

Info

Publication number
FR2853472B1
FR2853472B1 FR0304068A FR0304068A FR2853472B1 FR 2853472 B1 FR2853472 B1 FR 2853472B1 FR 0304068 A FR0304068 A FR 0304068A FR 0304068 A FR0304068 A FR 0304068A FR 2853472 B1 FR2853472 B1 FR 2853472B1
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 - Lifetime
Application number
FR0304068A
Other languages
English (en)
Other versions
FR2853472A1 (fr
Inventor
Vincent Rabary
Frederic Goutti
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 FR0304068A priority Critical patent/FR2853472B1/fr
Priority to US10/816,126 priority patent/US7113031B2/en
Publication of FR2853472A1 publication Critical patent/FR2853472A1/fr
Application granted granted Critical
Publication of FR2853472B1 publication Critical patent/FR2853472B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Amplifiers (AREA)
FR0304068A 2003-04-01 2003-04-01 Circuit amplificateur audio Expired - Lifetime FR2853472B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0304068A FR2853472B1 (fr) 2003-04-01 2003-04-01 Circuit amplificateur audio
US10/816,126 US7113031B2 (en) 2003-04-01 2004-04-01 Audio amplifier circuit with suppression of unwanted noise when powered on from standby

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0304068A FR2853472B1 (fr) 2003-04-01 2003-04-01 Circuit amplificateur audio

Publications (2)

Publication Number Publication Date
FR2853472A1 FR2853472A1 (fr) 2004-10-08
FR2853472B1 true FR2853472B1 (fr) 2005-06-24

Family

ID=32982164

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0304068A Expired - Lifetime FR2853472B1 (fr) 2003-04-01 2003-04-01 Circuit amplificateur audio

Country Status (2)

Country Link
US (1) US7113031B2 (fr)
FR (1) FR2853472B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007150534A (ja) * 2005-11-25 2007-06-14 Oki Electric Ind Co Ltd 増幅回路
US9014396B2 (en) * 2008-01-31 2015-04-21 Qualcomm Incorporated System and method of reducing click and pop noise in audio playback devices
CN102948029B (zh) * 2010-04-14 2017-02-15 航空环境公司 电动车辆的接地故障中断电路
TW201230575A (en) 2010-06-01 2012-07-16 Aerovironment Inc Utility ground detection
JP6360453B2 (ja) 2015-03-16 2018-07-18 株式会社東芝 電力増幅装置
CN108076417B (zh) * 2016-11-18 2020-09-01 扬智科技股份有限公司 输出级电路

Family Cites Families (16)

* 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
US4498020A (en) * 1981-10-19 1985-02-05 Texas Instruments Incorporated Current to frequency converter
IT1229860B (it) * 1988-11-09 1991-09-13 Sgs Thomson Microelectronics Amplificatore audio integrato con regolazione unificata delle funzioni di "mute" e "stand by" e dei transitori di commutazione.
IT1243920B (it) * 1990-11-20 1994-06-28 Sgs Thomson Microelectronics Amplificatore audio di potenza ad alta efficienza composto da due amplificatori con unica alimentazione.
EP0570655B1 (fr) * 1992-05-22 2000-12-27 STMicroelectronics S.r.l. Circuit de commande pour la communication marche/arrêt d'un amplificateur audio
EP0576770B1 (fr) * 1992-05-22 1999-12-22 STMicroelectronics S.r.l. Circuit de commande pour débrancher un amplificateur audio
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
US5828245A (en) * 1996-10-24 1998-10-27 Stmicroelectronics, Inc. Driver circuit including amplifier operated in a switching mode
EP0967719A1 (fr) * 1998-06-26 1999-12-29 STMicroelectronics S.r.l. Circuit de réduction des pics de commutation dans un filtre passe-bas à capacités commutées et filtre correspondant
US6636084B2 (en) * 1999-12-22 2003-10-21 Texas Instruments Incorporated Sample and hold circuit
US6346854B1 (en) * 2000-10-31 2002-02-12 National Semiconductor Corporation Amplifier circuit with reduced DC power related turn-on and turn-off transients
ITTO20010699A1 (it) * 2001-07-17 2003-01-17 St Microelectronics Srl Metodo e circuito di rilevamento di spostamenti tramite sensori micro-elettro-meccanici con compensazione di capacita' parassite e di movime
ITRM20010458A1 (it) * 2001-07-27 2003-01-27 St Microelectronics Srl Circuito amplificatore differenziale con regolazione di tensione di modo comune d'uscita.

Also Published As

Publication number Publication date
US7113031B2 (en) 2006-09-26
US20040196099A1 (en) 2004-10-07
FR2853472A1 (fr) 2004-10-08

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