FR2789242B1 - Circuit d'amplification d'un signal et procede de neutralisation des bruits d'une tension d'alimentation - Google Patents

Circuit d'amplification d'un signal et procede de neutralisation des bruits d'une tension d'alimentation

Info

Publication number
FR2789242B1
FR2789242B1 FR9900946A FR9900946A FR2789242B1 FR 2789242 B1 FR2789242 B1 FR 2789242B1 FR 9900946 A FR9900946 A FR 9900946A FR 9900946 A FR9900946 A FR 9900946A FR 2789242 B1 FR2789242 B1 FR 2789242B1
Authority
FR
France
Prior art keywords
supply voltage
amplifier circuit
signal amplifier
neutralizing
noise
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
FR9900946A
Other languages
English (en)
Other versions
FR2789242A1 (fr
Inventor
Pascal Mellot
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 FR9900946A priority Critical patent/FR2789242B1/fr
Priority to US09/491,953 priority patent/US6842525B1/en
Publication of FR2789242A1 publication Critical patent/FR2789242A1/fr
Application granted granted Critical
Publication of FR2789242B1 publication Critical patent/FR2789242B1/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
    • H03F3/45—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/007—Protection circuits for transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/372—Noise reduction and elimination in amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)
FR9900946A 1999-01-28 1999-01-28 Circuit d'amplification d'un signal et procede de neutralisation des bruits d'une tension d'alimentation Expired - Fee Related FR2789242B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9900946A FR2789242B1 (fr) 1999-01-28 1999-01-28 Circuit d'amplification d'un signal et procede de neutralisation des bruits d'une tension d'alimentation
US09/491,953 US6842525B1 (en) 1999-01-28 2000-01-26 Signal amplification circuit and process for neutralizing noise from a power supply voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9900946A FR2789242B1 (fr) 1999-01-28 1999-01-28 Circuit d'amplification d'un signal et procede de neutralisation des bruits d'une tension d'alimentation

Publications (2)

Publication Number Publication Date
FR2789242A1 FR2789242A1 (fr) 2000-08-04
FR2789242B1 true FR2789242B1 (fr) 2001-06-01

Family

ID=9541315

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9900946A Expired - Fee Related FR2789242B1 (fr) 1999-01-28 1999-01-28 Circuit d'amplification d'un signal et procede de neutralisation des bruits d'une tension d'alimentation

Country Status (2)

Country Link
US (1) US6842525B1 (fr)
FR (1) FR2789242B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7978863B2 (en) * 2006-06-26 2011-07-12 Nokia Corporation Apparatus and method to provide advanced microphone bias
US8027489B1 (en) * 2006-07-07 2011-09-27 Analog Devices, Inc. Multi-voltage biasing system with over-voltage protection
US8288971B2 (en) * 2008-01-11 2012-10-16 Broadcom Corporation Integrated and programmable microphone bias generation
US8326255B2 (en) * 2008-09-24 2012-12-04 Sony Ericsson Mobile Communications Ab Biasing arrangement, electronic apparatus, biasing method, and computer program
US9331784B2 (en) * 2008-11-07 2016-05-03 International Business Machines Corporation Dynamic tunable low latency chromatic dispersion compensator
KR20130044576A (ko) * 2011-10-24 2013-05-03 한국전자통신연구원 음향 감지 회로 및 그것의 증폭 회로

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2734265B2 (ja) * 1991-12-12 1998-03-30 日本電気株式会社 エレクトレット・コンデンサ・マイクロフォン用増幅回路
US5543759A (en) * 1995-04-07 1996-08-06 Digital Lab Studios, Llc Audio amplification circuits

Also Published As

Publication number Publication date
FR2789242A1 (fr) 2000-08-04
US6842525B1 (en) 2005-01-11

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20091030