DE69113844T2 - Rauscharme Verstärker mit hoher Eingangsimpedanz, insbesondere für Mikrophone. - Google Patents

Rauscharme Verstärker mit hoher Eingangsimpedanz, insbesondere für Mikrophone.

Info

Publication number
DE69113844T2
DE69113844T2 DE69113844T DE69113844T DE69113844T2 DE 69113844 T2 DE69113844 T2 DE 69113844T2 DE 69113844 T DE69113844 T DE 69113844T DE 69113844 T DE69113844 T DE 69113844T DE 69113844 T2 DE69113844 T2 DE 69113844T2
Authority
DE
Germany
Prior art keywords
microphones
low noise
noise amplifier
input impedance
high input
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
DE69113844T
Other languages
English (en)
Other versions
DE69113844D1 (de
Inventor
Sergio Pernici
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 SRL
Original Assignee
SGS Thomson Microelectronics SRL
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 SGS Thomson Microelectronics SRL filed Critical SGS Thomson Microelectronics SRL
Publication of DE69113844D1 publication Critical patent/DE69113844D1/de
Application granted granted Critical
Publication of DE69113844T2 publication Critical patent/DE69113844T2/de
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
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/265—Push-pull amplifiers; Phase-splitters therefor with field-effect transistors only
    • 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)
  • Amplifiers (AREA)
DE69113844T 1990-03-22 1991-02-18 Rauscharme Verstärker mit hoher Eingangsimpedanz, insbesondere für Mikrophone. Expired - Fee Related DE69113844T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19769A IT1239899B (it) 1990-03-22 1990-03-22 Amplificatore a basso rumore e alta impedenza d'ingresso, particolarmente per microfoni

Publications (2)

Publication Number Publication Date
DE69113844D1 DE69113844D1 (de) 1995-11-23
DE69113844T2 true DE69113844T2 (de) 1996-06-20

Family

ID=11161075

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69113844T Expired - Fee Related DE69113844T2 (de) 1990-03-22 1991-02-18 Rauscharme Verstärker mit hoher Eingangsimpedanz, insbesondere für Mikrophone.

Country Status (5)

Country Link
US (2) US5170133A (de)
EP (1) EP0448951B1 (de)
JP (1) JPH0563466A (de)
DE (1) DE69113844T2 (de)
IT (1) IT1239899B (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384501A (en) * 1990-06-15 1995-01-24 Kabushiki Kaisha Toshiba Integration circuit including a differential amplifier having a variable transconductance
DE69220770T3 (de) † 1991-07-23 2004-09-30 The Procter & Gamble Company, Cincinnati Befestigungsmuster für absorbierende artikel
DE19528865C1 (de) * 1995-08-05 1996-08-08 Telefunken Microelectron Schaltungsanordnung mit einer Verstärkerstufe
US5614424A (en) * 1996-01-16 1997-03-25 Taiwan Semiconductor Manufacturing Company Ltd. Method for fabricating an accumulated-base bipolar junction transistor
FR2756680B1 (fr) * 1996-11-29 1999-02-12 Sgs Thomson Microelectronics Amplificateur a transconductance a dynamique elevee et faible bruit
JPH11154835A (ja) * 1997-11-21 1999-06-08 Seiko Instruments Inc 差動増幅器
JP4227679B2 (ja) * 1998-05-07 2009-02-18 株式会社オーディオテクニカ インピーダンス変換器
US6285259B1 (en) * 1999-04-21 2001-09-04 Infineon Technologies North America Corp. System and method for converting from single-ended to differential signals
US6118340A (en) * 1999-07-26 2000-09-12 Burr-Brown Corporation Low noise differential input, differential output amplifier and method
US7811272B2 (en) * 2003-12-29 2010-10-12 Kimberly-Clark Worldwide, Inc. Nanofabricated gecko-like fasteners with adhesive hairs for disposable absorbent articles
US7602246B2 (en) * 2004-06-02 2009-10-13 Qualcomm, Incorporated General-purpose wideband amplifier
TWI275243B (en) * 2005-09-14 2007-03-01 Princeton Technology Corp Voltage controlled amplifier for a signal processing system
DE102006015983B4 (de) * 2006-04-05 2011-04-07 Xignal Technologies Ag Verstärkerschaltung und integrierte Schaltungsanordnung
TW200906055A (en) * 2007-07-27 2009-02-01 Rafael Microelectronics Inc Low noise amplify
DE102009011549B4 (de) * 2009-03-06 2018-01-18 Atmel Corp. Schaltung und Verfahren zur Spiegelfrequenzunterdrückung
US7911276B1 (en) * 2009-10-29 2011-03-22 Stmicroelectronics Design And Application Gmbh Transconductor circuit
US8378735B2 (en) * 2010-11-29 2013-02-19 Freescale Semiconductor, Inc. Die temperature sensor circuit
WO2013102499A1 (en) * 2012-01-05 2013-07-11 Epcos Ag Differential microphone and method for driving a differential microphone
JP2015115881A (ja) * 2013-12-13 2015-06-22 株式会社東芝 差動増幅回路およびマイクアンプシステム
CN107925823A (zh) * 2015-07-12 2018-04-17 怀斯迪斯匹有限公司 超低功率超低噪声传声器

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2002980B (en) * 1977-07-11 1982-01-13 Secr Defence Igfet circuits
US4233474A (en) * 1978-01-10 1980-11-11 Nippon Electric Co., Ltd. Telephone transmitter amplifier
JPS5710598A (en) * 1980-06-20 1982-01-20 Sony Corp Transmitting circuit of microphone output
US4374363A (en) * 1980-11-03 1983-02-15 Previti Frank R Balanced impedance coupler
AT377873B (de) * 1981-10-22 1985-05-10 Akg Akustische Kino Geraete Impedanzwandlerschaltung fuer kapazitive spannungsquellen
US4473794A (en) * 1982-04-21 1984-09-25 At&T Bell Laboratories Current repeater
US4629910A (en) * 1982-04-21 1986-12-16 At&T Bell Laboratories High input impedance circuit
JPS615142U (ja) * 1984-06-18 1986-01-13 日本ビクター株式会社 収納机
JPS6315519A (ja) * 1986-07-08 1988-01-22 Fujitsu Ltd インタ−フエイス回路
US4833422A (en) * 1987-09-24 1989-05-23 Burr-Brown Corporation Programmable gain instrumentation amplifier
JPH0531946Y2 (de) * 1988-03-08 1993-08-17
JPH01155838U (de) * 1988-04-18 1989-10-26
JPH0542748Y2 (de) * 1988-04-22 1993-10-27
US5036536A (en) * 1990-02-20 1991-07-30 Plantronics, Inc. Electret microphone transmitter for use in telephone circuits

Also Published As

Publication number Publication date
EP0448951A2 (de) 1991-10-02
IT9019769A1 (it) 1991-09-22
EP0448951B1 (de) 1995-10-18
JPH0563466A (ja) 1993-03-12
DE69113844D1 (de) 1995-11-23
IT1239899B (it) 1993-11-23
IT9019769A0 (it) 1990-03-22
EP0448951A3 (en) 1992-03-04
US5170133A (en) 1992-12-08
US5489876A (en) 1996-02-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee