HK47784A - Variable-gain differential amplifier - Google Patents

Variable-gain differential amplifier Download PDF

Info

Publication number
HK47784A
HK47784A HK477/84A HK47784A HK47784A HK 47784 A HK47784 A HK 47784A HK 477/84 A HK477/84 A HK 477/84A HK 47784 A HK47784 A HK 47784A HK 47784 A HK47784 A HK 47784A
Authority
HK
Hong Kong
Prior art keywords
transistors
pairs
pair
load resistors
variable
Prior art date
Application number
HK477/84A
Other languages
English (en)
Inventor
Rehfeldt Karl-Heinz
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of HK47784A publication Critical patent/HK47784A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/04—Modifications of control circuit to reduce distortion caused by control
    • 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
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements
    • H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements in emitter-coupled or cascode amplifiers

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
HK477/84A 1979-12-21 1984-06-07 Variable-gain differential amplifier HK47784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2951637A DE2951637C2 (de) 1979-12-21 1979-12-21 Einstellbarer Transistor-Differenzverstärker

Publications (1)

Publication Number Publication Date
HK47784A true HK47784A (en) 1984-06-15

Family

ID=6089214

Family Applications (1)

Application Number Title Priority Date Filing Date
HK477/84A HK47784A (en) 1979-12-21 1984-06-07 Variable-gain differential amplifier

Country Status (11)

Country Link
US (1) US4360786A (enExample)
JP (1) JPS5698918A (enExample)
AU (1) AU537711B2 (enExample)
CA (1) CA1149028A (enExample)
DE (1) DE2951637C2 (enExample)
ES (1) ES8200801A1 (enExample)
FR (1) FR2472303A1 (enExample)
GB (1) GB2066600B (enExample)
HK (1) HK47784A (enExample)
IT (1) IT1134789B (enExample)
SG (1) SG71783G (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0166973B1 (de) * 1984-06-07 1990-01-17 Siemens Aktiengesellschaft Differenzverstärkerschaltung
DE3522416A1 (de) * 1985-06-22 1987-01-02 Standard Elektrik Lorenz Ag Regelbare breitbandverstaerkerschaltung
US4695806A (en) * 1986-04-15 1987-09-22 Tektronix, Inc. Precision remotely-switched attenuator
US5157350A (en) * 1991-10-31 1992-10-20 Harvey Rubens Analog multipliers
FR2689705B1 (fr) * 1992-04-01 1994-06-10 Sgs Thomson Microelectronics Circuit amplificateur video a commande de gain et d'alignement.
US5717360A (en) * 1996-04-16 1998-02-10 National Semiconductor Corporation High speed variable gain amplifier
US5703524A (en) * 1996-04-16 1997-12-30 Exar Corporation Piece-wise linear approximation of a dB linear programmable gain amplifier
US6566949B1 (en) * 2000-08-31 2003-05-20 International Business Machines Corporation Highly linear high-speed transconductance amplifier for Gm-C filters

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504425A (enExample) * 1972-10-12 1975-01-17
DE2723750A1 (de) * 1977-05-26 1978-12-07 Philips Patentverwaltung Einstellbarer transistor-verstaerker

Also Published As

Publication number Publication date
CA1149028A (en) 1983-06-28
US4360786A (en) 1982-11-23
DE2951637A1 (de) 1981-07-02
FR2472303B1 (enExample) 1984-02-24
ES497946A0 (es) 1981-11-01
JPS6361803B2 (enExample) 1988-11-30
JPS5698918A (en) 1981-08-08
GB2066600B (en) 1983-09-21
SG71783G (en) 1984-08-03
DE2951637C2 (de) 1981-10-01
FR2472303A1 (fr) 1981-06-26
AU537711B2 (en) 1984-07-05
IT1134789B (it) 1986-08-13
IT8026758A0 (it) 1980-12-18
GB2066600A (en) 1981-07-08
AU6556280A (en) 1981-06-25
ES8200801A1 (es) 1981-11-01

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Legal Events

Date Code Title Description
PE Patent expired