IT1134789B - Amplificatore differenziale a guadagno variabile - Google Patents

Amplificatore differenziale a guadagno variabile

Info

Publication number: IT1134789B
Authority: IT; Italy
Prior art keywords: differential amplifier; variable gain; gain differential; variable; amplifier
Prior art date: 1979-12-21

Application number

IT8026758A

Other languages

English (en)

Other versions

IT8026758A0 (it

Inventor

Karl Heinz Rehfeldt

Original Assignee

Philips Nv

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.)

1979-12-21

Filing date

1980-12-18

Publication date

1986-08-13

1980-12-18 Application filed by Philips Nv filed Critical Philips Nv

1980-12-18 Publication of IT8026758A0 publication Critical patent/IT8026758A0/it

1986-08-13 Application granted granted Critical

1986-08-13 Publication of IT1134789B publication Critical patent/IT1134789B/it

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 of the amplifier
- 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 of the amplifier in emitter-coupled or cascode amplifiers

IT8026758A 1979-12-21 1980-12-18 Amplificatore differenziale a guadagno variabile IT1134789B (it)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number	Publication Date
IT8026758A0 IT8026758A0 (it)	1980-12-18
IT1134789B true IT1134789B (it)	1986-08-13

Family

ID=6089214

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT8026758A IT1134789B (it)	1979-12-21	1980-12-18	Amplificatore differenziale a guadagno variabile

Country Status (11)

Country	Link
US (1)	US4360786A (it)
JP (1)	JPS5698918A (it)
AU (1)	AU537711B2 (it)
CA (1)	CA1149028A (it)
DE (1)	DE2951637C2 (it)
ES (1)	ES497946A0 (it)
FR (1)	FR2472303A1 (it)
GB (1)	GB2066600B (it)
HK (1)	HK47784A (it)
IT (1)	IT1134789B (it)
SG (1)	SG71783G (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ATE49687T1 (de) *	1984-06-07	1990-02-15	Siemens Ag	Differenzverstaerkerschaltung.
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 (it) *	1972-10-12	1975-01-17
DE2723750A1 (de) *	1977-05-26	1978-12-07	Philips Patentverwaltung	Einstellbarer transistor-verstaerker

1979
- 1979-12-21 DE DE2951637A patent/DE2951637C2/de not_active Expired
1980
- 1980-11-24 US US06/209,632 patent/US4360786A/en not_active Expired - Lifetime
- 1980-12-17 GB GB8040422A patent/GB2066600B/en not_active Expired
- 1980-12-17 FR FR8026792A patent/FR2472303A1/fr active Granted
- 1980-12-18 CA CA000367096A patent/CA1149028A/en not_active Expired
- 1980-12-18 IT IT8026758A patent/IT1134789B/it active
- 1980-12-19 AU AU65562/80A patent/AU537711B2/en not_active Ceased
- 1980-12-19 JP JP18029480A patent/JPS5698918A/ja active Granted
- 1980-12-19 ES ES497946A patent/ES497946A0/es active Granted
1983
- 1983-11-18 SG SG717/83A patent/SG71783G/en unknown
1984
- 1984-06-07 HK HK477/84A patent/HK47784A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
ES8200801A1 (es)	1981-11-01
DE2951637C2 (de)	1981-10-01
GB2066600A (en)	1981-07-08
AU537711B2 (en)	1984-07-05
HK47784A (en)	1984-06-15
CA1149028A (en)	1983-06-28
SG71783G (en)	1984-08-03
AU6556280A (en)	1981-06-25
JPS6361803B2 (it)	1988-11-30
IT8026758A0 (it)	1980-12-18
DE2951637A1 (de)	1981-07-02
GB2066600B (en)	1983-09-21
US4360786A (en)	1982-11-23
JPS5698918A (en)	1981-08-08
FR2472303B1 (it)	1984-02-24
ES497946A0 (es)	1981-11-01
FR2472303A1 (fr)	1981-06-26

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Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19960111