DE2409340C2 - Logarithmische Verstärkerschaltungsanordnung - Google Patents

Logarithmische Verstärkerschaltungsanordnung

Info

Publication number
DE2409340C2
DE2409340C2 DE2409340A DE2409340A DE2409340C2 DE 2409340 C2 DE2409340 C2 DE 2409340C2 DE 2409340 A DE2409340 A DE 2409340A DE 2409340 A DE2409340 A DE 2409340A DE 2409340 C2 DE2409340 C2 DE 2409340C2
Authority
DE
Germany
Prior art keywords
input
amplifier
logarithmic
circuit arrangement
transistor
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
Application number
DE2409340A
Other languages
German (de)
English (en)
Other versions
DE2409340A1 (de
Inventor
Claude Asnieres Claverie
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of DE2409340A1 publication Critical patent/DE2409340A1/de
Application granted granted Critical
Publication of DE2409340C2 publication Critical patent/DE2409340C2/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
DE2409340A 1973-02-27 1974-02-27 Logarithmische Verstärkerschaltungsanordnung Expired DE2409340C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7306904A FR2220925B1 (enExample) 1973-02-27 1973-02-27

Publications (2)

Publication Number Publication Date
DE2409340A1 DE2409340A1 (de) 1974-08-29
DE2409340C2 true DE2409340C2 (de) 1983-01-20

Family

ID=9115466

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2409340A Expired DE2409340C2 (de) 1973-02-27 1974-02-27 Logarithmische Verstärkerschaltungsanordnung

Country Status (6)

Country Link
US (1) US3921008A (enExample)
JP (1) JPS5717373B2 (enExample)
DE (1) DE2409340C2 (enExample)
FR (1) FR2220925B1 (enExample)
GB (1) GB1437565A (enExample)
NL (1) NL174996C (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503739A1 (de) * 1984-02-10 1985-09-19 Elscint Ltd., Haifa Digitale fluorographische einrichtung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349755A (en) * 1980-02-11 1982-09-14 National Semiconductor Corporation Current product limit detector
US4535256A (en) * 1983-04-26 1985-08-13 Zenith Electronics Corporation Integrated video amp with common base lateral PNP transistor
US4536663A (en) * 1983-07-01 1985-08-20 Motorola, Inc. Comparator circuit having full supply common mode input
US4716316A (en) * 1985-02-04 1987-12-29 Varian Associates, Inc. Full wave, self-detecting differential logarithmic rf amplifier
JPH0748624B2 (ja) * 1988-06-20 1995-05-24 三菱電機株式会社 対数増幅器
JPH0671186B2 (ja) * 1990-01-19 1994-09-07 株式会社東芝 対数増幅回路
US5414313A (en) * 1993-02-10 1995-05-09 Watkins Johnson Company Dual-mode logarithmic amplifier having cascaded stages
WO2001063747A1 (en) * 2000-02-25 2001-08-30 Telefonaktiebolaget Lm Ericsson (Publ) Photodiode bias circuit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237028A (en) * 1963-02-21 1966-02-22 James F Gibbons Logarithmic transfer circuit
US3369128A (en) * 1964-02-10 1968-02-13 Nexus Res Lab Inc Logarithmic function generator
US3417263A (en) * 1965-03-18 1968-12-17 Ansitron Inc Logarithmic amplifier
US3448289A (en) * 1966-05-20 1969-06-03 Us Navy Logarthmic amplifier
US3584232A (en) * 1969-01-21 1971-06-08 Bell Telephone Labor Inc Precision logarithmic converter
US3624409A (en) * 1970-09-03 1971-11-30 Hewlett Packard Co Logarithmic converter
US3790819A (en) * 1972-03-17 1974-02-05 Perkin Elmer Corp Log amplifier apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503739A1 (de) * 1984-02-10 1985-09-19 Elscint Ltd., Haifa Digitale fluorographische einrichtung

Also Published As

Publication number Publication date
GB1437565A (en) 1976-05-26
NL7402433A (enExample) 1974-08-29
FR2220925A1 (enExample) 1974-10-04
NL174996C (nl) 1984-09-03
JPS502848A (enExample) 1975-01-13
FR2220925B1 (enExample) 1976-04-30
JPS5717373B2 (enExample) 1982-04-10
DE2409340A1 (de) 1974-08-29
US3921008A (en) 1975-11-18

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Legal Events

Date Code Title Description
OD Request for examination
D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee