FR2422207A1 - Circuit electronique de multiplication et de division de signaux analogiques - Google Patents

Circuit electronique de multiplication et de division de signaux analogiques

Info

Publication number
FR2422207A1
FR2422207A1 FR7908047A FR7908047A FR2422207A1 FR 2422207 A1 FR2422207 A1 FR 2422207A1 FR 7908047 A FR7908047 A FR 7908047A FR 7908047 A FR7908047 A FR 7908047A FR 2422207 A1 FR2422207 A1 FR 2422207A1
Authority
FR
France
Prior art keywords
group
transistors
electronic circuit
emitter
multiplication
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.)
Granted
Application number
FR7908047A
Other languages
English (en)
Other versions
FR2422207B1 (fr
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.)
Raytheon Co
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Publication of FR2422207A1 publication Critical patent/FR2422207A1/fr
Application granted granted Critical
Publication of FR2422207B1 publication Critical patent/FR2422207B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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)
  • Amplifiers (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

L'invention concerne un circuit électronique de multiplication/division de signaux analogiques d'entrée. Il comporte un premier groupe de quatre transistors dont les jonctions base-émetteur sont connectées en série et un second groupe de quatre transistors dont la base et l'émetteur de chacun d'entre eux sont connectés à la base et à l'émetteur de l'un correspondant des transistors du premier groupe. Des résistances dont les valeurs dépendant des résistances ohmiques d'émetteurs des transistors du premier groupe sont connectées aux collecteurs des transistors du second groupe pour compenser les effets des résistances ohmiques d'emetteurs des transistors du premier groupe. L'invention s'applique notamment à des multiplicateurs-divideurs analogiques réalisés en circuits intégrés.
FR7908047A 1978-04-07 1979-03-30 Circuit electronique de multiplication et de division de signaux analogiques Granted FR2422207A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/894,459 US4247789A (en) 1978-04-07 1978-04-07 Electronic circuitry for multiplying/dividing analog input signals

Publications (2)

Publication Number Publication Date
FR2422207A1 true FR2422207A1 (fr) 1979-11-02
FR2422207B1 FR2422207B1 (fr) 1984-11-16

Family

ID=25403105

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7908047A Granted FR2422207A1 (fr) 1978-04-07 1979-03-30 Circuit electronique de multiplication et de division de signaux analogiques

Country Status (7)

Country Link
US (1) US4247789A (fr)
JP (1) JPS54145457A (fr)
CA (1) CA1113160A (fr)
DE (1) DE2911788C2 (fr)
FR (1) FR2422207A1 (fr)
GB (1) GB2019066B (fr)
IT (1) IT1116599B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4598215A (en) * 1983-11-03 1986-07-01 Motorola, Inc. Wide common mode range analog CMOS voltage comparator
GB2192465B (en) * 1986-07-12 1990-03-21 Marconi Instruments Ltd Signal measurement
US5055767A (en) * 1990-06-29 1991-10-08 Linear Technology Corporation Analog multiplier in the feedback loop of a switching regulator
US5570056A (en) * 1995-06-07 1996-10-29 Pacific Communication Sciences, Inc. Bipolar analog multipliers for low voltage applications
JP2956610B2 (ja) * 1996-08-30 1999-10-04 日本電気株式会社 電流乗算・割算回路
US6975658B1 (en) * 2002-06-13 2005-12-13 Linear Technology Corporation Gain normalization for automatic control of lightwave emitters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534245A (en) * 1949-11-30 1950-12-19 Searle & Co 8-haloxanthine salts of 3'-dialkylaminomethyl-4, 5, 6-trihydroxybenzo-(1, 2)-furan-1'-(3')-ones
GB1345156A (en) * 1971-05-28 1974-01-30 Dawnay Faulkner Associates Ltd Electronic analogue calculating circuits
US3805092A (en) * 1973-06-25 1974-04-16 Burr Brown Res Corp Electronic analog multiplier
US3935478A (en) * 1973-08-10 1976-01-27 Sony Corporation Non-linear amplifier

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004141A (en) * 1975-08-04 1977-01-18 Curtis Douglas R Linear/logarithmic analog multiplier
US4100433A (en) * 1977-01-04 1978-07-11 Motorola, Inc. Voltage to current converter circuit
US4157512A (en) * 1978-04-07 1979-06-05 Raytheon Company Electronic circuitry having transistor feedbacks and lead networks compensation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534245A (en) * 1949-11-30 1950-12-19 Searle & Co 8-haloxanthine salts of 3'-dialkylaminomethyl-4, 5, 6-trihydroxybenzo-(1, 2)-furan-1'-(3')-ones
GB1345156A (en) * 1971-05-28 1974-01-30 Dawnay Faulkner Associates Ltd Electronic analogue calculating circuits
US3805092A (en) * 1973-06-25 1974-04-16 Burr Brown Res Corp Electronic analog multiplier
US3935478A (en) * 1973-08-10 1976-01-27 Sony Corporation Non-linear amplifier

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS INTERNATIONAL, vol. 50, no. 25, décembre 1977, New York (US) *
IEEE TRANSACTIONS ON SOLID-STATE CIRCUITS, vol. SC-6, no. 13, juin 1971, New York (US) *

Also Published As

Publication number Publication date
DE2911788C2 (de) 1986-05-22
GB2019066A (en) 1979-10-24
DE2911788A1 (de) 1979-10-11
IT1116599B (it) 1986-02-10
IT7948630A0 (it) 1979-04-05
GB2019066B (en) 1983-02-23
FR2422207B1 (fr) 1984-11-16
US4247789A (en) 1981-01-27
CA1113160A (fr) 1981-11-24
JPS633353B2 (fr) 1988-01-22
JPS54145457A (en) 1979-11-13

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Legal Events

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