IT1025149B - Circuito dotato di un amplificatore a specchio di corrente a guadagno regolabile - Google Patents

Circuito dotato di un amplificatore a specchio di corrente a guadagno regolabile

Info

Publication number
IT1025149B
IT1025149B IT28727/74A IT2872774A IT1025149B IT 1025149 B IT1025149 B IT 1025149B IT 28727/74 A IT28727/74 A IT 28727/74A IT 2872774 A IT2872774 A IT 2872774A IT 1025149 B IT1025149 B IT 1025149B
Authority
IT
Italy
Prior art keywords
current mirror
adjustable gain
circuit equipped
gain current
mirror amplifier
Prior art date
Application number
IT28727/74A
Other languages
English (en)
Original Assignee
Rca Corp
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 Rca Corp filed Critical Rca Corp
Application granted granted Critical
Publication of IT1025149B publication Critical patent/IT1025149B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/265—Current mirrors using bipolar transistors only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
    • H03F3/347—DC amplifiers in which all stages are DC-coupled with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
    • H03F3/45183—Long tailed pairs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45594—Indexing scheme relating to differential amplifiers the IC comprising one or more resistors, which are not biasing resistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45646—Indexing scheme relating to differential amplifiers the LC comprising an extra current source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45674—Indexing scheme relating to differential amplifiers the LC comprising one current mirror
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45688—Indexing scheme relating to differential amplifiers the LC comprising one or more shunting potentiometers

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
IT28727/74A 1973-11-08 1974-10-23 Circuito dotato di un amplificatore a specchio di corrente a guadagno regolabile IT1025149B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US414164A US3873933A (en) 1973-11-08 1973-11-08 Circuit with adjustable gain current mirror amplifier

Publications (1)

Publication Number Publication Date
IT1025149B true IT1025149B (it) 1978-08-10

Family

ID=23640233

Family Applications (1)

Application Number Title Priority Date Filing Date
IT28727/74A IT1025149B (it) 1973-11-08 1974-10-23 Circuito dotato di un amplificatore a specchio di corrente a guadagno regolabile

Country Status (8)

Country Link
US (1) US3873933A (it)
JP (1) JPS5081249A (it)
CA (1) CA1033019A (it)
DE (1) DE2452445A1 (it)
FR (1) FR2251124B1 (it)
IT (1) IT1025149B (it)
NL (1) NL7414524A (it)
SE (1) SE7413987L (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606576B2 (ja) * 1979-09-20 1985-02-19 ソニー株式会社 信号変換回路
US4069431A (en) * 1976-12-22 1978-01-17 Rca Corporation Amplifier circuit
DE2707870C2 (de) * 1977-02-24 1983-04-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zur Verstärkungssteuerung
US4201947A (en) * 1978-02-10 1980-05-06 Rca Corporation Long-tailed-pair connections of MOSFET's operated in sub-threshold region
US4331929A (en) * 1979-04-04 1982-05-25 Nippon Gakki Seizo Kabushiki Kaisha Gain-controlled amplifier
US4389619A (en) * 1981-02-02 1983-06-21 Rca Corporation Adjustable-gain current amplifier for temperature-independent trimming
US4366444A (en) * 1981-02-02 1982-12-28 Rca Corporation Temperature-independent current trimming arrangement
JPS57178408A (en) * 1981-04-27 1982-11-02 Nec Corp Differential amplifying circuit
US4462002A (en) * 1982-05-24 1984-07-24 Rca Corporation Trimming circuits for precision amplifier
JPS5990412A (ja) * 1982-11-15 1984-05-24 Nec Corp 双方向性定電流駆動回路
IT1212748B (it) * 1983-06-03 1989-11-30 Ates Componenti Elettron Stadio differenziale perfezionato, in particolare per filtri attivi.
US4587442A (en) * 1983-12-01 1986-05-06 Motorola, Inc. Current threshold detector
US4687984A (en) * 1984-05-31 1987-08-18 Precision Monolithics, Inc. JFET active load input stage
US4901031A (en) * 1989-01-17 1990-02-13 Burr-Brown Corporation Common-base, source-driven differential amplifier
US6140872A (en) * 1999-10-28 2000-10-31 Burr-Brown Corporation Offset-compensated amplifier input stage and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2401404A (en) * 1942-08-29 1946-06-04 Rca Corp Electrical multiplying circuit
FR65574E (fr) * 1953-03-19 1956-02-28 Electronique & Automatisme Sa Traducteurs électriques de fonctions arbitraires
GB1158416A (en) * 1965-12-13 1969-07-16 Ibm Transistor Amplifier
US3509364A (en) * 1969-03-27 1970-04-28 Ibm Video amplifier particularly adapted for integrated circuit fabrication
US3701032A (en) * 1971-02-16 1972-10-24 Rca Corp Electronic signal amplifier
US3725673A (en) * 1971-08-16 1973-04-03 Motorola Inc Switching circuit with hysteresis
US3717821A (en) * 1972-02-11 1973-02-20 Rca Corp Circuit for minimizing the signal currents drawn by the input stage of an amplifier

Also Published As

Publication number Publication date
SE7413987L (it) 1975-05-09
CA1033019A (en) 1978-06-13
FR2251124A1 (it) 1975-06-06
US3873933A (en) 1975-03-25
DE2452445A1 (de) 1975-05-15
FR2251124B1 (it) 1978-05-05
JPS5081249A (it) 1975-07-01
NL7414524A (nl) 1975-05-12

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