JPS5733810A - Differential amplifier - Google Patents

Differential amplifier

Info

Publication number
JPS5733810A
JPS5733810A JP10851880A JP10851880A JPS5733810A JP S5733810 A JPS5733810 A JP S5733810A JP 10851880 A JP10851880 A JP 10851880A JP 10851880 A JP10851880 A JP 10851880A JP S5733810 A JPS5733810 A JP S5733810A
Authority
JP
Japan
Prior art keywords
voltage
amplification stage
differential amplification
constant
fet13
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
JP10851880A
Other languages
Japanese (ja)
Other versions
JPH0143483B2 (en
Inventor
Tatsuji Asakawa
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP10851880A priority Critical patent/JPS5733810A/en
Publication of JPS5733810A publication Critical patent/JPS5733810A/en
Publication of JPH0143483B2 publication Critical patent/JPH0143483B2/ja
Granted legal-status Critical Current

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
    • H03F3/45179—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
    • H03F2203/45456—Indexing scheme relating to differential amplifiers the CSC comprising bias stabilisation means, e.g. DC-level stability, positive or negative temperature coefficient dependent control
    • 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
    • H03F2203/45508—Indexing scheme relating to differential amplifiers the CSC comprising a voltage generating circuit as bias circuit for the CSC
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To improve electrical characteristics and to expand an operating voltage range of a differential amplifier, by constituting so that effective gate voltage of a constant-current source transistor of the differential amplification stage is made constant voltage having no predetermined power supply voltage dependence, or its nearby voltage. CONSTITUTION:A differential amplification stage is constituted of insulation gate type FETs 14-16, and to this differential amplification stage is connected in series the FET13 of a constant-current source. Moreover, as a biasing circuit of this FET13 is provided a series circuit consisting of a circuit part 22 having no voltage dependence, and an FET23 which has the same polarity as the FET13 of the constant-current source of the differential amplification stage, has been connected in common between the gate and the drain, and has a large coefficient of conductance. By this biasing circuit, a current from a current source 21 is supplied to the FET13. Subsequently, voltage of the sum of threshold voltage of the FET23 and predetermined constant voltage of the circuit part 22 is generated, by which the electrical characteristics of the differential amplification stage are improved, and an operating voltage range is expanded.
JP10851880A 1980-08-07 1980-08-07 Differential amplifier Granted JPS5733810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10851880A JPS5733810A (en) 1980-08-07 1980-08-07 Differential amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10851880A JPS5733810A (en) 1980-08-07 1980-08-07 Differential amplifier

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP5892089A Division JPH01272212A (en) 1989-03-10 1989-03-10 Differential amplifier

Publications (2)

Publication Number Publication Date
JPS5733810A true JPS5733810A (en) 1982-02-24
JPH0143483B2 JPH0143483B2 (en) 1989-09-21

Family

ID=14486820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10851880A Granted JPS5733810A (en) 1980-08-07 1980-08-07 Differential amplifier

Country Status (1)

Country Link
JP (1) JPS5733810A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093644A2 (en) * 1982-04-26 1983-11-09 Nippon Telegraph And Telephone Corporation Switched capacitor circuit
JPH01272212A (en) * 1989-03-10 1989-10-31 Seiko Epson Corp Differential amplifier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342624A (en) * 1976-09-30 1978-04-18 Matsushita Electronics Corp Fluorescent display unit
JPS53135555A (en) * 1977-04-30 1978-11-27 Toshiba Corp Operational amplifier circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342624A (en) * 1976-09-30 1978-04-18 Matsushita Electronics Corp Fluorescent display unit
JPS53135555A (en) * 1977-04-30 1978-11-27 Toshiba Corp Operational amplifier circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093644A2 (en) * 1982-04-26 1983-11-09 Nippon Telegraph And Telephone Corporation Switched capacitor circuit
EP0275590A2 (en) * 1982-04-26 1988-07-27 Nippon Telegraph And Telephone Corporation Switched capacitor circuit
JPH01272212A (en) * 1989-03-10 1989-10-31 Seiko Epson Corp Differential amplifier

Also Published As

Publication number Publication date
JPH0143483B2 (en) 1989-09-21

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