JPS5672507A - Current source circuit - Google Patents

Current source circuit

Info

Publication number
JPS5672507A
JPS5672507A JP14982879A JP14982879A JPS5672507A JP S5672507 A JPS5672507 A JP S5672507A JP 14982879 A JP14982879 A JP 14982879A JP 14982879 A JP14982879 A JP 14982879A JP S5672507 A JPS5672507 A JP S5672507A
Authority
JP
Japan
Prior art keywords
terminal
current source
output
operates
sense amplifier
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.)
Pending
Application number
JP14982879A
Other languages
Japanese (ja)
Inventor
Kiyuuichi Haruyama
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14982879A priority Critical patent/JPS5672507A/en
Publication of JPS5672507A publication Critical patent/JPS5672507A/en
Pending 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
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Electrical Variables (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To obtain a constant-current source circuit whose output impedance is large enough, by means of the monolithic structure, by constituting so that the amplifying element which operates as a current source by the feedback bias loop can be biased stably. CONSTITUTION:The transistor TR1 which has been biased 5 by the voltage source 15 operates as a constant-current source, and its output is applied to the base of TR2 which operates as a sense amplifier, through the terminal 9. The output of the TR2 is led into the power supply terminal 8 through the resistor 4 from the output terminal 10 of the sense amplifier. The sense amplifier output terminal 10 is connected to the base of TR3, the emitter of TR3 is connected to the collector of TR1 through the terminal 9, and the feedback bias loop is formed. The collector of TR3 is connected to the output terminal 6 of the circuit, and the terminal 9 is biased stably against the voltage variation of the terminal 6.
JP14982879A 1979-11-19 1979-11-19 Current source circuit Pending JPS5672507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14982879A JPS5672507A (en) 1979-11-19 1979-11-19 Current source circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14982879A JPS5672507A (en) 1979-11-19 1979-11-19 Current source circuit

Publications (1)

Publication Number Publication Date
JPS5672507A true JPS5672507A (en) 1981-06-16

Family

ID=15483560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14982879A Pending JPS5672507A (en) 1979-11-19 1979-11-19 Current source circuit

Country Status (1)

Country Link
JP (1) JPS5672507A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972210A (en) * 1982-10-18 1984-04-24 Nec Corp Differential amplifying circuit
JPS6374323A (en) * 1986-09-18 1988-04-04 Yokogawa Electric Corp Current source circuit
JPH02224410A (en) * 1988-12-22 1990-09-06 Delco Electron Corp Low distortion current mirror circuit
JPH05206859A (en) * 1992-03-31 1993-08-13 Nec Corp Field-effect transistor circuit
JPH08293796A (en) * 1995-04-21 1996-11-05 Nec Ic Microcomput Syst Ltd Digital/analog converter
JP2010171533A (en) * 2009-01-20 2010-08-05 Mitsubishi Electric Corp Current mode ad converter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972210A (en) * 1982-10-18 1984-04-24 Nec Corp Differential amplifying circuit
JPS6374323A (en) * 1986-09-18 1988-04-04 Yokogawa Electric Corp Current source circuit
JPH02224410A (en) * 1988-12-22 1990-09-06 Delco Electron Corp Low distortion current mirror circuit
JPH05206859A (en) * 1992-03-31 1993-08-13 Nec Corp Field-effect transistor circuit
JPH08293796A (en) * 1995-04-21 1996-11-05 Nec Ic Microcomput Syst Ltd Digital/analog converter
JP2010171533A (en) * 2009-01-20 2010-08-05 Mitsubishi Electric Corp Current mode ad converter

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