JPS55679A - Differential amplifier circuit - Google Patents

Differential amplifier circuit

Info

Publication number
JPS55679A
JPS55679A JP1227679A JP1227679A JPS55679A JP S55679 A JPS55679 A JP S55679A JP 1227679 A JP1227679 A JP 1227679A JP 1227679 A JP1227679 A JP 1227679A JP S55679 A JPS55679 A JP S55679A
Authority
JP
Japan
Prior art keywords
amplifier circuit
differential amplifier
collectors
transistor
transistors
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
JP1227679A
Other languages
Japanese (ja)
Other versions
JPS6123892B2 (en
Inventor
Kenji Kaneko
Takahiro Okabe
Toru Nakamura
Kazuo Takasugi
Minoru Nagata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1227679A priority Critical patent/JPS55679A/en
Publication of JPS55679A publication Critical patent/JPS55679A/en
Publication of JPS6123892B2 publication Critical patent/JPS6123892B2/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

Landscapes

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

Abstract

PURPOSE:To form a differential amplifier circuit which features the simplified circuit constitution and the reduced occupied area in the semiconductor chip. CONSTITUTION:The differential amplifier circuit contains the 1st, 2nd and 3rd reverse NPN-type transistors Q1, Q2 and Q5 each which possess the multi-collectors. Either one of multi-collectors C11, C21 and C51 is connected to the base, and transistor Q1 and Q2 are used as the differential input transistors. Then collectors C12 and C22 of transistors Q1 and Q2 plus the base of Q5 are connected to PNP-type transistor Q3 and Q4 which are to be the load current. And the differential output is drawn out from collector C52 of transistor Q5.
JP1227679A 1979-02-07 1979-02-07 Differential amplifier circuit Granted JPS55679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1227679A JPS55679A (en) 1979-02-07 1979-02-07 Differential amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1227679A JPS55679A (en) 1979-02-07 1979-02-07 Differential amplifier circuit

Publications (2)

Publication Number Publication Date
JPS55679A true JPS55679A (en) 1980-01-07
JPS6123892B2 JPS6123892B2 (en) 1986-06-07

Family

ID=11800833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1227679A Granted JPS55679A (en) 1979-02-07 1979-02-07 Differential amplifier circuit

Country Status (1)

Country Link
JP (1) JPS55679A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058423U (en) * 1991-07-17 1993-02-05 矢崎総業株式会社 Taximeter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01119589U (en) * 1988-02-05 1989-08-14

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939352A (en) * 1972-07-11 1974-04-12
JPS4984348A (en) * 1972-11-24 1974-08-13
JPS5255346A (en) * 1975-10-31 1977-05-06 Hitachi Ltd Semiconductor integrated circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4939352A (en) * 1972-07-11 1974-04-12
JPS4984348A (en) * 1972-11-24 1974-08-13
JPS5255346A (en) * 1975-10-31 1977-05-06 Hitachi Ltd Semiconductor integrated circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH058423U (en) * 1991-07-17 1993-02-05 矢崎総業株式会社 Taximeter

Also Published As

Publication number Publication date
JPS6123892B2 (en) 1986-06-07

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