JPS57155810A - Negative feedback type amplifier - Google Patents

Negative feedback type amplifier

Info

Publication number
JPS57155810A
JPS57155810A JP56040322A JP4032281A JPS57155810A JP S57155810 A JPS57155810 A JP S57155810A JP 56040322 A JP56040322 A JP 56040322A JP 4032281 A JP4032281 A JP 4032281A JP S57155810 A JPS57155810 A JP S57155810A
Authority
JP
Japan
Prior art keywords
current
trs
base
circuit
flowing
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
JP56040322A
Other languages
Japanese (ja)
Other versions
JPH0363245B2 (en
Inventor
Tetsuo Sato
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 JP56040322A priority Critical patent/JPS57155810A/en
Publication of JPS57155810A publication Critical patent/JPS57155810A/en
Publication of JPH0363245B2 publication Critical patent/JPH0363245B2/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
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection

Landscapes

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

Abstract

PURPOSE:To avoid an input offset current and to achieve low noise, by providing a constant current circuit absorbing a base current of differential pair transistors (TR) to an input stage differential TR amplifying circuit. CONSTITUTION:A constant current circuit the same as that provided to a common emitter of differential pair TRs Q1 and Q2 is made of a TRQ8 and an emitter resistor R3. Denoting the emitter area ratio of TRs Q7 and Q8 as 2:1, a current flowing to the TRQ7 is 2I0, where a current flowing to the TRQ8 is I0. The constant current I0 flows to a TRQ5. A base current I1 inversely proportional to the current amplification factor flows from the base of a TRQ5. TRs Q9 and Q10 form a current Miller circuit and the base current of the TRs Q1 and Q2 is absorbed by flowing the base current I1 to a TRQ6.
JP56040322A 1981-03-23 1981-03-23 Negative feedback type amplifier Granted JPS57155810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56040322A JPS57155810A (en) 1981-03-23 1981-03-23 Negative feedback type amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56040322A JPS57155810A (en) 1981-03-23 1981-03-23 Negative feedback type amplifier

Publications (2)

Publication Number Publication Date
JPS57155810A true JPS57155810A (en) 1982-09-27
JPH0363245B2 JPH0363245B2 (en) 1991-09-30

Family

ID=12577366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56040322A Granted JPS57155810A (en) 1981-03-23 1981-03-23 Negative feedback type amplifier

Country Status (1)

Country Link
JP (1) JPS57155810A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592124A (en) * 1995-06-26 1997-01-07 Burr-Brown Corporation Integrated photodiode/transimpedance amplifier
US7868702B2 (en) 2006-09-27 2011-01-11 Sharp Kabushiki Kaisha Photoreceiver/amplifier circuit, optical pickup device, and optical disk device
US9356426B2 (en) 2013-03-27 2016-05-31 Seiko Epson Corporation Electronic device, quantum interference device, atomic oscillator, electronic apparatus, and moving object

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5521700A (en) * 1978-08-03 1980-02-15 Bosch Gmbh Robert Transistor amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5521700A (en) * 1978-08-03 1980-02-15 Bosch Gmbh Robert Transistor amplifier

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5592124A (en) * 1995-06-26 1997-01-07 Burr-Brown Corporation Integrated photodiode/transimpedance amplifier
US5767538A (en) * 1995-06-26 1998-06-16 Burr-Brown Corporation Integrated photodiode/transimpedance amplifier
US7868702B2 (en) 2006-09-27 2011-01-11 Sharp Kabushiki Kaisha Photoreceiver/amplifier circuit, optical pickup device, and optical disk device
US9356426B2 (en) 2013-03-27 2016-05-31 Seiko Epson Corporation Electronic device, quantum interference device, atomic oscillator, electronic apparatus, and moving object

Also Published As

Publication number Publication date
JPH0363245B2 (en) 1991-09-30

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