JPS5578612A - Semiconductor integrated circuit - Google Patents

Semiconductor integrated circuit

Info

Publication number
JPS5578612A
JPS5578612A JP15255278A JP15255278A JPS5578612A JP S5578612 A JPS5578612 A JP S5578612A JP 15255278 A JP15255278 A JP 15255278A JP 15255278 A JP15255278 A JP 15255278A JP S5578612 A JPS5578612 A JP S5578612A
Authority
JP
Japan
Prior art keywords
transistors
emitter
base
differential circuit
bias
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
JP15255278A
Other languages
Japanese (ja)
Inventor
Shoichi Shimizu
Kenichi Torii
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15255278A priority Critical patent/JPS5578612A/en
Publication of JPS5578612A publication Critical patent/JPS5578612A/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
    • H03F3/45—Differential amplifiers

Abstract

PURPOSE:To secure application of the DC bias while keeping a low impedance for the input end featuring the AC-type connection of the differential circuit consisting of the 1st and 2nd transistors by providing the emitter follower comprising the 3rd and 4th transistors to the differential circuit. CONSTITUTION:The emitters of 1st and 2nd transistors Q1 and Q2 are connected in common to be connected to constant current source I, and the collectors are connected to power source VCC via load resistances R1 and R2 each. Thus the differential circuit is formed. Then the emitter follower consisting of 3rd and 4th transistors Q4 and Q5 in which the base and collector are shared is provided to apply the bias to the differential circuit. And resistances R12 and R13 are connected to each emitter, and the bias is applied to the base via rsistances R8 and R9. At the same time, the base of transistor Q1 to function as signal input end IN is connected to the emitter of Q4 via coupling resistance R10, and the base of Q2 is connected directly to the emitter of Q5. In such way, the circuit is intergrated into one sheet of the semiconductor wafer.
JP15255278A 1978-12-09 1978-12-09 Semiconductor integrated circuit Pending JPS5578612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15255278A JPS5578612A (en) 1978-12-09 1978-12-09 Semiconductor integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15255278A JPS5578612A (en) 1978-12-09 1978-12-09 Semiconductor integrated circuit

Publications (1)

Publication Number Publication Date
JPS5578612A true JPS5578612A (en) 1980-06-13

Family

ID=15542951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15255278A Pending JPS5578612A (en) 1978-12-09 1978-12-09 Semiconductor integrated circuit

Country Status (1)

Country Link
JP (1) JPS5578612A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587444A (en) * 1982-07-13 1986-05-06 Fujitsu Limited Variable-threshold-type differential signal receiver
JPS61200710A (en) * 1985-03-01 1986-09-05 Toshiba Corp Differential amplifier
US4972159A (en) * 1988-08-29 1990-11-20 Sharp Kabushiki Kaisha Amplifier circuit more immune to fluctuation of reference voltage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587444A (en) * 1982-07-13 1986-05-06 Fujitsu Limited Variable-threshold-type differential signal receiver
JPS61200710A (en) * 1985-03-01 1986-09-05 Toshiba Corp Differential amplifier
US4972159A (en) * 1988-08-29 1990-11-20 Sharp Kabushiki Kaisha Amplifier circuit more immune to fluctuation of reference voltage

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