JPS56168413A - Multisignal amplifier - Google Patents

Multisignal amplifier

Info

Publication number
JPS56168413A
JPS56168413A JP7145780A JP7145780A JPS56168413A JP S56168413 A JPS56168413 A JP S56168413A JP 7145780 A JP7145780 A JP 7145780A JP 7145780 A JP7145780 A JP 7145780A JP S56168413 A JPS56168413 A JP S56168413A
Authority
JP
Japan
Prior art keywords
resistor
vouta
transistor
control
controlling
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
JP7145780A
Other languages
Japanese (ja)
Inventor
Masao Horii
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 JP7145780A priority Critical patent/JPS56168413A/en
Publication of JPS56168413A publication Critical patent/JPS56168413A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
    • H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To realize a simultaneous control for gains of plural differential amplifiers, by connecting the 1st and 2nd bias controlling variable resistors to the base circuit of a transistor of one side of a differential amplifier and to a common base circuit respectively. CONSTITUTION:A variable resistor 6 is controlled to increase the base potential of a transistor TR2, and accordingly the output signal VoutA reduces. While the signal VoutA increases by increasing the base potential of a TR1 by controlling a variable resistor 5. The bases of the TR1 and TR3 are connected to a control circuit comprises a resistance 8, a resistor 5 and a bias capacitor 21. The input signals VinA and VinB are controlled simultaneously for their amplification factors through a control of the resistor 5. Thus signals VoutA and VoutB are obtained at output terminals 19 and 20.
JP7145780A 1980-05-30 1980-05-30 Multisignal amplifier Pending JPS56168413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7145780A JPS56168413A (en) 1980-05-30 1980-05-30 Multisignal amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7145780A JPS56168413A (en) 1980-05-30 1980-05-30 Multisignal amplifier

Publications (1)

Publication Number Publication Date
JPS56168413A true JPS56168413A (en) 1981-12-24

Family

ID=13461116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7145780A Pending JPS56168413A (en) 1980-05-30 1980-05-30 Multisignal amplifier

Country Status (1)

Country Link
JP (1) JPS56168413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010058247A1 (en) * 2008-11-24 2010-05-27 Freescale Semiconductor, Inc. Frequency multiplier circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010058247A1 (en) * 2008-11-24 2010-05-27 Freescale Semiconductor, Inc. Frequency multiplier circuit
US8330506B2 (en) 2008-11-24 2012-12-11 Freescale Semiconductor, Inc. Frequency multiplier circuit

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