JPS56141622A - Switching circuit - Google Patents

Switching circuit

Info

Publication number
JPS56141622A
JPS56141622A JP4488380A JP4488380A JPS56141622A JP S56141622 A JPS56141622 A JP S56141622A JP 4488380 A JP4488380 A JP 4488380A JP 4488380 A JP4488380 A JP 4488380A JP S56141622 A JPS56141622 A JP S56141622A
Authority
JP
Japan
Prior art keywords
fet
turned
source
control terminal
resistors
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
JP4488380A
Other languages
Japanese (ja)
Inventor
Fumio Hori
Takeshi Sato
Katsuhiko Higashiyama
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4488380A priority Critical patent/JPS56141622A/en
Publication of JPS56141622A publication Critical patent/JPS56141622A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To enable to use an analog switch combinedly for switching a signal of the audio amplifier by so forming that the offset voltage is made zero, in the analog switch for which a junction type FET has been used. CONSTITUTION:When the control terminal 3 is made in a floating state, the bias voltage is set to zero between gate and source of the FET Q2, and the FET Q2 is turned on. Accordingly, the gate and source of the FET Q1 are short-circuited, and the FET Q1 becomes conducting and is turned on. When a control current I is made to flow into the control terminal 3, the reverse voltage is generated across the resistors R1, R2, respectively, and the FET's Q1, Q2 are turned off. In this case, the control current I flows to ground through the resistors R1, R2 from the control terminal 3, therefore, no offset voltage is generated between source and ground of the FET Q1 which is operated as a switch.
JP4488380A 1980-04-04 1980-04-04 Switching circuit Pending JPS56141622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4488380A JPS56141622A (en) 1980-04-04 1980-04-04 Switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4488380A JPS56141622A (en) 1980-04-04 1980-04-04 Switching circuit

Publications (1)

Publication Number Publication Date
JPS56141622A true JPS56141622A (en) 1981-11-05

Family

ID=12703882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4488380A Pending JPS56141622A (en) 1980-04-04 1980-04-04 Switching circuit

Country Status (1)

Country Link
JP (1) JPS56141622A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939122A (en) * 1982-08-27 1984-03-03 Matsushita Electric Ind Co Ltd Switch circuit
JPH02252312A (en) * 1989-02-28 1990-10-11 Precision Monolithics Inc Jfet analog switch eqipped with gate current control
JP2010239466A (en) * 2009-03-31 2010-10-21 New Japan Radio Co Ltd Semiconductor integrated circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4637595Y1 (en) * 1967-02-18 1971-12-25
JPS4833537Y1 (en) * 1966-12-28 1973-10-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833537Y1 (en) * 1966-12-28 1973-10-12
JPS4637595Y1 (en) * 1967-02-18 1971-12-25

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939122A (en) * 1982-08-27 1984-03-03 Matsushita Electric Ind Co Ltd Switch circuit
JPH0374534B2 (en) * 1982-08-27 1991-11-27
JPH02252312A (en) * 1989-02-28 1990-10-11 Precision Monolithics Inc Jfet analog switch eqipped with gate current control
JP2010239466A (en) * 2009-03-31 2010-10-21 New Japan Radio Co Ltd Semiconductor integrated circuit

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