JPS6449317A - Analog switch driving circuit - Google Patents

Analog switch driving circuit

Info

Publication number
JPS6449317A
JPS6449317A JP62205027A JP20502787A JPS6449317A JP S6449317 A JPS6449317 A JP S6449317A JP 62205027 A JP62205027 A JP 62205027A JP 20502787 A JP20502787 A JP 20502787A JP S6449317 A JPS6449317 A JP S6449317A
Authority
JP
Japan
Prior art keywords
voltage
base
time
transistor
analog switch
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
JP62205027A
Other languages
Japanese (ja)
Inventor
Masami Tsuchida
Yoshimi Iso
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
Pioneer Corp
Original Assignee
Hitachi Ltd
Pioneer Electronic Corp
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, Pioneer Electronic Corp filed Critical Hitachi Ltd
Priority to JP62205027A priority Critical patent/JPS6449317A/en
Publication of JPS6449317A publication Critical patent/JPS6449317A/en
Pending legal-status Critical Current

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  • Electronic Switches (AREA)

Abstract

PURPOSE:To exactly compensate a DC offset at the time of a sample mode, by preventing a drift caused by the fluctuation of a temperature and a power source, etc., with respect to a base current at the time of ON of a bipolar transistor for constituting an analog switch for sample-hold, and fixing an emitter-base voltage at the time of OFF, to a prescribed voltage or below. CONSTITUTION:A constant-voltage power source part 11 is constituted of a constant-current source I1, transistors Q1-Q4, and resistances R3, R4. A switching means 12 constituted of a differential pair of transistors Q7, Q8 is brought to an ON/OFF control, based on a sample-hold pulse being a switch input. Also, a voltage limiter 13 for fixing a base voltage VB to a prescribed voltage or below at the time of OFF of a transistor Q is constituted of transistors Q5, Q6 and its base power source V1. In such a way, at the time of a sample mode, a base current IB at the time of ON of the transistor Q being an analog switch becomes a constant current without being influenced by a temperature characteristic and a voltage characteristic of a base-emitter voltage VBE. Also, a base voltage VB also becomes prescribed voltage determined by the base-emitter voltage VBE of the transistor Q.
JP62205027A 1987-08-20 1987-08-20 Analog switch driving circuit Pending JPS6449317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62205027A JPS6449317A (en) 1987-08-20 1987-08-20 Analog switch driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62205027A JPS6449317A (en) 1987-08-20 1987-08-20 Analog switch driving circuit

Publications (1)

Publication Number Publication Date
JPS6449317A true JPS6449317A (en) 1989-02-23

Family

ID=16500230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62205027A Pending JPS6449317A (en) 1987-08-20 1987-08-20 Analog switch driving circuit

Country Status (1)

Country Link
JP (1) JPS6449317A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2887710A1 (en) * 2005-06-28 2006-12-29 Atmel Grenoble Soc Par Actions DIFFERENTIAL PAUSE POWER SWITCH OF TRANSISTORS POWERED BY LOW VCC VOLTAGE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2887710A1 (en) * 2005-06-28 2006-12-29 Atmel Grenoble Soc Par Actions DIFFERENTIAL PAUSE POWER SWITCH OF TRANSISTORS POWERED BY LOW VCC VOLTAGE
WO2007000387A1 (en) * 2005-06-28 2007-01-04 E2V Semiconductors Current switch with differential transistor pairs fed by a low voltage

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