JPH01259618A - Window circuit - Google Patents

Window circuit

Info

Publication number
JPH01259618A
JPH01259618A JP8662088A JP8662088A JPH01259618A JP H01259618 A JPH01259618 A JP H01259618A JP 8662088 A JP8662088 A JP 8662088A JP 8662088 A JP8662088 A JP 8662088A JP H01259618 A JPH01259618 A JP H01259618A
Authority
JP
Japan
Prior art keywords
transistors
circuit
area
potential
extremely low
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
JP8662088A
Other languages
Japanese (ja)
Other versions
JP2656297B2 (en
Inventor
Hisao Kuwabara
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP8662088A priority Critical patent/JP2656297B2/en
Publication of JPH01259618A publication Critical patent/JPH01259618A/en
Application granted granted Critical
Publication of JP2656297B2 publication Critical patent/JP2656297B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To narrow a window width by a simple means and to obtain a window circuit capable of extremely low voltage operation by using the emitter area ratios of transistors for the threshold level of each discrimination circuit.
CONSTITUTION: As upper limit and lower limit setting circuits 11 and 12 to detect a first set potential in the direction of the increase of an input voltage and a second potential in the direction of its decrease respectively, the transistors whose emitter area ratios are different are combined in parallel in each circuit and the outputs of large-area transistors Q1 and Q3 are given to the output nodes of small-area transistors Q2 and Q4 by a current mirror circuit. Output circuits having a common load circuit are connected respectively to the output nodes of the small-area transistors Q2 and Q4. Thus, the window width can be narrowed by the simple means and the extremely low voltage operation can be performed.
COPYRIGHT: (C)1989,JPO&Japio
JP8662088A 1988-04-08 1988-04-08 Wind circuit Expired - Lifetime JP2656297B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8662088A JP2656297B2 (en) 1988-04-08 1988-04-08 Wind circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8662088A JP2656297B2 (en) 1988-04-08 1988-04-08 Wind circuit

Publications (2)

Publication Number Publication Date
JPH01259618A true JPH01259618A (en) 1989-10-17
JP2656297B2 JP2656297B2 (en) 1997-09-24

Family

ID=13892066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8662088A Expired - Lifetime JP2656297B2 (en) 1988-04-08 1988-04-08 Wind circuit

Country Status (1)

Country Link
JP (1) JP2656297B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012124858A (en) * 2010-12-10 2012-06-28 Asahi Kasei Electronics Co Ltd Multi-input differential amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012124858A (en) * 2010-12-10 2012-06-28 Asahi Kasei Electronics Co Ltd Multi-input differential amplifier

Also Published As

Publication number Publication date
JP2656297B2 (en) 1997-09-24

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