JPS57202120A - Chopper type mos comparator - Google Patents

Chopper type mos comparator

Info

Publication number
JPS57202120A
JPS57202120A JP56087646A JP8764681A JPS57202120A JP S57202120 A JPS57202120 A JP S57202120A JP 56087646 A JP56087646 A JP 56087646A JP 8764681 A JP8764681 A JP 8764681A JP S57202120 A JPS57202120 A JP S57202120A
Authority
JP
Japan
Prior art keywords
switches
input terminal
switch
voltage
output
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
JP56087646A
Other languages
Japanese (ja)
Other versions
JPH0123008B2 (en
Inventor
Mitsuharu Kato
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP56087646A priority Critical patent/JPS57202120A/en
Publication of JPS57202120A publication Critical patent/JPS57202120A/en
Publication of JPH0123008B2 publication Critical patent/JPH0123008B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
    • H03K3/356—Bistable circuits
    • H03K3/3565—Bistables with hysteresis, e.g. Schmitt trigger

Landscapes

  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To provide the hysteresis characteristics, by changing a bias voltage in response to an output through the use of a differential amplifier. CONSTITUTION:A reference voltage Vr and an input voltage Vs are applied to a positive input terminal of a CMOS differential amplifier 20 through a capacitor 18 and switches 14 and 15 respectively. A negative input terminal of the amplifier 20 is grounded via a capacitor C and connected to the output terminal via a switch 11. Bias voltages V1 and V2 obtained from voltage dividing resistors 24 and 26 are inputted to the positive input terminal via switches 13 and 12 respectively. When a comparative operation is made by turning the switches 11, 12 and 14 off and turning the switch 15 on after the initial setting through the switches 11, 12 and 14, the switch 13 is closed or opened in accordance with an output V0 and the bias voltage of the positive input terminal is changed, then the hysteresis is caused.
JP56087646A 1981-06-08 1981-06-08 Chopper type mos comparator Granted JPS57202120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56087646A JPS57202120A (en) 1981-06-08 1981-06-08 Chopper type mos comparator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56087646A JPS57202120A (en) 1981-06-08 1981-06-08 Chopper type mos comparator

Publications (2)

Publication Number Publication Date
JPS57202120A true JPS57202120A (en) 1982-12-10
JPH0123008B2 JPH0123008B2 (en) 1989-04-28

Family

ID=13920735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56087646A Granted JPS57202120A (en) 1981-06-08 1981-06-08 Chopper type mos comparator

Country Status (1)

Country Link
JP (1) JPS57202120A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01245610A (en) * 1988-03-25 1989-09-29 Nec Corp Hysteresis comparator circuit
US8120388B2 (en) 2003-04-09 2012-02-21 Sony Corporation Comparator, sample-and-hold circuit, differential amplifier, two-stage amplifier, and analog-to-digital converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01245610A (en) * 1988-03-25 1989-09-29 Nec Corp Hysteresis comparator circuit
US8120388B2 (en) 2003-04-09 2012-02-21 Sony Corporation Comparator, sample-and-hold circuit, differential amplifier, two-stage amplifier, and analog-to-digital converter

Also Published As

Publication number Publication date
JPH0123008B2 (en) 1989-04-28

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