JPS5511626A - Voltage comparator circuit - Google Patents

Voltage comparator circuit

Info

Publication number
JPS5511626A
JPS5511626A JP8398778A JP8398778A JPS5511626A JP S5511626 A JPS5511626 A JP S5511626A JP 8398778 A JP8398778 A JP 8398778A JP 8398778 A JP8398778 A JP 8398778A JP S5511626 A JPS5511626 A JP S5511626A
Authority
JP
Japan
Prior art keywords
capacitor
turned
voltage
terminal
fet 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.)
Granted
Application number
JP8398778A
Other languages
Japanese (ja)
Other versions
JPS6019848B2 (en
Inventor
Kazuo Kato
Nobuaki Miyagawa
Takashi Sase
Kiyoshi Matsubara
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 JP8398778A priority Critical patent/JPS6019848B2/en
Publication of JPS5511626A publication Critical patent/JPS5511626A/en
Publication of JPS6019848B2 publication Critical patent/JPS6019848B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16519—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using FET's

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To obtain a high-performance voltage comparator circuit by providing the capacitor to the input side of the gate amplifier used for the digital logic and then correcting the threshold level proper to the gate amplifier via the capacitor. CONSTITUTION:FET switch 41 is turned on while the pulse voltage is being applied to control terminal 601, and the voltage of one terminal 350 of capacitor 35 becomes zero. At the same time, FET switch 17 is turned on with FET switch 16 turned off, and capacitor 35 features the reference earth potential. On the other hand, FET switch 42 is turned on, and the current flows to capacitor 35 from constant current circuit 70 to begine charging. When the charging proceeds and the voltage of terminal 350 reaches thrshold voltage Vth of gate amplifier 300, switches 42 and 17 are turned off with switch 16 turned on. And capacitor 35 is connected to input terminal 10. Accordingly, the output of amplifier 300 features the accurate variation based on the scale of the reference level of the signal voltage applied to input terminal 10, and the rectangular wave is obtained at output terminal 200 in the form of the voltage comparator output based on the reference level of OV.
JP8398778A 1978-07-12 1978-07-12 voltage comparison circuit Expired JPS6019848B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8398778A JPS6019848B2 (en) 1978-07-12 1978-07-12 voltage comparison circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8398778A JPS6019848B2 (en) 1978-07-12 1978-07-12 voltage comparison circuit

Publications (2)

Publication Number Publication Date
JPS5511626A true JPS5511626A (en) 1980-01-26
JPS6019848B2 JPS6019848B2 (en) 1985-05-18

Family

ID=13817880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8398778A Expired JPS6019848B2 (en) 1978-07-12 1978-07-12 voltage comparison circuit

Country Status (1)

Country Link
JP (1) JPS6019848B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655496A1 (en) * 1989-12-05 1991-06-07 Sgs Thomson Microelectronics THRESHOLD COMPARATOR IMMUNIZED AGAINST NOISE.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655496A1 (en) * 1989-12-05 1991-06-07 Sgs Thomson Microelectronics THRESHOLD COMPARATOR IMMUNIZED AGAINST NOISE.
EP0447729A2 (en) * 1989-12-05 1991-09-25 STMicroelectronics S.A. Level detector hardened against noise
US5170076A (en) * 1989-12-05 1992-12-08 Sgs-Thomson Microelectronics S.A. Threshold comparator immunized against noise

Also Published As

Publication number Publication date
JPS6019848B2 (en) 1985-05-18

Similar Documents

Publication Publication Date Title
JPS56126315A (en) Oscillator
GB1032940A (en) An encoder with non-linear quantization
JPS54132150A (en) Sample holding amplifier
JPS5511626A (en) Voltage comparator circuit
JPS558656A (en) Sample hold circuit
JPS5752227A (en) Data sampling circuit
JPS55121511A (en) Variation system for output voltage of power unit
JPS5472936A (en) Resistance-variable circuit of voltage control type
GB893405A (en) Improvements in electronic analogue computer circuits
JPS56141622A (en) Switching circuit
SU826565A1 (en) Analogue storage
JPS56157569A (en) Logarithmic amplifier
JPS5461433A (en) Tri-value converter circuit
JPS55134505A (en) Crystal oscillating circuit
JPS5666930A (en) Input circuit
JPS5719673A (en) Electric current detector with resistance change-over circuit
JPS57162834A (en) Pulse generating circuit
JPS5787224A (en) Linearizer
JPS57112135A (en) Mos type analogue switch integrated circuit
JPS5793730A (en) Signal level conversion circuit
JPS5235958A (en) Multiplication and division circuit
JPS5625826A (en) Nonlinear coding circuit device
JPS55130224A (en) Noise reduction circuit
JPS557664A (en) Temperature detection circuit
JPS5776922A (en) Timer circuit