FR2300465A1 - A-D converter has input integrator feeding comparator - and counter measuring time between end of switched input and point when given level is reached - Google Patents

A-D converter has input integrator feeding comparator - and counter measuring time between end of switched input and point when given level is reached

Info

Publication number
FR2300465A1
FR2300465A1 FR7603156A FR7603156A FR2300465A1 FR 2300465 A1 FR2300465 A1 FR 2300465A1 FR 7603156 A FR7603156 A FR 7603156A FR 7603156 A FR7603156 A FR 7603156A FR 2300465 A1 FR2300465 A1 FR 2300465A1
Authority
FR
France
Prior art keywords
integrator
input
given level
converter
point
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.)
Withdrawn
Application number
FR7603156A
Other languages
French (fr)
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.)
National Semiconductor Corp
Original Assignee
National Semiconductor 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 National Semiconductor Corp filed Critical National Semiconductor Corp
Publication of FR2300465A1 publication Critical patent/FR2300465A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/52—Input signal integrated with linear return to datum

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

The A/D converter has the analog input signal (Vx) applied to the non-inverting input of an operational amplifier integrator (11) during a first time interval, and a reference voltage (VR) applied to the inverting input during a second interval. A comparator (23), coupled to the output of the integrator, determines when the integrator output during the second time interval reaches a given level. A logic and counter circuit responds to the comparator output and measures the time between the start of the second time interval and the time point when the integrator output reaches the given level.
FR7603156A 1975-02-07 1976-02-05 A-D converter has input integrator feeding comparator - and counter measuring time between end of switched input and point when given level is reached Withdrawn FR2300465A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US54808375A 1975-02-07 1975-02-07

Publications (1)

Publication Number Publication Date
FR2300465A1 true FR2300465A1 (en) 1976-09-03

Family

ID=24187328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7603156A Withdrawn FR2300465A1 (en) 1975-02-07 1976-02-05 A-D converter has input integrator feeding comparator - and counter measuring time between end of switched input and point when given level is reached

Country Status (3)

Country Link
JP (1) JPS5194751A (en)
DE (1) DE2557745A1 (en)
FR (1) FR2300465A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54121655A (en) * 1978-03-14 1979-09-20 Sharp Corp Analog-digital converter
CN113141163B (en) * 2020-01-19 2023-11-17 晶豪科技股份有限公司 Class D power amplifier circuit

Also Published As

Publication number Publication date
DE2557745A1 (en) 1976-08-19
JPS5194751A (en) 1976-08-19

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Legal Events

Date Code Title Description
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