FR2346907A2 - A:D converter producing stream of pulses - Google Patents

A:D converter producing stream of pulses

Info

Publication number
FR2346907A2
FR2346907A2 FR7709497A FR7709497A FR2346907A2 FR 2346907 A2 FR2346907 A2 FR 2346907A2 FR 7709497 A FR7709497 A FR 7709497A FR 7709497 A FR7709497 A FR 7709497A FR 2346907 A2 FR2346907 A2 FR 2346907A2
Authority
FR
France
Prior art keywords
input
flip flop
circuit
feedback loop
analogue
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
FR7709497A
Other languages
French (fr)
Other versions
FR2346907B2 (en
Inventor
Edward Harry Lambourn
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Priority claimed from GB977074A external-priority patent/GB1450989A/en
Priority claimed from GB13160/76A external-priority patent/GB1512612A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2346907A2 publication Critical patent/FR2346907A2/en
Application granted granted Critical
Publication of FR2346907B2 publication Critical patent/FR2346907B2/fr
Granted 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
    • 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
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging

Abstract

An analogue to digital converter providing an output stream of pulses whose repetition frequency is proportional to the amplitude of the input analogue waveform. The circuit provides automatic temperature compensation and reduces low frequency noise at low input signal levels. The circuit is based on an input flip flop synchronised by a clock source. This input circuit includes a comparator triggering the flip flop when a given threshold level is exceeded. A feedback loop couples this into a second flip flop controlled from the same clock and includes a second feedback loop which with a third such loop controls two transistors fed from a constant current source, the transistors acting as a current switch.
FR7709497A 1974-03-05 1977-03-30 A:D converter producing stream of pulses Granted FR2346907A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB977074A GB1450989A (en) 1974-03-05 1974-03-05 Analogue to digital converter
GB13160/76A GB1512612A (en) 1976-04-01 1976-04-01 Analogue to digital conversion

Publications (2)

Publication Number Publication Date
FR2346907A2 true FR2346907A2 (en) 1977-10-28
FR2346907B2 FR2346907B2 (en) 1983-05-20

Family

ID=32178842

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7709497A Granted FR2346907A2 (en) 1974-03-05 1977-03-30 A:D converter producing stream of pulses

Country Status (1)

Country Link
FR (1) FR2346907A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2262807A1 (en) * 1974-02-28 1975-09-26 Fayolle Aime Electrical voltage integration method - uses count of switching of voltage from constant current source

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2262807A1 (en) * 1974-02-28 1975-09-26 Fayolle Aime Electrical voltage integration method - uses count of switching of voltage from constant current source

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *

Also Published As

Publication number Publication date
FR2346907B2 (en) 1983-05-20

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