GB1518110A - Analogue to digital converters - Google Patents

Analogue to digital converters

Info

Publication number
GB1518110A
GB1518110A GB39846/75A GB3984675A GB1518110A GB 1518110 A GB1518110 A GB 1518110A GB 39846/75 A GB39846/75 A GB 39846/75A GB 3984675 A GB3984675 A GB 3984675A GB 1518110 A GB1518110 A GB 1518110A
Authority
GB
United Kingdom
Prior art keywords
reference signal
analogue
reached
level
integrated
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.)
Expired
Application number
GB39846/75A
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.)
Fluke Precision Measurement Ltd
Original Assignee
Datron Electronics 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 Datron Electronics Ltd filed Critical Datron Electronics Ltd
Priority to GB39846/75A priority Critical patent/GB1518110A/en
Publication of GB1518110A publication Critical patent/GB1518110A/en
Expired 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
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval

Abstract

1518110 Analogue-to-digital conversion DATRON ELECTRONICS Ltd 20 Oct 1976 [29 Sept 1975] 39846/75 Heading H3H In a dual ramp analogue-to-digital converter, the return ramp is in two sections, a reference signal being integrated at 12 until the first clock pulse after a predetermined level A has been reached, and then a fraction of the reference signal is integrated until the datum level is reached, clock pulses counted in the second section being given a corresponding fractional weighting. As shown, a portion of the reference signal is fed forward via resistors 36, 34 to bias the comparator 30 to level A and at T 4 , Fig. 2, switch 38 closes, reducing the reference signal to <SP>1</SP>/ 10 of its value. During T2-T4 clock pulses are fed via gate 46 to the tens decade of a counter 52-50 and after T 4 via gate 44 to the units decade 52.
GB39846/75A 1976-10-20 1976-10-20 Analogue to digital converters Expired GB1518110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB39846/75A GB1518110A (en) 1976-10-20 1976-10-20 Analogue to digital converters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB39846/75A GB1518110A (en) 1976-10-20 1976-10-20 Analogue to digital converters

Publications (1)

Publication Number Publication Date
GB1518110A true GB1518110A (en) 1978-07-19

Family

ID=10411812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39846/75A Expired GB1518110A (en) 1976-10-20 1976-10-20 Analogue to digital converters

Country Status (1)

Country Link
GB (1) GB1518110A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235344A (en) * 1989-08-24 1991-02-27 Schlumberger Technologies Ltd Analogue-to-digital converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2235344A (en) * 1989-08-24 1991-02-27 Schlumberger Technologies Ltd Analogue-to-digital converter
GB2235344B (en) * 1989-08-24 1993-08-04 Schlumberger Technologies Ltd Analogue-to-digital converter

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee