GB1187550A - Analog-to-Digital Converter - Google Patents

Analog-to-Digital Converter

Info

Publication number
GB1187550A
GB1187550A GB5100468A GB5100468A GB1187550A GB 1187550 A GB1187550 A GB 1187550A GB 5100468 A GB5100468 A GB 5100468A GB 5100468 A GB5100468 A GB 5100468A GB 1187550 A GB1187550 A GB 1187550A
Authority
GB
United Kingdom
Prior art keywords
stage
delivering
operational amplifier
receiving
reference signal
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
GB5100468A
Inventor
Daniel Jacques Esteban
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 Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1187550A publication Critical patent/GB1187550A/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
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/44—Sequential comparisons in series-connected stages with change in value of analogue signal
    • H03M1/445—Sequential comparisons in series-connected stages with change in value of analogue signal the stages being of the folding type

Landscapes

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

Abstract

1,187,550. A/D converters. INTERNATIONAL BUSINESS MACHINES CORP. 28 Oct., 1968 [6 Nov., 1967], No. 51004/68. Heading G4H. Apparatus for converting an analogue input voltage into Gray binary code includes a plurality of series connected stages one of which is shown in Fig. 5, each stage including a first operational amplifier OAl, receiving the input V n to the stage and a fixed reference signal E/2 and delivering an output signal V n+1 = 2 |V n | - E to the next stage and a second operational amplifier OA2 receiving the input voltage V n and delivering a digital output bit D n in accordance with the polarity of V n . The first stage does not receive the reference signal E/2 and determines the polarity bit D1. The Gray coded outputs D1-D5 may be converted to natural binary using exclusive OR gates.
GB5100468A 1967-11-06 1968-10-28 Analog-to-Digital Converter Expired GB1187550A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6008812 1967-11-06

Publications (1)

Publication Number Publication Date
GB1187550A true GB1187550A (en) 1970-04-08

Family

ID=8970634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5100468A Expired GB1187550A (en) 1967-11-06 1968-10-28 Analog-to-Digital Converter

Country Status (3)

Country Link
DE (1) DE1805155A1 (en)
FR (1) FR1550362A (en)
GB (1) GB1187550A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492267B1 (en) * 1990-12-10 1996-07-10 Andrej Zatler Electronic analog-to-digital converter
FR3031845B1 (en) 2015-01-16 2017-01-20 Inst Polytechnique Grenoble SYSTEM FOR CONNECTING A DECENTRALIZED MONOPHASE GENERATOR TO A THREE-PHASE NETWORK

Also Published As

Publication number Publication date
DE1805155A1 (en) 1969-06-26
FR1550362A (en) 1968-12-20

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Legal Events

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