GB2078454A - Current mirror digital to analog converter - Google Patents

Current mirror digital to analog converter

Info

Publication number
GB2078454A
GB2078454A GB8029139A GB8029139A GB2078454A GB 2078454 A GB2078454 A GB 2078454A GB 8029139 A GB8029139 A GB 8029139A GB 8029139 A GB8029139 A GB 8029139A GB 2078454 A GB2078454 A GB 2078454A
Authority
GB
United Kingdom
Prior art keywords
mirroring
transistors
mos
analog converter
output
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Withdrawn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
GB8029139A
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.)
American Microsystems Holding Corp
Original Assignee
American Microsystems Holding 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 American Microsystems Holding Corp filed Critical American Microsystems Holding Corp
Publication of GB2078454A publication Critical patent/GB2078454A/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Withdrawn legal-status Critical Current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
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous 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
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/40—Analogue value compared with reference values sequentially only, e.g. successive approximation type recirculation type
    • 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
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter

Landscapes

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

Abstract

An integrated circuit digital to analog converter comprised of MOS current mirrors and utilizing additional MOS devices to provide transmission gates and control means. Each transmission gate (36) is connected to a source of digital data to be converted and the mirroring device (14-44) for each transmission gate has a channel with some predetermined proportional relationship to the channels of input (12) and mirroring output MOS transistors (14-44) with the input transistor (12) connected to a constant current source (I<u1>u) the total output mirroring current (I<u2>u) of the output mirroring transistors (14-44) is in quantised analog form and varies according to the cumulative currents from the mirroring MOS transistors as the transistors are activated. The invention may be embodied in linear multiplying, non-linear and companding converters.
GB8029139A 1979-06-22 1980-06-20 Current mirror digital to analog converter Withdrawn GB2078454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5096179A 1979-06-22 1979-06-22

Publications (1)

Publication Number Publication Date
GB2078454A true GB2078454A (en) 1982-01-06

Family

ID=21968561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8029139A Withdrawn GB2078454A (en) 1979-06-22 1980-06-20 Current mirror digital to analog converter

Country Status (6)

Country Link
EP (1) EP0030561A1 (en)
JP (1) JPS56501184A (en)
FR (1) FR2510328A1 (en)
GB (1) GB2078454A (en)
NL (1) NL8003634A (en)
WO (1) WO1981000033A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156228A (en) * 1982-02-23 1983-09-17 バア−−ブラウン・リサ−チ・コ−ポレ−シヨン Analog-to-digital converter used for pulse code audio modulation
DE4130675A1 (en) * 1991-09-14 1993-03-18 Philips Patentverwaltung MULTIPLICING DIGITAL-ANALOG CONVERTER

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045793A (en) * 1975-09-29 1977-08-30 Motorola, Inc. Digital to analog converter
US4083043A (en) * 1976-02-18 1978-04-04 Trw Inc. High speed monolithic a/d converter utilizing strobe comparator

Also Published As

Publication number Publication date
FR2510328A1 (en) 1983-01-28
WO1981000033A1 (en) 1981-01-08
EP0030561A1 (en) 1981-06-24
NL8003634A (en) 1980-12-24
JPS56501184A (en) 1981-08-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)