KR20000019781A - Multiplying digital-to-analog converter - Google Patents

Multiplying digital-to-analog converter Download PDF

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Publication number
KR20000019781A
KR20000019781A KR1019980038051A KR19980038051A KR20000019781A KR 20000019781 A KR20000019781 A KR 20000019781A KR 1019980038051 A KR1019980038051 A KR 1019980038051A KR 19980038051 A KR19980038051 A KR 19980038051A KR 20000019781 A KR20000019781 A KR 20000019781A
Authority
KR
South Korea
Prior art keywords
analog
unit capacitors
digital
capacitors
digital data
Prior art date
Application number
KR1019980038051A
Other languages
Korean (ko)
Other versions
KR100487518B1 (en
Inventor
Jong Hwa Lee
Original Assignee
Samsung Electronics Co 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to KR10-1998-0038051A priority Critical patent/KR100487518B1/en
Publication of KR20000019781A publication Critical patent/KR20000019781A/en
Application granted granted Critical
Publication of KR100487518B1 publication Critical patent/KR100487518B1/en

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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
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE: A multiplying digital to-analog converter is provided to reduce a nonlinear characteristic generated owing to a mismatch of a capacitor array. CONSTITUTION: A multiplying digital-to-analog converter comprises a first reference terminal(pVref) supplied with a first reference voltage and a second reference terminal(nVref) supplied with a second reference voltage. A first capacitor array has first 2¬N unit capacitors(PC1-PC15) each corresponding to all bits of a first digital data inputted from a previous analog-to-digital converter and two fixed capacitors(PCfb1,PCfb2). A first select part has 2¬N switches(PS1-PS15) which connect one ends of the first unit capacitors and the first and second reference terminals in response to the first digital data. A second capacitor array has first 2¬N unit capacitors(nC1-nC15) each corresponding to all bits of a second digital data inputted from a previous analog-to-digital converter and two fixed capacitors(nCfb1,nCfb2). A second select part has 2¬N switches(NS1-NS15) which connect one ends of the second unit capacitors and the first and second reference terminals in response to the second digital data. An operational amplifier(OP) has a first input terminal coupled to the other ends of the first unit capacitors and a second input terminal coupled to the other ends of the second unit capacitors, and amplifies a difference between a digitized value of an external analog input signal and the analog signal.
KR10-1998-0038051A 1998-09-15 1998-09-15 Multiplying digital to analog converter for improving linearity KR100487518B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-1998-0038051A KR100487518B1 (en) 1998-09-15 1998-09-15 Multiplying digital to analog converter for improving linearity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-1998-0038051A KR100487518B1 (en) 1998-09-15 1998-09-15 Multiplying digital to analog converter for improving linearity

Publications (2)

Publication Number Publication Date
KR20000019781A true KR20000019781A (en) 2000-04-15
KR100487518B1 KR100487518B1 (en) 2005-08-31

Family

ID=19550670

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-1998-0038051A KR100487518B1 (en) 1998-09-15 1998-09-15 Multiplying digital to analog converter for improving linearity

Country Status (1)

Country Link
KR (1) KR100487518B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100688512B1 (en) * 2004-12-30 2007-03-02 삼성전자주식회사 Pipelined analog-digital converting device using two reference voltages
KR100711674B1 (en) * 2004-01-03 2007-05-02 샤프 가부시키가이샤 Digital/analog converter, display driver and display
KR101153667B1 (en) * 2005-02-21 2012-06-18 엘지전자 주식회사 Circuit for driving reference voltage of a pipelined analog to digital converter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030078299A (en) * 2002-03-29 2003-10-08 주식회사 하이닉스반도체 Multiplying digital to analog converter with improved linearity

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100711674B1 (en) * 2004-01-03 2007-05-02 샤프 가부시키가이샤 Digital/analog converter, display driver and display
KR100688512B1 (en) * 2004-12-30 2007-03-02 삼성전자주식회사 Pipelined analog-digital converting device using two reference voltages
KR101153667B1 (en) * 2005-02-21 2012-06-18 엘지전자 주식회사 Circuit for driving reference voltage of a pipelined analog to digital converter

Also Published As

Publication number Publication date
KR100487518B1 (en) 2005-08-31

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