KR20000019781A - Multiplying digital-to-analog converter - Google Patents
Multiplying digital-to-analog converter Download PDFInfo
- 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
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
- H03M1/14—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.
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)
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)
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 |
-
1998
- 1998-09-15 KR KR10-1998-0038051A patent/KR100487518B1/en not_active IP Right Cessation
Cited By (3)
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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Legal Events
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A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
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LAPS | Lapse due to unpaid annual fee |