JPS5744331A - A/d converter - Google Patents
A/d converterInfo
- Publication number
- JPS5744331A JPS5744331A JP11926980A JP11926980A JPS5744331A JP S5744331 A JPS5744331 A JP S5744331A JP 11926980 A JP11926980 A JP 11926980A JP 11926980 A JP11926980 A JP 11926980A JP S5744331 A JPS5744331 A JP S5744331A
- Authority
- JP
- Japan
- Prior art keywords
- resistances
- epitaxial layer
- those
- resistance
- same potential
- 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.)
- Pending
Links
Classifications
-
- 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
- H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
- H03M1/0612—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic over the full range of the converter, e.g. for correcting differential non-linearity
-
- 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
- H03M1/36—Analogue value compared with reference values simultaneously only, i.e. parallel type
- H03M1/361—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type
- H03M1/362—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type the reference values being generated by a resistive voltage divider
- H03M1/365—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type the reference values being generated by a resistive voltage divider the voltage divider being a single resistor string
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To eliminate an error due to the nonlinear voltage characteristics of a resistance in a parallel comparison type A/D converter by forming resistances, applied with a reference voltage, in an epitaxial layer and by giving the entaxial layer the same potential gradient as those of the resistances. CONSTITUTION:In an epitaxial layer 22 formed on a p type substrate 21, p type impurities are diffused to form diffuses resistances R1-R16. The resistances R1-R16 are connected in series to a reference voltage source 6, so that reference voltages to be applied to a comparator are obtained from connection points of those respective resistances. A voltage source 23 and a resistance 30 are connected to the epitaxial layer 22, which is given the same potential gradient as those of the resistances R1-R16. Consequently, reverse bias voltages between the resistances R1-R16, and the epitaxial layer are all equal with regard to all resistances, and errors of the resistances are eliminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11926980A JPS5744331A (en) | 1980-08-29 | 1980-08-29 | A/d converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11926980A JPS5744331A (en) | 1980-08-29 | 1980-08-29 | A/d converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5744331A true JPS5744331A (en) | 1982-03-12 |
Family
ID=14757167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11926980A Pending JPS5744331A (en) | 1980-08-29 | 1980-08-29 | A/d converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5744331A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6352566U (en) * | 1986-09-26 | 1988-04-08 | ||
JPH01162422A (en) * | 1987-12-18 | 1989-06-26 | Fujitsu Ltd | Analog/digital converter |
JP2002243230A (en) * | 2001-02-16 | 2002-08-28 | Kajima Corp | Vent cap |
-
1980
- 1980-08-29 JP JP11926980A patent/JPS5744331A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6352566U (en) * | 1986-09-26 | 1988-04-08 | ||
JPH01162422A (en) * | 1987-12-18 | 1989-06-26 | Fujitsu Ltd | Analog/digital converter |
JP2002243230A (en) * | 2001-02-16 | 2002-08-28 | Kajima Corp | Vent cap |
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