JPS5744331A - A/d converter - Google Patents

A/d converter

Info

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
Application number
JP11926980A
Other languages
Japanese (ja)
Inventor
Shoichi Shimizu
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11926980A priority Critical patent/JPS5744331A/en
Publication of JPS5744331A publication Critical patent/JPS5744331A/en
Pending 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
    • H03M1/06—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.
JP11926980A 1980-08-29 1980-08-29 A/d converter Pending JPS5744331A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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