JPS57204633A - Analog-to-digital converter - Google Patents

Analog-to-digital converter

Info

Publication number
JPS57204633A
JPS57204633A JP8930381A JP8930381A JPS57204633A JP S57204633 A JPS57204633 A JP S57204633A JP 8930381 A JP8930381 A JP 8930381A JP 8930381 A JP8930381 A JP 8930381A JP S57204633 A JPS57204633 A JP S57204633A
Authority
JP
Japan
Prior art keywords
gates
output
comparators
exclusive
converted
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.)
Granted
Application number
JP8930381A
Other languages
Japanese (ja)
Other versions
JPS613134B2 (en
Inventor
Kenichi Torii
Toshiyasu Yoshizawa
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 JP8930381A priority Critical patent/JPS57204633A/en
Publication of JPS57204633A publication Critical patent/JPS57204633A/en
Publication of JPS613134B2 publication Critical patent/JPS613134B2/ja
Granted 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
    • H03M1/12—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

Abstract

PURPOSE:To decrease the number of gates, by converting the output of comparators which are set in parallel to each other into a gray code through an exclusive OR gate and then into a binary code to deliver it. CONSTITUTION:A input voltage VIN is compared with the reference voltage by comparators 121-1215, and the output of comparison is converted into a gray code through exclusive OR gates 131 and 137 plus a wired OR circuit. This gray code receives the shaping of wave-form through gates 151-154 and then converted into a binary code by exclusive OR gates 161-163 to be delivered through output parts 171-174 in the form of digital signals D1-D4. In such a way, the number of gates can be decreased compared with the case when the output of the comparators 121-1215 is directly converted into a binary code.
JP8930381A 1981-06-10 1981-06-10 Analog-to-digital converter Granted JPS57204633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8930381A JPS57204633A (en) 1981-06-10 1981-06-10 Analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8930381A JPS57204633A (en) 1981-06-10 1981-06-10 Analog-to-digital converter

Publications (2)

Publication Number Publication Date
JPS57204633A true JPS57204633A (en) 1982-12-15
JPS613134B2 JPS613134B2 (en) 1986-01-30

Family

ID=13966893

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8930381A Granted JPS57204633A (en) 1981-06-10 1981-06-10 Analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS57204633A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171315A (en) * 1983-03-18 1984-09-27 Nec Corp Analog-digital converter
JPS60100833A (en) * 1983-08-22 1985-06-04 テイ　ア−ル　ダブリユ−　インコ−ポレ−テツド Analog-to-digital converter and encoding technique used therefor
JPS63269829A (en) * 1987-04-28 1988-11-08 Matsushita Electric Ind Co Ltd Parallel-connected type a/d converter
JPS6468130A (en) * 1987-09-09 1989-03-14 Mitsubishi Electric Corp Semiconductor integrated circuit
JPH01120128A (en) * 1987-11-04 1989-05-12 Matsushita Electric Ind Co Ltd Parallel type a/d converter
JPH08293795A (en) * 1995-02-22 1996-11-05 Fujitsu Ltd Encoder, a/d converter and semiconductor integrated circuit device
EP1065788A2 (en) * 1995-02-22 2001-01-03 Fujitsu Limited Analog to digital converters and encoders therefor
JP2008199682A (en) * 2008-05-23 2008-08-28 Sony Corp Parallel ad converter, signal processing circuit using the same, and recording/reproduction apparatus using the same

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0125449B2 (en) * 1983-03-18 1989-05-17 Nippon Electric Co
US4596978A (en) * 1983-03-18 1986-06-24 Nec Parallel comparison type analog to digital converter
JPS59171315A (en) * 1983-03-18 1984-09-27 Nec Corp Analog-digital converter
JPS60100833A (en) * 1983-08-22 1985-06-04 テイ　ア−ル　ダブリユ−　インコ−ポレ−テツド Analog-to-digital converter and encoding technique used therefor
JPH0232813B2 (en) * 1983-08-22 1990-07-24 Trw Inc
JPS63269829A (en) * 1987-04-28 1988-11-08 Matsushita Electric Ind Co Ltd Parallel-connected type a/d converter
JPS6468130A (en) * 1987-09-09 1989-03-14 Mitsubishi Electric Corp Semiconductor integrated circuit
JPH01120128A (en) * 1987-11-04 1989-05-12 Matsushita Electric Ind Co Ltd Parallel type a/d converter
JPH08293795A (en) * 1995-02-22 1996-11-05 Fujitsu Ltd Encoder, a/d converter and semiconductor integrated circuit device
EP1065788A2 (en) * 1995-02-22 2001-01-03 Fujitsu Limited Analog to digital converters and encoders therefor
US6288668B1 (en) 1995-02-22 2001-09-11 Fujitsu Limited Analog to digital converter, encoder, and recorded data reproducing apparatus
US6288665B1 (en) 1995-02-22 2001-09-11 Fujitsu Limited Analog to digital converter, encoder, and recorded data reproducing apparatus
EP1065788A3 (en) * 1995-02-22 2002-01-23 Fujitsu Limited Analog to digital converters and encoders therefor
JP2008199682A (en) * 2008-05-23 2008-08-28 Sony Corp Parallel ad converter, signal processing circuit using the same, and recording/reproduction apparatus using the same

Also Published As

Publication number Publication date
JPS613134B2 (en) 1986-01-30

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