JPS5623026A - Analog-digital conversion unit - Google Patents

Analog-digital conversion unit

Info

Publication number
JPS5623026A
JPS5623026A JP9957479A JP9957479A JPS5623026A JP S5623026 A JPS5623026 A JP S5623026A JP 9957479 A JP9957479 A JP 9957479A JP 9957479 A JP9957479 A JP 9957479A JP S5623026 A JPS5623026 A JP S5623026A
Authority
JP
Japan
Prior art keywords
comparators
bits
output
analog
digital signal
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
JP9957479A
Other languages
Japanese (ja)
Other versions
JPS6243570B2 (en
Inventor
Tsuneo Fujita
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9957479A priority Critical patent/JPS5623026A/en
Publication of JPS5623026A publication Critical patent/JPS5623026A/en
Publication of JPS6243570B2 publication Critical patent/JPS6243570B2/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
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
    • H03M1/145—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit the steps being performed sequentially in series-connected stages
    • H03M1/146—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit the steps being performed sequentially in series-connected stages all stages being simultaneous converters
    • H03M1/147—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit the steps being performed sequentially in series-connected stages all stages being simultaneous converters at least two of which share a common reference generator
    • 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

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To obtain the analog-digital conversion unit less in the number of comparators and switches, simple in the constitution, and highly accurate, by using a plurality of section comparators and stage comparators. CONSTITUTION:The voltage dividers 310-340 of 2<i> sets are connected in series, connected to the reference voltage VR, and each connection point is connected to the section comparators 361-365. The comparators compare the potential at the divider connection point and the analog input voltage Vin, and the output is converted into the digital signal 410 in i bits with the 1st position detecting circuit 370 and the 1st code conversion circuit 380. The output of the position detector 370 closes one output switch group 351-354 of the voltage divider 310-340. The output of 2<j> sets of the switch group is given to the stage comparators 366-369 and compared with the input voltage Vin. The result of comparison is converted into the digital signal 420 in j bits at the 2nd position detector 390 and the 2nd code conversion circuit 400. The result of conversion is represented with the digital signal of upper- rank i bits and lower-rank j bits.
JP9957479A 1979-08-03 1979-08-03 Analog-digital conversion unit Granted JPS5623026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9957479A JPS5623026A (en) 1979-08-03 1979-08-03 Analog-digital conversion unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9957479A JPS5623026A (en) 1979-08-03 1979-08-03 Analog-digital conversion unit

Publications (2)

Publication Number Publication Date
JPS5623026A true JPS5623026A (en) 1981-03-04
JPS6243570B2 JPS6243570B2 (en) 1987-09-16

Family

ID=14250870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9957479A Granted JPS5623026A (en) 1979-08-03 1979-08-03 Analog-digital conversion unit

Country Status (1)

Country Link
JP (1) JPS5623026A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589426A (en) * 1981-07-10 1983-01-19 Sony Corp Analog-to-digital converter
JPS5815324A (en) * 1981-07-21 1983-01-28 Sony Corp Analog-to-digital converter
JPS5869111A (en) * 1981-10-20 1983-04-25 Toshiba Corp Analog-to-digital converter
JPS5869112A (en) * 1981-10-20 1983-04-25 Toshiba Corp Analog-to-digital converter
JPS5873232A (en) * 1981-10-27 1983-05-02 Nec Corp Analog-to-digital conversion circuit
JPS5875324A (en) * 1981-10-29 1983-05-07 Toshiba Corp Analog-digital converter
JPS5881328A (en) * 1981-11-10 1983-05-16 Toshiba Corp A/d converter
JPS58104526A (en) * 1981-10-09 1983-06-22 アナログ・デバイセス・インコ−ポレ−テツド Two-stage a/d converter
JPS58107719A (en) * 1981-12-22 1983-06-27 Sony Corp Analog-to-digital converter
JPS5910029A (en) * 1982-07-08 1984-01-19 Kubota Ltd Analog-digital convertion method
JPS5910030A (en) * 1982-07-08 1984-01-19 Kubota Ltd Analog-digital converter
JPS5959035U (en) * 1982-10-09 1984-04-17 ソニー株式会社 A-D converter
JPS6052117A (en) * 1983-09-01 1985-03-25 Trio Kenwood Corp Analog-digital converting device
JPS60146528A (en) * 1984-01-11 1985-08-02 Nec Corp Analog-digital converting circuit
JPS61189022A (en) * 1985-02-12 1986-08-22 ア−ルシ−エ−　コ−ポレ−ション Resistance circuit network for analog-digital converter
US5223836A (en) * 1991-02-22 1993-06-29 Sony Corporation Subranging analog-to-digital converter with priority weighted correction for the m.s.b. group
JPH1032491A (en) * 1996-03-19 1998-02-03 Samsung Electron Co Ltd Flash a/d converter
JP2006352597A (en) * 2005-06-17 2006-12-28 Sony Corp Solid-state image sensing device, and ad conversion method and image sensing unit thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133331U (en) * 1974-09-04 1976-03-11

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133331B2 (en) * 1972-02-18 1976-09-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133331U (en) * 1974-09-04 1976-03-11

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589426A (en) * 1981-07-10 1983-01-19 Sony Corp Analog-to-digital converter
JPH0239136B2 (en) * 1981-07-10 1990-09-04 Sony Corp
JPH0239137B2 (en) * 1981-07-21 1990-09-04 Sony Corp
JPS5815324A (en) * 1981-07-21 1983-01-28 Sony Corp Analog-to-digital converter
JPS58104526A (en) * 1981-10-09 1983-06-22 アナログ・デバイセス・インコ−ポレ−テツド Two-stage a/d converter
JPS5869111A (en) * 1981-10-20 1983-04-25 Toshiba Corp Analog-to-digital converter
JPS5869112A (en) * 1981-10-20 1983-04-25 Toshiba Corp Analog-to-digital converter
JPH0251301B2 (en) * 1981-10-20 1990-11-07 Tokyo Shibaura Electric Co
JPS5873232A (en) * 1981-10-27 1983-05-02 Nec Corp Analog-to-digital conversion circuit
JPS5875324A (en) * 1981-10-29 1983-05-07 Toshiba Corp Analog-digital converter
JPS5881328A (en) * 1981-11-10 1983-05-16 Toshiba Corp A/d converter
JPS58107719A (en) * 1981-12-22 1983-06-27 Sony Corp Analog-to-digital converter
JPH0311132B2 (en) * 1981-12-22 1991-02-15 Sony Corp
JPS5910030A (en) * 1982-07-08 1984-01-19 Kubota Ltd Analog-digital converter
JPS5910029A (en) * 1982-07-08 1984-01-19 Kubota Ltd Analog-digital convertion method
JPS5959035U (en) * 1982-10-09 1984-04-17 ソニー株式会社 A-D converter
JPS6052117A (en) * 1983-09-01 1985-03-25 Trio Kenwood Corp Analog-digital converting device
JPS60146528A (en) * 1984-01-11 1985-08-02 Nec Corp Analog-digital converting circuit
JPS61189022A (en) * 1985-02-12 1986-08-22 ア−ルシ−エ−　コ−ポレ−ション Resistance circuit network for analog-digital converter
US5223836A (en) * 1991-02-22 1993-06-29 Sony Corporation Subranging analog-to-digital converter with priority weighted correction for the m.s.b. group
JPH1032491A (en) * 1996-03-19 1998-02-03 Samsung Electron Co Ltd Flash a/d converter
JP2006352597A (en) * 2005-06-17 2006-12-28 Sony Corp Solid-state image sensing device, and ad conversion method and image sensing unit thereof

Also Published As

Publication number Publication date
JPS6243570B2 (en) 1987-09-16

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