JPS5693426A - Analogue-digital converter - Google Patents

Analogue-digital converter

Info

Publication number
JPS5693426A
JPS5693426A JP17164079A JP17164079A JPS5693426A JP S5693426 A JPS5693426 A JP S5693426A JP 17164079 A JP17164079 A JP 17164079A JP 17164079 A JP17164079 A JP 17164079A JP S5693426 A JPS5693426 A JP S5693426A
Authority
JP
Japan
Prior art keywords
voltage
groups
conversion
error
analogue
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
JP17164079A
Other languages
Japanese (ja)
Inventor
Kenichi Torii
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 JP17164079A priority Critical patent/JPS5693426A/en
Publication of JPS5693426A publication Critical patent/JPS5693426A/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
    • H03M1/12—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
    • 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 a converter where the conversion error due to the error of the input voltage to comparators is small and the conversion speed can be higher, by using comparator groups, the differential amplifier, analogue switch groups, and so on. CONSTITUTION:Input analogue voltage 11 and the first different reference voltages A (taken out from respective connection points between voltage dividing resistances 14-3 and 14-4, between 14-4 and 14-5, and between 14-5 and 14-6) are compared with each other by comparator groups 13-1-13-3. On a basis of this comparison result, one voltage A is selected by analogue switch groups 17-1-17-4. The differential voltage between this voltage A and voltage 11 is amplified by 18. This output is compared with the second different reference voltage B (taken out from respective connection points of voltage dividing resistances 28-1-28-6) at an interval approximately equal to the interval (divided voltage) of voltage A by comparator groups 20-1-20-5. Comparison results of comparator groups 13-1-13-3 and 20-1-20-5 are converted to digital codes by 25. Consequently, since voltage A is fixed and the error of voltage B becomes small, the conversion error is reduced, and the conversion time is shortened, and thus, the conversion speed becomes high.
JP17164079A 1979-12-27 1979-12-27 Analogue-digital converter Pending JPS5693426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17164079A JPS5693426A (en) 1979-12-27 1979-12-27 Analogue-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17164079A JPS5693426A (en) 1979-12-27 1979-12-27 Analogue-digital converter

Publications (1)

Publication Number Publication Date
JPS5693426A true JPS5693426A (en) 1981-07-29

Family

ID=15926944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17164079A Pending JPS5693426A (en) 1979-12-27 1979-12-27 Analogue-digital converter

Country Status (1)

Country Link
JP (1) JPS5693426A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910030A (en) * 1982-07-08 1984-01-19 Kubota Ltd Analog-digital converter
JPH0226416A (en) * 1988-07-15 1990-01-29 Sanyo Electric Co Ltd A/d converting circuit
JPH08125538A (en) * 1994-10-24 1996-05-17 Nec Corp Digital/analog converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910030A (en) * 1982-07-08 1984-01-19 Kubota Ltd Analog-digital converter
JPH0226416A (en) * 1988-07-15 1990-01-29 Sanyo Electric Co Ltd A/d converting circuit
JPH08125538A (en) * 1994-10-24 1996-05-17 Nec Corp Digital/analog converter

Similar Documents

Publication Publication Date Title
ES8204894A1 (en) Digital/analog converter with capacitor-free elimination of a.c. components
JPS5623026A (en) Analog-digital conversion unit
EP0078687A3 (en) Analog to digital converter
US4321583A (en) Analogue to digital converter channels
JPS5693426A (en) Analogue-digital converter
JPS54964A (en) Analog digital converter
JPS5672527A (en) Parallel analog-to-digital converter
JPS57178417A (en) Digital to analog converting circuit
JPS5693427A (en) Analogue-digital converter
JPS5753143A (en) Analogue-digital converter
JPS57131123A (en) Analog-to-digital converter
JPS5513583A (en) Analogue-digital converter circuit
JPS5686530A (en) Parallel type a/d converter
JPS55158734A (en) Analog-digital converter
JPS56164628A (en) Parallel feedback type analog-to-digital converter
JPS5573134A (en) Analog/digital converter with check function
JPS54136163A (en) Digital-analog converting device
JPS5644222A (en) Analogue-digital converter
JPS5713814A (en) Analog-to-digital converting circuit
SU660242A1 (en) Analogue-digital converter
US4647904A (en) Folding-type analog-to-digital converter
JPS55138924A (en) Analog-to-digital converting device
SU1624342A1 (en) Digital wideband voltmeter
SU834899A1 (en) Analogue-digital converter
RU1817244C (en) Digital-to-analog converter