JPS5737922A - A/d converter and its output extending system - Google Patents

A/d converter and its output extending system

Info

Publication number
JPS5737922A
JPS5737922A JP11023180A JP11023180A JPS5737922A JP S5737922 A JPS5737922 A JP S5737922A JP 11023180 A JP11023180 A JP 11023180A JP 11023180 A JP11023180 A JP 11023180A JP S5737922 A JPS5737922 A JP S5737922A
Authority
JP
Japan
Prior art keywords
circuit
output
signal
underflow
comparator
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
JP11023180A
Other languages
Japanese (ja)
Other versions
JPS643375B2 (en
Inventor
Makoto Furuhata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Priority to JP11023180A priority Critical patent/JPS5737922A/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to GB8123641A priority patent/GB2082411B/en
Priority to DE19813131932 priority patent/DE3131932A1/en
Priority to US06/292,587 priority patent/US4509036A/en
Publication of JPS5737922A publication Critical patent/JPS5737922A/en
Priority to GB08325882A priority patent/GB2126815B/en
Priority to SG27386A priority patent/SG27386G/en
Priority to SG281/86A priority patent/SG28186G/en
Priority to HK465/86A priority patent/HK46586A/en
Priority to HK443/86A priority patent/HK44386A/en
Priority to MY572/86A priority patent/MY8600572A/en
Priority to MY367/87A priority patent/MY8700367A/en
Publication of JPS643375B2 publication Critical patent/JPS643375B2/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

Landscapes

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

Abstract

PURPOSE:To ensure an easy extension of the output bit, by adding a function that forcibly fix the digital output signal at a prescribed level by an underflow signal or a signal supplied from outside. CONSTITUTION:The analog signal supplied from a terminal A is compared with the reference voltage through a comparator 1. The output of the comparator 1 is converted into a digital signal of the gray code through an output circuit 2 and applied to a converting cirucit 4 via a master latching circuit 3 to be converted into a binary code. This converted binary code is taken into a slave latching output circuit 5. On the other hand, the underflow detecting signal detected at the comparator 1 is applied to a gate circuit 7 via an underflow master latching circuit 6. The circuit 7 carries out a control to or not to transmit the control signal given from a terminal L to a slave latching circuit 8 and at the same time fixes forcibly the output binary code of the circuit 4 at a prescribed level by the underflow signal.
JP11023180A 1980-08-13 1980-08-13 A/d converter and its output extending system Granted JPS5737922A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP11023180A JPS5737922A (en) 1980-08-13 1980-08-13 A/d converter and its output extending system
GB8123641A GB2082411B (en) 1980-08-13 1981-08-03 Parallel comparator and analogue-to-digital converter
DE19813131932 DE3131932A1 (en) 1980-08-13 1981-08-12 PARALLEL COMPARISON AND ANALOG-DIGITAL CONVERTER USING THIS
US06/292,587 US4509036A (en) 1980-08-13 1981-08-13 A/D Converter with bit extension capability using wired-OR outputs
GB08325882A GB2126815B (en) 1980-08-13 1983-09-28 An integrated analog-to-digital converter
SG27386A SG27386G (en) 1980-08-13 1986-03-20 An integrated analog-to-digital converter
SG281/86A SG28186G (en) 1980-08-13 1986-03-24 Parallel comparator
HK465/86A HK46586A (en) 1980-08-13 1986-06-19 An integrated analog-to-digital converter
HK443/86A HK44386A (en) 1980-08-13 1986-06-19 Parallel comparator
MY572/86A MY8600572A (en) 1980-08-13 1986-12-30 Parallel comprator
MY367/87A MY8700367A (en) 1980-08-13 1987-12-30 An integrated analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11023180A JPS5737922A (en) 1980-08-13 1980-08-13 A/d converter and its output extending system

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP9811388A Division JPS63296416A (en) 1988-04-22 1988-04-22 A/d converter
JP9811488A Division JPS63296417A (en) 1988-04-22 1988-04-22 A/d converter

Publications (2)

Publication Number Publication Date
JPS5737922A true JPS5737922A (en) 1982-03-02
JPS643375B2 JPS643375B2 (en) 1989-01-20

Family

ID=14530412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11023180A Granted JPS5737922A (en) 1980-08-13 1980-08-13 A/d converter and its output extending system

Country Status (1)

Country Link
JP (1) JPS5737922A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5370653A (en) * 1976-12-07 1978-06-23 Toshiba Corp Digital output unit
JPS5440549A (en) * 1977-09-07 1979-03-30 Yasuda Denken Kk Ad converter rated range expanding system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5370653A (en) * 1976-12-07 1978-06-23 Toshiba Corp Digital output unit
JPS5440549A (en) * 1977-09-07 1979-03-30 Yasuda Denken Kk Ad converter rated range expanding system

Also Published As

Publication number Publication date
JPS643375B2 (en) 1989-01-20

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