JPS56102121A - Analog-to-digital converter - Google Patents

Analog-to-digital converter

Info

Publication number
JPS56102121A
JPS56102121A JP479280A JP479280A JPS56102121A JP S56102121 A JPS56102121 A JP S56102121A JP 479280 A JP479280 A JP 479280A JP 479280 A JP479280 A JP 479280A JP S56102121 A JPS56102121 A JP S56102121A
Authority
JP
Japan
Prior art keywords
signal
terminal
input
comparator
power source
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
JP479280A
Other languages
Japanese (ja)
Inventor
Toyoki Takemoto
Michihiro Inoue
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP479280A priority Critical patent/JPS56102121A/en
Publication of JPS56102121A publication Critical patent/JPS56102121A/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
    • H03M1/20—Increasing resolution using an n bit system to obtain n + m bits
    • H03M1/201—Increasing resolution using an n bit system to obtain n + m bits by dithering
    • 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 make it possible to reduce considerably the number of comparator corresponding to the resistor group to be used to obtain similar accuracy as conventional one has, by inputting a stair step signal into the 1st reference power source terminal and inputting another stair step signal into the 2nd reference power source terminal. CONSTITUTION:Terminal A, circuit B and signal line C represent the analog input signal impressed terminal, sample hold circuit, and signal line to which sample held analog input signal is transmitted, respectively. This signal is input into comparator group F and then becomes one side signal of the differential type comparator, respectively. Moreover, terminals D1 and D2 are the power source terminals to be used for comparison, and each of them is connected both ends of resistor group E, respectively. A stair step signal of 0.5-2V is input into terminal D1 and a similar signal of 0.1-1.5V having a constant difference of 0.5V against the former signal is input into terminal D2. By this, to obtain a similar accuracy as conventional one has, the number of comparator corresponding to the resistor group can be reduced considerably.
JP479280A 1980-01-19 1980-01-19 Analog-to-digital converter Pending JPS56102121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP479280A JPS56102121A (en) 1980-01-19 1980-01-19 Analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP479280A JPS56102121A (en) 1980-01-19 1980-01-19 Analog-to-digital converter

Publications (1)

Publication Number Publication Date
JPS56102121A true JPS56102121A (en) 1981-08-15

Family

ID=11593626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP479280A Pending JPS56102121A (en) 1980-01-19 1980-01-19 Analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS56102121A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61191633U (en) * 1985-05-21 1986-11-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61191633U (en) * 1985-05-21 1986-11-28

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