JPS57212823A - Analog-to-digital converter - Google Patents

Analog-to-digital converter

Info

Publication number
JPS57212823A
JPS57212823A JP56097561A JP9756181A JPS57212823A JP S57212823 A JPS57212823 A JP S57212823A JP 56097561 A JP56097561 A JP 56097561A JP 9756181 A JP9756181 A JP 9756181A JP S57212823 A JPS57212823 A JP S57212823A
Authority
JP
Japan
Prior art keywords
analog
comparators
weight
current
bit
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
JP56097561A
Other languages
Japanese (ja)
Inventor
Masayuki Matsuura
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.)
NIHON RIRAIANSU KK
Reliance Electric Ltd
Original Assignee
NIHON RIRAIANSU KK
Reliance Electric 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 NIHON RIRAIANSU KK, Reliance Electric Ltd filed Critical NIHON RIRAIANSU KK
Priority to JP56097561A priority Critical patent/JPS57212823A/en
Publication of JPS57212823A publication Critical patent/JPS57212823A/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
    • H03M1/34—Analogue value compared with reference values

Landscapes

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

Abstract

PURPOSE:To eliminate the need for a digital coder, by adding current having the same weight as a reference current value inputted to comparators, to the input side of all the comparators located at the lower order from the output side of a comparator to the output of which a bit is set. CONSTITUTION:Resistance values for resistors R1-Rn are selected so that the weight of 1,2,-2<n-1> is applied to each input current of comparators. An input voltage is inputted to analog comparators 1Q-nQ in parallel through a resistor R0. The analog input voltage is converted into a current at the resistor R0 and compared with a reference current value. When an output terminal of the high- order bit goes to ''H'', a current with a weight comparable to the weight of the upper-order bit is added to the input side of all the analog comparaters having the low-order bit than the bit.
JP56097561A 1981-06-25 1981-06-25 Analog-to-digital converter Pending JPS57212823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56097561A JPS57212823A (en) 1981-06-25 1981-06-25 Analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56097561A JPS57212823A (en) 1981-06-25 1981-06-25 Analog-to-digital converter

Publications (1)

Publication Number Publication Date
JPS57212823A true JPS57212823A (en) 1982-12-27

Family

ID=14195640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56097561A Pending JPS57212823A (en) 1981-06-25 1981-06-25 Analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS57212823A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236413A (en) * 1987-03-25 1988-10-03 Mamoru Tanaka Analog-digital converter
FR2623034A1 (en) * 1987-11-10 1989-05-12 Thomson Hybrides Microondes CASCADE ANALOGUE-DIGITAL CONVERTER
JPH0195831U (en) * 1987-12-16 1989-06-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63236413A (en) * 1987-03-25 1988-10-03 Mamoru Tanaka Analog-digital converter
FR2623034A1 (en) * 1987-11-10 1989-05-12 Thomson Hybrides Microondes CASCADE ANALOGUE-DIGITAL CONVERTER
JPH0195831U (en) * 1987-12-16 1989-06-26

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