JPS57143921A - Analog-to-digital converting circuit - Google Patents

Analog-to-digital converting circuit

Info

Publication number
JPS57143921A
JPS57143921A JP2971281A JP2971281A JPS57143921A JP S57143921 A JPS57143921 A JP S57143921A JP 2971281 A JP2971281 A JP 2971281A JP 2971281 A JP2971281 A JP 2971281A JP S57143921 A JPS57143921 A JP S57143921A
Authority
JP
Japan
Prior art keywords
signal
digital signal
circuit
comparing circuit
input terminal
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
JP2971281A
Other languages
Japanese (ja)
Inventor
Shigenori Kodama
Yoshikatsu Sato
Hiromichi Jumonji
Masami Kihara
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2971281A priority Critical patent/JPS57143921A/en
Publication of JPS57143921A publication Critical patent/JPS57143921A/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
    • H03M1/66—Digital/analogue converters
    • H03M1/82—Digital/analogue converters with intermediate conversion to time interval

Landscapes

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

Abstract

PURPOSE:To obtain high conversion precision without the bit-by-bit adjustment of an input digital signal, by using a counting circuit which sends out a digital signal and a comparing circuit which compares the signal with the input digital signal. CONSTITUTION:A parallel digital signal (a) from an input terminal 1 is led to one input terminal of a comparing circuit 12. To the other input terminal of the comparing circuit 12, a parallel digital signal (b) is supplied from a counting circuit 11 which counts a clock signal (c) that an oscillating circuit 10 generates. The comparing circuit 12 compares the values of those two digital signals (a) and (b) with each other to send out an output signal (f) which consists of prescriber-voltage pulses when a>b, or has a zero voltage when a<=b. The signal (f) is an analog signal (h) having only a DC component extracted through an LPF13 and is outputted from an output terminal 2.
JP2971281A 1981-03-02 1981-03-02 Analog-to-digital converting circuit Pending JPS57143921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2971281A JPS57143921A (en) 1981-03-02 1981-03-02 Analog-to-digital converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2971281A JPS57143921A (en) 1981-03-02 1981-03-02 Analog-to-digital converting circuit

Publications (1)

Publication Number Publication Date
JPS57143921A true JPS57143921A (en) 1982-09-06

Family

ID=12283714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2971281A Pending JPS57143921A (en) 1981-03-02 1981-03-02 Analog-to-digital converting circuit

Country Status (1)

Country Link
JP (1) JPS57143921A (en)

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