JPS5624825A - Analog-digital converting circuit - Google Patents

Analog-digital converting circuit

Info

Publication number
JPS5624825A
JPS5624825A JP10163679A JP10163679A JPS5624825A JP S5624825 A JPS5624825 A JP S5624825A JP 10163679 A JP10163679 A JP 10163679A JP 10163679 A JP10163679 A JP 10163679A JP S5624825 A JPS5624825 A JP S5624825A
Authority
JP
Japan
Prior art keywords
operational amplifier
input
polarity
analog
shifts
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
JP10163679A
Other languages
Japanese (ja)
Inventor
Miharu Nagatomi
Hiroshi Tokumatsu
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP10163679A priority Critical patent/JPS5624825A/en
Publication of JPS5624825A publication Critical patent/JPS5624825A/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
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To make it possible to widen the permissible input range of an A/D converter without nonlinear quantization, by providing an operational amplifier with a DC shifting method that shifts its output voltage in terms of direct current. CONSTITUTION:Polarity deciding circuit 14 decides the sign of an input signal and input changeover method 7 changes over the polarity of an input to the operational amplifier. Further, level detecting circuit 8 detects the magnitude of the input signal being above its criterion and DC shifting method 20 shifts the output voltage of operational amplifier 9 in terms of direct current. The sum of outputs of operational amplifier 9, level detecting circuit 8 and polarity deciding circuit 14 is a digital signal.
JP10163679A 1979-08-08 1979-08-08 Analog-digital converting circuit Pending JPS5624825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10163679A JPS5624825A (en) 1979-08-08 1979-08-08 Analog-digital converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10163679A JPS5624825A (en) 1979-08-08 1979-08-08 Analog-digital converting circuit

Publications (1)

Publication Number Publication Date
JPS5624825A true JPS5624825A (en) 1981-03-10

Family

ID=14305877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10163679A Pending JPS5624825A (en) 1979-08-08 1979-08-08 Analog-digital converting circuit

Country Status (1)

Country Link
JP (1) JPS5624825A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872218A (en) * 1981-10-26 1983-04-30 Hitachi Ltd Controlling device for air conditioner
JPS5994439U (en) * 1982-12-15 1984-06-27 株式会社島津製作所 AD conversion device
JPS59160317A (en) * 1983-03-02 1984-09-11 Yokogawa Hokushin Electric Corp Analog/digital converter
JPS62188430A (en) * 1986-02-13 1987-08-18 Clarion Co Ltd Analog-digital converter
JPS6438030U (en) * 1987-08-27 1989-03-07
JPH0745000A (en) * 1993-07-28 1995-02-14 Nippon Columbia Co Ltd Device for sound recording/reproducing digital audio

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872218A (en) * 1981-10-26 1983-04-30 Hitachi Ltd Controlling device for air conditioner
JPS5994439U (en) * 1982-12-15 1984-06-27 株式会社島津製作所 AD conversion device
JPS59160317A (en) * 1983-03-02 1984-09-11 Yokogawa Hokushin Electric Corp Analog/digital converter
JPS62188430A (en) * 1986-02-13 1987-08-18 Clarion Co Ltd Analog-digital converter
JPS6438030U (en) * 1987-08-27 1989-03-07
JPH0745000A (en) * 1993-07-28 1995-02-14 Nippon Columbia Co Ltd Device for sound recording/reproducing digital audio

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