JPS57113619A - Analog-to-digital converter - Google Patents

Analog-to-digital converter

Info

Publication number
JPS57113619A
JPS57113619A JP9881A JP9881A JPS57113619A JP S57113619 A JPS57113619 A JP S57113619A JP 9881 A JP9881 A JP 9881A JP 9881 A JP9881 A JP 9881A JP S57113619 A JPS57113619 A JP S57113619A
Authority
JP
Japan
Prior art keywords
analog
signal
switching
noise
high frequency
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
JP9881A
Other languages
Japanese (ja)
Other versions
JPS6225292B2 (en
Inventor
Masataka Kono
Yasuo Shimada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9881A priority Critical patent/JPS57113619A/en
Publication of JPS57113619A publication Critical patent/JPS57113619A/en
Publication of JPS6225292B2 publication Critical patent/JPS6225292B2/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
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • H03M1/0827—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of electromagnetic or electrostatic field noise, e.g. preventing crosstalk by shielding or optical isolation
    • 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

Landscapes

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

Abstract

PURPOSE:To avoid the effect of switching noise, by converting an analog signal into a digital signal, when the operation is stable without noise at switching. CONSTITUTION:To isolate an analog data input with a transformer, a DC signal is converted into an AC signal, which is inputted to an isolation transformer, and the analog data transformed into AC is inputted to an A/D conversion circuit 4 through a synchronizing rectifying circuit 3 for DC, to make signal conversion of the analog data through an amplifier 2 and a digital data corresponding to the analog input is obtained. In this case, when a switching pulse of a switching power supply 6 is generated from a timing generating circuit 5, a high frequency switching noise is generated. But, the effect of high frequency switching noise can be omitted by generating a DC/AC conversion pulse at a stable region without this high frequency noise.
JP9881A 1981-01-06 1981-01-06 Analog-to-digital converter Granted JPS57113619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9881A JPS57113619A (en) 1981-01-06 1981-01-06 Analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9881A JPS57113619A (en) 1981-01-06 1981-01-06 Analog-to-digital converter

Publications (2)

Publication Number Publication Date
JPS57113619A true JPS57113619A (en) 1982-07-15
JPS6225292B2 JPS6225292B2 (en) 1987-06-02

Family

ID=11464620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9881A Granted JPS57113619A (en) 1981-01-06 1981-01-06 Analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS57113619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980034053A (en) * 1996-11-05 1998-08-05 이형도 Analog to Digital Inverter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55136716A (en) * 1979-04-12 1980-10-24 Mitsubishi Electric Corp Analog/digital conversion unit
JPS55137721A (en) * 1979-04-16 1980-10-27 Mitsubishi Electric Corp Analogue/digital conversion unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55136716A (en) * 1979-04-12 1980-10-24 Mitsubishi Electric Corp Analog/digital conversion unit
JPS55137721A (en) * 1979-04-16 1980-10-27 Mitsubishi Electric Corp Analogue/digital conversion unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980034053A (en) * 1996-11-05 1998-08-05 이형도 Analog to Digital Inverter

Also Published As

Publication number Publication date
JPS6225292B2 (en) 1987-06-02

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