JPS57171832A - Double integration analog-to-digital converter - Google Patents

Double integration analog-to-digital converter

Info

Publication number
JPS57171832A
JPS57171832A JP5748681A JP5748681A JPS57171832A JP S57171832 A JPS57171832 A JP S57171832A JP 5748681 A JP5748681 A JP 5748681A JP 5748681 A JP5748681 A JP 5748681A JP S57171832 A JPS57171832 A JP S57171832A
Authority
JP
Japan
Prior art keywords
period
constitution
integral
reference voltage
compensating voltage
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
JP5748681A
Other languages
Japanese (ja)
Inventor
Masakazu Mitamura
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.)
Advantest Corp
Original Assignee
Advantest Corp
Takeda Riken Industries 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 Advantest Corp, Takeda Riken Industries Co Ltd filed Critical Advantest Corp
Priority to JP5748681A priority Critical patent/JPS57171832A/en
Publication of JPS57171832A publication Critical patent/JPS57171832A/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
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • 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
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/52—Input signal integrated with linear return to datum

Landscapes

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

Abstract

PURPOSE:To generate no noise, and also to execute a nonlinear compensation comparatively exactly, by switching and superposing the compensating voltage to reference voltage in a period decided in advance in the second integral period. CONSTITUTION:A compensating voltage generating circuit 43 is provided so that its compensating voltage is superposed on reference voltage in a section decided in advance in the second integral period. According to such a constitution, its constitution is very simple comparing with the case when a period of a clock is varied in the second integral period, also there is no possibility that a noise goes into an integrator different from the case when an integral constant is switched, and also the reference voltage itself is not switched, therefore, even if accuracy and stability of a resistance value of a resistor constituting the compensating voltage generating circuit are comparatively low, a correct output is obtained.
JP5748681A 1981-04-15 1981-04-15 Double integration analog-to-digital converter Pending JPS57171832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5748681A JPS57171832A (en) 1981-04-15 1981-04-15 Double integration analog-to-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5748681A JPS57171832A (en) 1981-04-15 1981-04-15 Double integration analog-to-digital converter

Publications (1)

Publication Number Publication Date
JPS57171832A true JPS57171832A (en) 1982-10-22

Family

ID=13057038

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5748681A Pending JPS57171832A (en) 1981-04-15 1981-04-15 Double integration analog-to-digital converter

Country Status (1)

Country Link
JP (1) JPS57171832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296824A (en) * 1988-05-25 1989-11-30 Yokogawa Electric Corp A/d converter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942417A (en) * 1972-08-15 1974-04-22
JPS513768A (en) * 1974-06-29 1976-01-13 Omron Tateisi Electronics Co Ad henkankino chokusenhoseikairo
JPS52132763A (en) * 1976-04-30 1977-11-07 Yokogawa Hokushin Electric Corp Analog digital converter
JPS55104129A (en) * 1979-02-05 1980-08-09 Advantest Corp Analog-digital converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942417A (en) * 1972-08-15 1974-04-22
JPS513768A (en) * 1974-06-29 1976-01-13 Omron Tateisi Electronics Co Ad henkankino chokusenhoseikairo
JPS52132763A (en) * 1976-04-30 1977-11-07 Yokogawa Hokushin Electric Corp Analog digital converter
JPS55104129A (en) * 1979-02-05 1980-08-09 Advantest Corp Analog-digital converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296824A (en) * 1988-05-25 1989-11-30 Yokogawa Electric Corp A/d converter

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