JPS56104532A - Digital-analog converting circuit - Google Patents

Digital-analog converting circuit

Info

Publication number
JPS56104532A
JPS56104532A JP759880A JP759880A JPS56104532A JP S56104532 A JPS56104532 A JP S56104532A JP 759880 A JP759880 A JP 759880A JP 759880 A JP759880 A JP 759880A JP S56104532 A JPS56104532 A JP S56104532A
Authority
JP
Japan
Prior art keywords
switch
conversion
capacitors
closed
fixed time
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
JP759880A
Other languages
Japanese (ja)
Inventor
Hirohiko Yoshioka
Isami Okuda
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.)
TOSHIN PROD KK
TOUSHIN PURODAKUTSU KK
Original Assignee
TOSHIN PROD KK
TOUSHIN PURODAKUTSU KK
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 TOSHIN PROD KK, TOUSHIN PURODAKUTSU KK filed Critical TOSHIN PROD KK
Priority to JP759880A priority Critical patent/JPS56104532A/en
Publication of JPS56104532A publication Critical patent/JPS56104532A/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

Landscapes

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

Abstract

PURPOSE:To reduce the error caused by a capacity error of a capacitor, by replacing the two capacitors that distribute the electric charge into 1/2 for weighting to carry out the D/A conversion twice and then averaging the output of conversion. CONSTITUTION:The charge is carried out by closing the switch 3 for a fixed time when the LSB is ''1'' and after discharging the capacitors 1 and 2 by turning on the switches 4 and 6. Then the switch 5 is closed for a fixed time, and the electric charge is distributed by 1/2. The switch 4 closes for a fixed time when the next bit is ''0'' to reduce the electric charge of the capacitor 1 down to 1/2. The same procedure is given up to the MSB, and then the switch 8 is closed to hold the conversion output by the sample holder 9. After this, the switch 7a is switched to replace the capacitors 1 and 2 and thus carry out the same conversion. Then the switches 10 and 5 are closed to average the twice conversion outputs. Thus the analog output is obtained.
JP759880A 1980-01-25 1980-01-25 Digital-analog converting circuit Pending JPS56104532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP759880A JPS56104532A (en) 1980-01-25 1980-01-25 Digital-analog converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP759880A JPS56104532A (en) 1980-01-25 1980-01-25 Digital-analog converting circuit

Publications (1)

Publication Number Publication Date
JPS56104532A true JPS56104532A (en) 1981-08-20

Family

ID=11670232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP759880A Pending JPS56104532A (en) 1980-01-25 1980-01-25 Digital-analog converting circuit

Country Status (1)

Country Link
JP (1) JPS56104532A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834624A (en) * 1981-08-25 1983-03-01 Toko Inc D/a converter
JPS5848525A (en) * 1981-09-18 1983-03-22 Fujitsu Ltd Capacitive type potential dividing circuit
JPS6029057A (en) * 1983-07-19 1985-02-14 Pioneer Electronic Corp Digital/analog converter
JPS63217829A (en) * 1987-03-06 1988-09-09 Nec Corp Switched capacitor circuit
WO2008065771A1 (en) * 2006-11-30 2008-06-05 Panasonic Corporation Sampling switch and pipeline a/d converter
JP2010022047A (en) * 2007-08-01 2010-01-28 Denso Corp Variable gain amplifier and d/a converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5483757A (en) * 1977-12-16 1979-07-04 Toko Inc Ad converter
JPS5499554A (en) * 1978-01-23 1979-08-06 Toko Inc Logarithmic compression da converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5483757A (en) * 1977-12-16 1979-07-04 Toko Inc Ad converter
JPS5499554A (en) * 1978-01-23 1979-08-06 Toko Inc Logarithmic compression da converter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5834624A (en) * 1981-08-25 1983-03-01 Toko Inc D/a converter
JPS5848525A (en) * 1981-09-18 1983-03-22 Fujitsu Ltd Capacitive type potential dividing circuit
JPS6029057A (en) * 1983-07-19 1985-02-14 Pioneer Electronic Corp Digital/analog converter
JPH0531852B2 (en) * 1983-07-19 1993-05-13 Pioneer Electronic Corp
JPS63217829A (en) * 1987-03-06 1988-09-09 Nec Corp Switched capacitor circuit
WO2008065771A1 (en) * 2006-11-30 2008-06-05 Panasonic Corporation Sampling switch and pipeline a/d converter
JP2010022047A (en) * 2007-08-01 2010-01-28 Denso Corp Variable gain amplifier and d/a converter

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