JPS55143829A - Digital-analogue converter - Google Patents

Digital-analogue converter

Info

Publication number
JPS55143829A
JPS55143829A JP5195179A JP5195179A JPS55143829A JP S55143829 A JPS55143829 A JP S55143829A JP 5195179 A JP5195179 A JP 5195179A JP 5195179 A JP5195179 A JP 5195179A JP S55143829 A JPS55143829 A JP S55143829A
Authority
JP
Japan
Prior art keywords
capacitor
capacitors
electric charge
resolution
converter
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
JP5195179A
Other languages
Japanese (ja)
Inventor
Kunihiko Yoshimura
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
Original Assignee
NEC 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 Electric Co Ltd filed Critical NEC Corp
Priority to JP5195179A priority Critical patent/JPS55143829A/en
Publication of JPS55143829A publication Critical patent/JPS55143829A/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

Landscapes

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

Abstract

PURPOSE:To make it possible to form a high-resolution D/A converter easily by using two capacitors of the same capacity and an integrating circuit. CONSTITUTION:Electric charge of capacitor C1 is divided into two equally by connecting capacitor C1 in parallel to capacitor C2 of the same capacity, and this connection is cut again. All electric charge divided into two is transferred to capacitor C3 by differential amplifier 20 which is subjected to feedback by capacitor C3. If this operation is repeated n-number times, Q/2n of electric charge is transferred at the n-th operation. Consequently, when a control circuit is provided which supplies a digital signal through switch SW1 or SW2 and controls respective switches, Vout which was subjected to D/A conversion can be obtained. Since error of linearity of this D/A converter is dependent upon only capacitors C1 and C2, resolution can be improved by matching of capacities of two capacitors.
JP5195179A 1979-04-26 1979-04-26 Digital-analogue converter Pending JPS55143829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5195179A JPS55143829A (en) 1979-04-26 1979-04-26 Digital-analogue converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5195179A JPS55143829A (en) 1979-04-26 1979-04-26 Digital-analogue converter

Publications (1)

Publication Number Publication Date
JPS55143829A true JPS55143829A (en) 1980-11-10

Family

ID=12901175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5195179A Pending JPS55143829A (en) 1979-04-26 1979-04-26 Digital-analogue converter

Country Status (1)

Country Link
JP (1) JPS55143829A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812424A (en) * 1981-07-15 1983-01-24 Toko Inc Sequential comparison type a/d converter
JPS5847206A (en) * 1981-09-16 1983-03-18 Toshiba Mach Co Ltd Device for measuring picture area rate in platemaking films
JPS58115925A (en) * 1981-12-29 1983-07-09 Pioneer Electronic Corp Digital-to-analog converter
JPS58161533A (en) * 1982-03-19 1983-09-26 Pioneer Electronic Corp Digital-analog converter
JPS63501836A (en) * 1985-10-02 1988-07-21 ヒユ−ズ・エアクラフト・カンパニ− 1-bit digital-to-analog converter and pipeline digital-to-analog converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117535A (en) * 1976-03-26 1977-10-03 Ibm Device for generating electric signal level of sequence in binary reduction

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117535A (en) * 1976-03-26 1977-10-03 Ibm Device for generating electric signal level of sequence in binary reduction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812424A (en) * 1981-07-15 1983-01-24 Toko Inc Sequential comparison type a/d converter
JPS6322647B2 (en) * 1981-07-15 1988-05-12 Eastern Steel
JPS5847206A (en) * 1981-09-16 1983-03-18 Toshiba Mach Co Ltd Device for measuring picture area rate in platemaking films
JPS58115925A (en) * 1981-12-29 1983-07-09 Pioneer Electronic Corp Digital-to-analog converter
JPS58161533A (en) * 1982-03-19 1983-09-26 Pioneer Electronic Corp Digital-analog converter
JPS63501836A (en) * 1985-10-02 1988-07-21 ヒユ−ズ・エアクラフト・カンパニ− 1-bit digital-to-analog converter and pipeline digital-to-analog converter
JPH0373181B2 (en) * 1985-10-02 1991-11-21 Hughes Aircraft Co

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