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JPS57123732A - Digital-to-analog converting circuit - Google Patents

Digital-to-analog converting circuit

Info

Publication number
JPS57123732A
JPS57123732A JP894681A JP894681A JPS57123732A JP S57123732 A JPS57123732 A JP S57123732A JP 894681 A JP894681 A JP 894681A JP 894681 A JP894681 A JP 894681A JP S57123732 A JPS57123732 A JP S57123732A
Authority
JP
Japan
Prior art keywords
control signal
terminal
ground
output voltage
converting circuit
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
JP894681A
Other languages
Japanese (ja)
Inventor
Shosaku Tsukagoshi
Seiji Okamoto
Atsushi Iwata
Kazuo Yamakido
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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Hitachi Ltd, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Hitachi Ltd
Priority to JP894681A priority Critical patent/JPS57123732A/en
Publication of JPS57123732A publication Critical patent/JPS57123732A/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
    • H03M1/74—Simultaneous conversion
    • H03M1/80—Simultaneous conversion using weighted impedances

Landscapes

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

Abstract

PURPOSE:To obtain a bipolar analog output voltage by a unipolar reference voltage by disconnecting one terminal of a capacitor from a ground at the 2nd potential of the 1st control signal and by grounding one terminal of the capacitor at the 2nd potential of the 2nd control signal. CONSTITUTION:When fresh data is set in a buffer register 127 from an input terminal 132 for a PCM signal while synchronizing with a synchronizing signal, switches 111-118 which correspond to sign bits A2-A4 are set by a control signal 130 from a code converting circuit 128 while a switch 101 is placed at a ground side. Then, the switch 101 is disconnected from the ground and the switches 111-118 are all connected to the side of line l101 by the control signal 130. Thus, an output voltage Vx which has an absolute value equal to and the opposite polarity to an analog voltage value corresponding to the sign bits A2- A4 is developed at the upper electrodes of capacitors 103-110. A sample holding circuit 102 is placed in a sampling state to obtain the analog output voltage at an output terminal 133.
JP894681A 1981-01-26 1981-01-26 Digital-to-analog converting circuit Pending JPS57123732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP894681A JPS57123732A (en) 1981-01-26 1981-01-26 Digital-to-analog converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP894681A JPS57123732A (en) 1981-01-26 1981-01-26 Digital-to-analog converting circuit

Publications (1)

Publication Number Publication Date
JPS57123732A true JPS57123732A (en) 1982-08-02

Family

ID=11706830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP894681A Pending JPS57123732A (en) 1981-01-26 1981-01-26 Digital-to-analog converting circuit

Country Status (1)

Country Link
JP (1) JPS57123732A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408550A1 (en) * 1983-03-08 1984-09-13 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa C-R TYPE D / A CONVERTER
JPS6264128A (en) * 1985-07-15 1987-03-23 ブルツクトリ−　コ−ポレ−シヨン Converter between digital value and analog value
JPH0349192U (en) * 1989-09-21 1991-05-13
WO2006075769A1 (en) * 2005-01-12 2006-07-20 Sharp Kabushiki Kaisha A digital to analogue converter
US7796074B2 (en) 2005-04-05 2010-09-14 Sharp Kabushiki Kaisha Digital/analogue converter, converter arrangement and display

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195282A (en) * 1978-02-01 1980-03-25 Gte Laboratories Incorporated Charge redistribution circuits
JPS55165027A (en) * 1979-06-11 1980-12-23 Nippon Telegr & Teleph Corp <Ntt> A/d converter circuit
JPS5773524A (en) * 1980-10-24 1982-05-08 Fujitsu Ltd Single reference potential type digital-to-analog converter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195282A (en) * 1978-02-01 1980-03-25 Gte Laboratories Incorporated Charge redistribution circuits
JPS55165027A (en) * 1979-06-11 1980-12-23 Nippon Telegr & Teleph Corp <Ntt> A/d converter circuit
JPS5773524A (en) * 1980-10-24 1982-05-08 Fujitsu Ltd Single reference potential type digital-to-analog converter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408550A1 (en) * 1983-03-08 1984-09-13 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa C-R TYPE D / A CONVERTER
JPS6264128A (en) * 1985-07-15 1987-03-23 ブルツクトリ−　コ−ポレ−シヨン Converter between digital value and analog value
JPH0349192U (en) * 1989-09-21 1991-05-13
WO2006075769A1 (en) * 2005-01-12 2006-07-20 Sharp Kabushiki Kaisha A digital to analogue converter
JP2008527763A (en) * 2005-01-12 2008-07-24 シャープ株式会社 Digital / analog converter
US7741985B2 (en) 2005-01-12 2010-06-22 Sharp Kabushiki Kaisha Digital to analogue converter
US7796074B2 (en) 2005-04-05 2010-09-14 Sharp Kabushiki Kaisha Digital/analogue converter, converter arrangement and display

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