JPS5773525A - Single reference potential type digital-to-analogue converter - Google Patents

Single reference potential type digital-to-analogue converter

Info

Publication number
JPS5773525A
JPS5773525A JP14899580A JP14899580A JPS5773525A JP S5773525 A JPS5773525 A JP S5773525A JP 14899580 A JP14899580 A JP 14899580A JP 14899580 A JP14899580 A JP 14899580A JP S5773525 A JPS5773525 A JP S5773525A
Authority
JP
Japan
Prior art keywords
reference potential
capacitor
ground
switch
common electrode
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
JP14899580A
Other languages
Japanese (ja)
Inventor
Toshihiko Matsumura
Hirohisa Karibe
Hirokazu Fukui
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14899580A priority Critical patent/JPS5773525A/en
Publication of JPS5773525A publication Critical patent/JPS5773525A/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 achieve a DA converter which can output a bipolar analog voltage with a single reference potential, by providing a switch which can connect a common electrode of a capacitor array to a reference potential and ground. CONSTITUTION:A DA converter provided with capacitor arrays C1-Cn and switches SW1-SWn connecting then to a reference potential VR or ground, is provided with switches SW-R and SW-G which connect the common electrode of the capacitor array to the reference potential and ground. When an input terminal 3 is negative, first the switch SW-G is closed and a negative charge is held to the common electrode of a capacitor set according to the input signal, and after the switch SW-G is opened, the total capacitor is connected to ground to obtain a negative analog output 4. In the case of positive input, the same operation is made by the switch SW-R in place of the SW-G, and a positive charge is obtained at the common electrode of the capacitor and a positive voltage is achieved at an output terminal 4.
JP14899580A 1980-10-24 1980-10-24 Single reference potential type digital-to-analogue converter Pending JPS5773525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14899580A JPS5773525A (en) 1980-10-24 1980-10-24 Single reference potential type digital-to-analogue converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14899580A JPS5773525A (en) 1980-10-24 1980-10-24 Single reference potential type digital-to-analogue converter

Publications (1)

Publication Number Publication Date
JPS5773525A true JPS5773525A (en) 1982-05-08

Family

ID=15465343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14899580A Pending JPS5773525A (en) 1980-10-24 1980-10-24 Single reference potential type digital-to-analogue converter

Country Status (1)

Country Link
JP (1) JPS5773525A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2440770A (en) * 2006-08-11 2008-02-13 Sharp Kk Switched capacitor DAC

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2440770A (en) * 2006-08-11 2008-02-13 Sharp Kk Switched capacitor DAC
EP2050193A4 (en) * 2006-08-11 2010-09-29 Sharp Kk A display
US8421784B2 (en) 2006-08-11 2013-04-16 Sharp Kabushiki Kaisha Display

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