JPS57152220A - D/a converter - Google Patents

D/a converter

Info

Publication number
JPS57152220A
JPS57152220A JP3633681A JP3633681A JPS57152220A JP S57152220 A JPS57152220 A JP S57152220A JP 3633681 A JP3633681 A JP 3633681A JP 3633681 A JP3633681 A JP 3633681A JP S57152220 A JPS57152220 A JP S57152220A
Authority
JP
Japan
Prior art keywords
switches
capacitors
conversion
digital signal
increase
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.)
Granted
Application number
JP3633681A
Other languages
Japanese (ja)
Other versions
JPH0147942B2 (en
Inventor
Takeshi Shima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3633681A priority Critical patent/JPS57152220A/en
Publication of JPS57152220A publication Critical patent/JPS57152220A/en
Publication of JPH0147942B2 publication Critical patent/JPH0147942B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To improve conversion precision and to increase a conversion speed by using capacitors, provided corresponding to respective bits of a digital signal, and three switch groups in combination. CONSTITUTION:Capacitors 11a-11f provided in correspondence with respective bits of a digital signal have the same capacity, and are charged successively by constant-current sources 17a-17f through switches A1-A6. Switches C1-C6 initialize those capacitors prior to charging. Switches B1-B5 distributes the charge of each capacitor to the low-order capacitor starting at a low-order bit side. Those switches are controlled by a switch control circuit 18. Thus, the capacitors have the same capacity and conversion processing is carried out on pipeline basis to improve conversion precision and to increase a conversion speed.
JP3633681A 1981-03-13 1981-03-13 D/a converter Granted JPS57152220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3633681A JPS57152220A (en) 1981-03-13 1981-03-13 D/a converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3633681A JPS57152220A (en) 1981-03-13 1981-03-13 D/a converter

Publications (2)

Publication Number Publication Date
JPS57152220A true JPS57152220A (en) 1982-09-20
JPH0147942B2 JPH0147942B2 (en) 1989-10-17

Family

ID=12466979

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3633681A Granted JPS57152220A (en) 1981-03-13 1981-03-13 D/a converter

Country Status (1)

Country Link
JP (1) JPS57152220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63203013A (en) * 1987-02-18 1988-08-22 Nec Ic Microcomput Syst Ltd D-a converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461452A (en) * 1977-10-26 1979-05-17 Hitachi Ltd Multi voltage generating circuit
JPS5556728A (en) * 1978-10-24 1980-04-25 Chiyou Lsi Gijutsu Kenkyu Kumiai D/a converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5461452A (en) * 1977-10-26 1979-05-17 Hitachi Ltd Multi voltage generating circuit
JPS5556728A (en) * 1978-10-24 1980-04-25 Chiyou Lsi Gijutsu Kenkyu Kumiai D/a converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63203013A (en) * 1987-02-18 1988-08-22 Nec Ic Microcomput Syst Ltd D-a converter

Also Published As

Publication number Publication date
JPH0147942B2 (en) 1989-10-17

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