JPS55136717A - Analog/digital converter - Google Patents

Analog/digital converter

Info

Publication number
JPS55136717A
JPS55136717A JP4557379A JP4557379A JPS55136717A JP S55136717 A JPS55136717 A JP S55136717A JP 4557379 A JP4557379 A JP 4557379A JP 4557379 A JP4557379 A JP 4557379A JP S55136717 A JPS55136717 A JP S55136717A
Authority
JP
Japan
Prior art keywords
lds
level
resistor
anl
lcs
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
JP4557379A
Other languages
Japanese (ja)
Other versions
JPS6011494B2 (en
Inventor
Hitoshi Takase
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP4557379A priority Critical patent/JPS6011494B2/en
Publication of JPS55136717A publication Critical patent/JPS55136717A/en
Publication of JPS6011494B2 publication Critical patent/JPS6011494B2/en
Expired 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
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter

Landscapes

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

Abstract

PURPOSE:To enable accurate and stable A/D conversion, by making agreement the range of output voltage of level comparator with the power supply voltage of the resistor ladder circuit and connecting the output terminals of the comparator and ladder circuit with resistors. CONSTITUTION:The switches 10, 11... of the resistor ladder circuit 1 are ON or OFF in a given sequence with the code produced with the digital signal generation circuit 3, and the output LDS of the circuit 1 is increased. While LDS is lower than the analog input ANL, the output LCS of the level comparator 2 is at the level of -V, -V is fed to the resistor r, and it determines the slope of LDS. When LDS is in excess of ANL, LCS is at high level V, V is fed to the resistor r, LDS is level up to the positive side and increased surely than ANL by that value. Thus, LCS is not fallen under the low level and can keep the high level as it is.
JP4557379A 1979-04-13 1979-04-13 Analog/digital converter Expired JPS6011494B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4557379A JPS6011494B2 (en) 1979-04-13 1979-04-13 Analog/digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4557379A JPS6011494B2 (en) 1979-04-13 1979-04-13 Analog/digital converter

Publications (2)

Publication Number Publication Date
JPS55136717A true JPS55136717A (en) 1980-10-24
JPS6011494B2 JPS6011494B2 (en) 1985-03-26

Family

ID=12723081

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4557379A Expired JPS6011494B2 (en) 1979-04-13 1979-04-13 Analog/digital converter

Country Status (1)

Country Link
JP (1) JPS6011494B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296822A (en) * 1988-05-25 1989-11-30 Toshiba Corp Analog-digital converter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0423184U (en) * 1990-06-15 1992-02-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01296822A (en) * 1988-05-25 1989-11-30 Toshiba Corp Analog-digital converter

Also Published As

Publication number Publication date
JPS6011494B2 (en) 1985-03-26

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