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JPS55114035A - A/d converter circuit - Google Patents

A/d converter circuit

Info

Publication number
JPS55114035A
JPS55114035A JP1976579A JP1976579A JPS55114035A JP S55114035 A JPS55114035 A JP S55114035A JP 1976579 A JP1976579 A JP 1976579A JP 1976579 A JP1976579 A JP 1976579A JP S55114035 A JPS55114035 A JP S55114035A
Authority
JP
Japan
Prior art keywords
misfets
threshold level
circuit
gates
common
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
JP1976579A
Other languages
Japanese (ja)
Inventor
Kazuyuki Miyazawa
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.)
CHIYOU LSI GIJUTSU KENKYU KUMIAI
Original Assignee
CHIYOU LSI GIJUTSU KENKYU KUMIAI
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 CHIYOU LSI GIJUTSU KENKYU KUMIAI filed Critical CHIYOU LSI GIJUTSU KENKYU KUMIAI
Priority to JP1976579A priority Critical patent/JPS55114035A/en
Publication of JPS55114035A publication Critical patent/JPS55114035A/en
Pending legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE: To realize high-input impedance and also to simplify a circuit by applying an analog signal in common to gates of MISFETs made different in threshold level by a structural method or circuit method, and by converting it into a digital signal by a combination of respective drain outputs.
CONSTITUTION: To gates of driving MISFETs Q01∼Q0n, made different in threshold level by a structural method, constituting inverter circuits together with load MISFETs Q01'∼Q0n', analog signal Ain is applied in common and outputs O1∼ On of respective inverter circuits mentioned above are inputted to encoder circuit 1 to obtain digital signals D1∼D8. As for the method of making MISFETs Q01∼ Q0n different in threshold level by the structural method, there are several methods of letting channel area surfaces of MISFETs Q01∼Q0n differ in semiconductor impurity concentration by ion-implanting or by making use of correlation between channel length and threshold level.
COPYRIGHT: (C)1980,JPO&Japio
JP1976579A 1979-02-23 1979-02-23 A/d converter circuit Pending JPS55114035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1976579A JPS55114035A (en) 1979-02-23 1979-02-23 A/d converter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1976579A JPS55114035A (en) 1979-02-23 1979-02-23 A/d converter circuit

Publications (1)

Publication Number Publication Date
JPS55114035A true JPS55114035A (en) 1980-09-03

Family

ID=12008424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1976579A Pending JPS55114035A (en) 1979-02-23 1979-02-23 A/d converter circuit

Country Status (1)

Country Link
JP (1) JPS55114035A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912679A (en) * 1982-07-13 1984-01-23 Seiko Instr & Electronics Ltd Portable liquid crystal television
JPS60149253U (en) * 1984-03-14 1985-10-03 横河電機株式会社 Isolated A/D converter
JPS61242419A (en) * 1985-04-19 1986-10-28 Matsushita Electric Ind Co Ltd Ternal input discriminating circuit
JPH02151125A (en) * 1988-12-01 1990-06-11 Nec Corp A-d converter
JPH0496136U (en) * 1991-08-01 1992-08-20
WO2008093899A1 (en) * 2007-02-01 2008-08-07 Niigata Seimitsu Co., Ltd. Analog-to-digital converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5252356A (en) * 1975-10-24 1977-04-27 Mitsubishi Electric Corp A-d converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5252356A (en) * 1975-10-24 1977-04-27 Mitsubishi Electric Corp A-d converter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5912679A (en) * 1982-07-13 1984-01-23 Seiko Instr & Electronics Ltd Portable liquid crystal television
JPS60149253U (en) * 1984-03-14 1985-10-03 横河電機株式会社 Isolated A/D converter
JPS61242419A (en) * 1985-04-19 1986-10-28 Matsushita Electric Ind Co Ltd Ternal input discriminating circuit
JPH02151125A (en) * 1988-12-01 1990-06-11 Nec Corp A-d converter
JPH0496136U (en) * 1991-08-01 1992-08-20
WO2008093899A1 (en) * 2007-02-01 2008-08-07 Niigata Seimitsu Co., Ltd. Analog-to-digital converter

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