JPS6355634U - - Google Patents

Info

Publication number
JPS6355634U
JPS6355634U JP14936786U JP14936786U JPS6355634U JP S6355634 U JPS6355634 U JP S6355634U JP 14936786 U JP14936786 U JP 14936786U JP 14936786 U JP14936786 U JP 14936786U JP S6355634 U JPS6355634 U JP S6355634U
Authority
JP
Japan
Prior art keywords
circuit
ladder resistance
successive approximation
output
resistance 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.)
Granted
Application number
JP14936786U
Other languages
English (en)
Other versions
JPH0430831Y2 (ja
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 filed Critical
Priority to JP1986149367U priority Critical patent/JPH0430831Y2/ja
Publication of JPS6355634U publication Critical patent/JPS6355634U/ja
Application granted granted Critical
Publication of JPH0430831Y2 publication Critical patent/JPH0430831Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Description

【図面の簡単な説明】
第1図は本考案の実施例に係る逐次比較型A/
D変換回路の回路構成図、第2図は従来の逐次比
較型A/D変換回路の回路構成図である。 AD…逐次比較型A/D変換回路、LR…ラダ
ー抵抗回路、A2…コンパレータ、C…制御回路
、E2…プルダウン用電源、A4…検出回路、S
1…スイツチ回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 ラダー抵抗回路と、このラダー抵抗回路の出力
    と外部機器に接続される信号入力端子からの入力
    信号とを比較するコンパレータと、このコンパレ
    ータの出力レベルを判別して前記ラダー抵抗回路
    へ逐次比較データを出力する制御回路とを備えた
    逐次比較型A/D変換回路において、 前記信号入力端子を負の低電圧に設定するプル
    ダウン用電源と、 前記入力信号端子の開放に伴なう電圧低下を検
    出する検出回路と、 この検出回路から出力される検出信号に応答し
    て前記ラダー抵抗回路の出力を前記プルダウン用
    電源の負の低電圧に固定するスイツチ回路と、 を備えることを特徴とする逐次比較型A/D変換
    回路。
JP1986149367U 1986-09-29 1986-09-29 Expired JPH0430831Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986149367U JPH0430831Y2 (ja) 1986-09-29 1986-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986149367U JPH0430831Y2 (ja) 1986-09-29 1986-09-29

Publications (2)

Publication Number Publication Date
JPS6355634U true JPS6355634U (ja) 1988-04-14
JPH0430831Y2 JPH0430831Y2 (ja) 1992-07-24

Family

ID=31064506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986149367U Expired JPH0430831Y2 (ja) 1986-09-29 1986-09-29

Country Status (1)

Country Link
JP (1) JPH0430831Y2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55166334A (en) * 1979-06-13 1980-12-25 Hitachi Ltd Analog-digital converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55166334A (en) * 1979-06-13 1980-12-25 Hitachi Ltd Analog-digital converter

Also Published As

Publication number Publication date
JPH0430831Y2 (ja) 1992-07-24

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