JPS60132035U - Multi-channel analog input circuit - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

図面は本考案の一実施例を示す回路図である。　　、１
．２・・・アナログ信号源、３，４・・−ＣＲフィルタ
回回路５１，５゜、６ｔ　、６゜、　　１２Ｐ、　　１
２゜・・・コンデンサ、７・・・マルチプレクサ、１１
・・・バッファアンプ。The drawing is a circuit diagram showing an embodiment of the present invention. ,1
．． 2... Analog signal source, 3, 4...-CR filter circuit 51, 5°, 6t, 6°, 12P, 1
2゜... Capacitor, 7... Multiplexer, 11
...buffer amplifier.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 各アナログ信号源の両極出力信号線間に夫々接続されて
中性点が基準電位に接続される第１の直列コンデンサと
、上記各信号線の信号をフィルタ回回路を介して各チャ
ンネル入力として両極切換えで切換入力として取込むマ
ルチプレクサと、このマルチプレクサの出力信号線間に
接続されて中性点が基準電位に接続される第２の直列コ
ンデンサと、上記マルチプレクサの出力信号線の信号を
差動入力としてアナログ出力を得るバッファアンプとを
備えｔこことを特徴とする多チヤンネルアナログ入力回
路。A first series capacitor is connected between the bipolar output signal lines of each analog signal source, and the neutral point is connected to the reference potential, and the signal from each of the signal lines is passed through a filter circuit as an input to each channel. A multiplexer that is input as a switching input by switching, a second series capacitor that is connected between the output signal lines of this multiplexer and whose neutral point is connected to the reference potential, and a differential input that receives the signal of the output signal line of the multiplexer. A multi-channel analog input circuit comprising: a buffer amplifier for obtaining an analog output;