%0 Journal Article
%T A New Stray-Immune Interface Circuit for Capacitive Sensors<br>一种新的不受寄生电容影响的电容式传感器接口电路
%A Cao Xinping
%A Zhang Dacheng
%A Huang Ru
%A Zhang Xing
%A Wang Yangyuan
%A <br>曹新平
%A 张大成
%A 黄如
%A 张兴
%A 王阳元
%J 半导体学报
%D 2002
%I 
%X A novel interface circuit is presented to detect the minimal change of the differential capacitance.Based on the charge transfer circuit,the interface circuit introduces another charge transfer circuit detecting the reference differential capacitance.By differentially amplifying the output of the detecting and reference circuit,the interface circuit shows better stability and much higher sensitivity.At the same time,it keeps the characteristic of high immunity to parasitic capacitance.
%K differential capacitance
%K charge transfer circuit
%K interface circuit<br>微变电容
%K 电荷传送电路
%K 接口电路
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=025C8057C4D37C4BA0041DC7DE7C758F&aid=E5D8F2F1E46B59E2&yid=C3ACC247184A22C1&vid=EA389574707BDED3&iid=DF92D298D3FF1E6E&sid=1CBB73E9593E8833&eid=849F08713EB6820A&journal_id=1674-4926&journal_name=半导体学报&referenced_num=5&reference_num=5