发明名称 |
Device for reading a quantity of electric charge |
摘要 |
An analog device for reading a quantity of electric charge, for example, in a transversal charge transfer filter. The device includes a capacitor and two MOS transistors which are connected in series to the point in the filter where the charge is to be read. The capacitor is connected to the common point of the two transistors which are controlled in phase opposition to insure charging of the capacitor. The capacitor maintains a potential at the charge reading point constant. Any variation in the quantity of charge under an electrode is converted into a variation of potential at the common point and this forms the read signal which is detected by means of a third MOS transistor.
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申请公布号 |
US4377760(A) |
申请公布日期 |
1983.03.22 |
申请号 |
US19800152350 |
申请日期 |
1980.05.22 |
申请人 |
THOMPSON-CSF |
发明人 |
BENOIT-GONIN, ROGER;BERGER, JEAN-LUC;FONTANES, SYLVAIN;PICQUENDAR, JEAN-EDGAR |
分类号 |
G01R29/24;(IPC1-7):H03K5/19;H03K5/15;G01R19/00;H03H15/00 |
主分类号 |
G01R29/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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