发明名称 |
Buffer circuit with differential structure for measurement of capacitive charges |
摘要 |
In a buffer with an operational amplifier having two inputs and two outputs and two feedback capacitances are inserted two other capacitances which in the measurement stage are switched in parallel to the feedback ones with opposite sign in such a manner as to cancel out the effects on the output voltage signal.
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申请公布号 |
US4609877(A) |
申请公布日期 |
1986.09.02 |
申请号 |
US19850795834 |
申请日期 |
1985.11.07 |
申请人 |
SGS MICROELETTRONICA S.P.A. |
发明人 |
NICOLLINI, GERMANO;SENDEROWICZ, DANIEL;CONFALONIERI, PIERANGELO |
分类号 |
H03F3/72;G01R29/24;H03F3/70;(IPC1-7):H03F3/45 |
主分类号 |
H03F3/72 |
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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