Invention Grant
- Patent Title: Capacitance to voltage converter with a leakage compensation loop
- Patent Title (中): 具有漏电补偿回路的电容电压转换器
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Application No.: US14947908Application Date: 2015-11-20
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Publication No.: US09455668B1Publication Date: 2016-09-27
- Inventor: Marco Garbarino , Andrea Donadel
- Applicant: STMICROELECTRONICS S.R.L.
- Applicant Address: IT Agrate Brianza
- Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee Address: IT Agrate Brianza
- Agency: Seed IP Law Group PLLC
- Main IPC: H03F3/52
- IPC: H03F3/52 ; H03F1/02 ; H03F3/45
Abstract:
A method and apparatus for compensating current leakage is disclosed. In the method and apparatus, a differential amplifier receives a first input signal and a second input signal and outputs a first output signal and a second output signal. The first output signal is filtered to obtain a first filtered signal. The first filtered signal is compared to the first input signal and a first compensation signal is outputted having a first voltage that is a function of a difference between a voltage of the first filtered signal and a voltage of the first input signal. Current leakage in the first input signal is compensated for using the first compensation signal.
Information query
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