Differential charge sampling circuit with integrated faraday shield
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United States of America Patent
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Sep 24, 2024
Grant Date -
Oct 26, 2023
app pub date -
Aug 16, 2022
filing date -
Apr 25, 2022
priority date (Note) -
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Abstract
A sampling capacitor structure, which includes a Faraday Shield that can be switched between various nodes. In a switched capacitor circuit, this sampling capacitor structure allows for differential charging of the sampling capacitor while minimizing the effects of any parasitic stray capacitor. Furthermore, with appropriate switching of the Faraday Shield, once the differential charge sampling circuit samples the differential signal, this sampled differential charge can then be transferred to a downstream single-ended circuit, such as an integrator, without any loss of signal.
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