Sense circuit for piezoresistive sensor, circuit including array of piezoresistive sensors, and operation method thereof

A sense circuit for a piezoresistive sensor is provided that comprises: an energy storage circuit coupled to the piezoresistive sensor via a first node; a charge control circuit coupled to the first node and configured to charge the energy storage circuit to a predetermined potential; a discharge co...

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Bibliographische Detailangaben
Hauptverfasser: Guo, Yuzhen, Ding, Xiaoliang, Wang, Pengpeng, Cao, Xueyou, Cheng, Chihjen
Format: Patent
Sprache:eng
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Zusammenfassung:A sense circuit for a piezoresistive sensor is provided that comprises: an energy storage circuit coupled to the piezoresistive sensor via a first node; a charge control circuit coupled to the first node and configured to charge the energy storage circuit to a predetermined potential; a discharge control circuit configured to allow the energy storage circuit to discharge through the piezoresistive sensor; and a readout circuit coupled to the first node and configured to output a sensed voltage based on a level of charges stored by the energy storage circuit.