Signal acquisition circuits and wearable devices

Abstract

Embodiments of the present disclosure provide a signal acquisition circuit. The signal acquisition circuit includes a differential amplifier, a first electrode, a second electrode, a first negative capacitance circuit, and a second negative capacitance circuit. The first electrode is connected to a first input terminal of the differential amplifier through a first lead, and the second electrode is connected to a second input terminal of the differential amplifier through a second lead. The first negative capacitance circuit is electrically connected to the first lead and ground, and the second negative capacitance circuit is electrically connected to the second lead and the ground. Both the first negative capacitance circuit and the second negative capacitance circuit exhibit a negative capacitance effect.

Dependencies are inferred from the claim text.