Harness, Dickey & Pierce, P.L.C.
Front-end circuit performing analog-to-digital conversion and touch processing circuit including the same
A touch processing circuit includes: a front-end circuit including an amplifier, a first capacitor, a second capacitor, a third capacitor, and a plurality of switches each having two ends that are selectively connected each other, the front-end circuit being configured to process an input signal varying according to a touch; and a controller controlling the plurality of switches so that the front-end circuit is configured as a first circuit that accumulates deviation of the input signal between a first phase and a second phase during an integration period and a second circuit that converts the accumulated deviation into a digital signal during a conversion period.
Samsung Electronics Co., Ltd.
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Minsung Jungmoon Sanho
Kim Kim Byun