Touch sensing circuit and related touch sensitive device with noise cancellation capabilities

Abstract

A touch sensing circuit includes a plurality of receiving circuits. Each of the plurality of receiving circuits is coupled to a respective one of a plurality of sensing electrodes of a touch panel. Each of the plurality of receiving circuits comprises: a preceding integrator and a following integrator. The preceding integrator is, coupled to the respective one of the plurality of sensing electrodes and configured to generate a first integration signal. The following integrator is coupled to the preceding integrator and configured to generate a second integration signal based on the first integration signal generated by the preceding integrator in a same receiving circuit, and the first integration signal generated by the preceding integrator in an adjacent receiving circuit.

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