Charge distribution

摘要

A processing system for an input device includes a receiver module and a charge distributor. The receiver module includes a first charge integrator coupled to a first sensor electrode and configured to integrate a charge on the first sensor electrode. The charge distributor includes a current conveyor and a plurality of output stages coupled to the current conveyor, wherein a first output stage of the plurality of output stages comprises a plurality of current mirrors and is configured to output a first scaled mirrored charge to offset the charge integrated by the first charge integrator, wherein the first scaled mirrored charge is based on a charge signal provided via the current conveyor.

主权项

1. A processing system for an input device comprising:
a receiver module comprising a first charge integrator coupled to a first sensor electrode and configured to integrate a charge on said first sensor electrode; and a charge distributor comprising:
a current conveyor; anda plurality of output stages coupled to the current conveyor, wherein a first output stage of the plurality of output stages comprises a plurality of current mirrors and is configured to output a first scaled mirrored charge to offset said charge integrated by said first charge integrator, wherein said first scaled mirrored charge is based on a charge signal provided via said current conveyor.