Synaptics Incorporated
Impedance ratio-based current conveyor

Abstract:

An input device associated with a sensing region is disclosed. The input device includes: a first sensor electrode associated with the sensing region and configured to propagate a resulting signal; an first auxiliary component configured to generate an output using a scaled signal; and a first impedance ratio-based current conveyor coupled to the first sensor electrode and including: a staging circuit configured to generate an input signal using the resulting signal and a ratio of a first impedance to a second impedance; and a set of current mirrors configured to generate the scaled signal from the input signal.