Cirrus Logic Inc.

Vikrant Arumugam

John L Melanson

Johann Guy Gaboriau

Zhong You

Vamsikrishna Parupalli

Amar Vellanki

A method may include applying an excitation signal to a capacitor of the capacitive sensor which causes generation of a modulated signal from an input signal indicative of a variance in a capacitance of the capacitor, detecting the modulated signal with a detector to generate a detected modulated signal that has a phase shift relative to the excitation signal, demodulating the detected modulated signal into an in-phase component and a quadrature component using a reference signal, nullifying the quadrature component by setting a phase of the reference signal relative to the excitation signal to compensate for the phase shift, and outputting the in-phase component as an unmodulated output signal representative of the capacitance.

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Cedar Park, TX, United States of America

Vikrant Arumugam