Capacitive Linearization Method Applied to MEMS Microphones Systems

A microphone includes a microelectromechanical system (MEMS) device responsive to sound waves or vibrations having an output coupled to a first node; a programmable gain amplifier or source follower having an input coupled to a second node, and an output for generating an analog signal, wherein the MEMS device output and the programmable gain amplifier or source follower input comprise a first nonlinear equivalent capacitance having a first capacitance-to-voltage (CV) profile; and a nonlinear capacitance component coupled to the first node, the second node, and at least one reference voltage node, wherein the nonlinear capacitance component comprises a second nonlinear equivalent capacitance having a second CV profile.