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Abstract

Applying positive and negative feedback voltages to an electromechanical sensor of a microphone utilizing a voltage-to-voltage converter to facilitate an improvement in sensitivity and reduction in distortion of the microphone is presented herein. A microphone comprises an electromechanical sensor comprising a capacitive sense element comprising a first sense node and a second sense node; and a voltage-to-voltage converter comprising an input, a first output, and a second output. The voltage-to-voltage converter forms, via a first capacitive coupling to the second sense node, a negative feedback loop between the first output of the voltage-to-voltage converter and the input of the voltage-to-voltage converter. The first sense node is electrically coupled to the input of the voltage-to-voltage converter, and the voltage-to-voltage converter forms, via a second capacitive coupling to the first sense node, a positive feedback loop between the second output of the voltage-to-voltage converter and the input of the voltage-to-voltage converter.

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First Claim