ECM digital microphone temperature compensation

摘要

This document discusses, among other things, systems and methods to at least partially compensate for temperature sensitivity in a digital microphone system including, for example, a temperature sensitive membrane, such as an electrets condenser microphone (ECM).

主权项

1. A system, comprising:
a temperature compensation circuit for a digital microphone system, the temperature compensation circuit including:
a temperature dependent component configured to provide a first reference with respect to a temperature independent voltage reference; anda voltage divider configured to provide second and third references with respect to the temperature independent voltage reference, wherein the temperature compensation circuit is configured to provide a voltage reference configured to at least partially compensate for a temperature sensitivity of a digital microphone system using the third reference and a difference between the first and second references.