AN-1181 – Using a MEMS Microphone in a 2-Wire Microphone Circuit

AN-1181 – Using a MEMS Microphone in a 2-Wire Microphone Circuit

Overview

MEMS microphones are being used to replace electret condenser microphones (ECMs) in audio circuits. These two types of microphones perform the same function, but the connection between the microphone and the rest of the system is different for ECMs and MEMS microphones. This application note explains those differences and provides design details for a simple MEMS microphone based replacement circuit.

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