FAN3852 Microphone Pre-Amp with Digital Output

onsemi FAN3852 Microphone Pre-Amp with digital output is a single-chip solution that combines a pre-amplifier, a Low Dropout (LDO) regulator, and an Analog-to-Digital Converter (ADC). The FAN3852 is designed to convert Electret Condenser Microphone (ECM) output to a digital Pulse Density Modulation (PDM) data stream. The pre-amplifier accepts analog signals from the ECM, drives an over-sampled sigma-delta ADC, and outputs PDM data. The PDM digital audio has the advantage of noise rejection and is easy to interface with mobile handset processors.