C0402C225M9PAC Datasheet PDF - Wolfson Microelectronics

●DESCRIPTION

●The WM8903 is a high performance ultra-low power stereo CODEC optimised for portable audio applications. The device features stereo ground-referenced headphone amplifiers using the Wolfson ‘Class W’ amplifier techniques - incorporating an innovative dual-mode charge pump

●architecture - to optimise efficiency and power consumption during playback. The ground-referenced outputs eliminate headphone coupling capacitors. Both headphone and line

●outputs include common mode feedback paths to reject ground noise.

●FEATURES

●4.5mW power consumption for DAC to headphone playback

●DAC SNR 96dB typical, THD -86dB typical

●ADC SNR 92dB typical, THD -80dB typical

●Control sequencer for pop minimised start-up and shutdown

●Single register write for default start-up sequence

●Integrated FLL provides all necessary clocks

●  -  Self-clocking modes allow processor to sleep

●  -  All standard sample rates from 8kHz to 96kHz

●Stereo digital microphone input

●3 single ended inputs per stereo channel

●1 fully differential mic / line input per stereo channel

●Digital Dynamic Range Controller (compressor / limiter)

●Digital sidetone mixing

●Ground-referenced headphone driver

●Ground-referenced line outputs

●Stereo differential line driver for direct interface to WM9001speaker driver

●40-pin QFN package (5x5mm)