WM8904CGEFL/RV Datasheet PDF - Wolfson Microelectronics

●DESCRIPTION

●The WM8904 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 headphone and line outputs eliminate AC coupling capacitors, and both outputs include common mode feedback paths to reject ground noise.

●FEATURES

●3.0mW quiescent power consumption for DAC to headphone playback

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

●ADC SNR 91dB typical, THD -80dB typical

●2.4mW quiescent power consumption for analogue bypass playback

●Control write 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

●32-pin QFN package (4 x 4mm, 0.4mm pitch)

●36-ball WLCSP package (2.6 x 2.5mm, 6 x 6 ball grid, 0.4mm pitch)