The WM8731SEDS/RV is a Portable Internet Audio CODEC with headphone driver and programmable sample rates. It is designed specifically for portable MP3 audio and speech players and recorders and also ideal for MD, CD-RW machines and DAT recorders. Stereo line and mono microphone level audio inputs are provided, along with a mute function, programmable line level volume control and a bias voltage output suitable for an electret type microphone. Stereo audio outputs are buffered for driving headphones from a programmable volume control, line level outputs are also provided along with anti-thump mute and power up/down circuitry. The interface provides access to all features including volume controls, mutes, de-emphasis and extensive power management facilities.
Low power
8 to 96kHz ADC and DAC sampling frequency
Selectable ADC high pass filter
2 or 3-wire MPU Serial control interface
Programmable audio data interface modes
Microphone input and electret bias with side tone mixer
