
Wolfson Microelectronics plc
productfeatures
> cd quality audio performance
» dac 100dB snr, 88dB thd (‘A’ weighted @ 48kHz)
» adc 97dB snr, 85dB thd (WM8731 only)
> independent stereo line and headphone outputs
» headphone output power: 40mW on 16Ω load
» volume and mute controls
> low supply voltage
» 1.42 – 3.6V digital supply
» 1.8 – 3.6V analogue supply for low-voltage parts
» 2.7 – 3.6V analogue supply for standard parts
> very low power
» playback only: 9mW @ 1.8V, 18mW @ 3.3V
» simultaneous playback & record: 18mW @ 1.8V, 36mW @ 3.3V
» standby: 30µW
> programmable sample rates :: 8, 32, 44.1, 48, 88.2, 96kHz
> on-chip clock generator (WM8711 and WM8731 only)
> programmable audio data interface
» i2s, left/right justified or dsp modes
» 16/20/24/32-bit word lengths
» master or slave clocking mode
> 2 or 3-wire serial control interface
> temperature range :: –10°C to +70°C
productapplications
> mp3 players and recorders
> mobile information devices
> palmtops
> web browsers
> mobile phones with mp3
> digital camcorders and cameras
> usb headsets
>> all battery powered systems incorporating digital audio