DESCRIPTION

The WM8959 is an ultra-low power hi-fi DAC designed for multimedia handsets.

A powerful 1W speaker driver can operate in class D or AB modes, providing total flexibility to the system designer. Low leakage, high PSRR and pop/click suppression enable direct battery connection for the speaker supply.

FEATURES

? DAC SNR 99dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V

? Stereo microphone interface

? 1W Speaker driver

- 1W into 8? BTL speaker at <0.1 THD

- 80dB PSRR @ 217Hz

- <1uA leakage with direct battery connection

- Software-selectable class D or AB mode

- Filterless connection supported

? Headphone / ear speaker drivers

- 40mW output power into 16? at 3.3V

- Fully differential and capless modes supported

- Low noise, lower power received voice path

? Stereo or Mono differential line output

? Pop/Click suppression

? Powerful GPIO functions

? Ultra-low power consumption

- 8.3mW analogue voice call

- 13.7mW DAC playback to headphones

? On-chip PLL provides flexible clocking scheme

? Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz

? 42-ball WCSP package (3.226x3.44x0.7mm, 0.5mm pitch)

APPLICATIONS

? Multimedia phones

? GPS