WM8959 - Wolfson Microelectronics plc

WM8959 Mobile Multimedia DAC

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. A flexible input configuration supports two microphone input.

Features

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• DAC SNR 99dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V Stereo microphone interface 1W Speaker driver - 1W into 8Ω 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 16Ω 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 D.