The WM8912 is an ultra low power stereo digital/analog converter (DAC) with integrated ground-referenced headphone amplifiers that incorporate a dual-mode charge pump to optimize efficiency and power consumption during playback. The ground-referenced outputs eliminate headphone coupling capacitors and the outputs include common mode feedback paths to reject ground noise. Control sequences for audio path setup can be pre-loaded and executed by an integrated control write sequencer to reduce software driver development and minimize pops and clicks. The WM8912 can operate directly from a single 1.8 V switched supply, or for optimal power consumption, the digital core can be operated from a 1.0 V supply.
Features
Low 3.8 mW quiescent power consumption for DAC to headphone playback
Class W ground referenced headphone driver
28 mW per channel into 30 ω at <1% THD
32 mW per channel into 15 ω at <1% THD
Dynamic range controller
Re-tune mobile parametric equalizer
On-chip FLL provides all necessary clocks
32-pin QFN package
The WM8912 is an ultra low power stereo digital/analog converter (DAC) with integrated ground-referenced headphone amplifiers that incorporate a dual-mode charge pump to optimize efficiency and power consumption during playback. The ground-referenced outputs eliminate headphone coupling capacitors and the outputs include common mode feedback paths to reject ground noise. Control sequences for audio path setup can be pre-loaded and executed by an integrated control write sequencer to reduce software driver development and minimize pops and clicks. The WM8912 can operate directly from a single 1.8 V switched supply, or for optimal power consumption, the digital core can be operated from a 1.0 V supply.
Features
- Low 3.8 mW quiescent power consumption for DAC to headphone playback
- Class W ground referenced headphone driver
- 28 mW per channel into 30 Ω at <1% THD
- 32 mW per channel into 15 Ω at <1% THD
- Dynamic range controller
- Re-tune mobile parametric equalizer
- On-chip FLL provides all necessary clocks
- 32-pin QFN package
