Electronic Design

Low-Power Audio DAC Extends Playback Time

Forecasting longer battery life and extended playback time, the WM8910 ultra low power audio DAC integrates a control-write sequencer to ensure ease of system design, and a ground-referenced headphone amp to improve pop-and-click performance and reduce component count. The device exploits the company’s SmartDAC technology, a low-power DAC capacitor switching architecture that enables a DAC-to-headphone power consumption of less than 4.5 mW. It also enlists the company’s Class W amplifier technology, an evolution of class G, which includes an adaptive dual-drive charge pump and DC servo circuit architecture. Available in a 40-pin, 5 mm x 5 mm QFN package, price is $1.66 each/1,000. WOLFSON MICROELECTRONICS PLC, San Diego, CA. (858) 676-5090.

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