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| Wolfson's New Hi-Fi Audio DAC With Class D Speaker Amp Wolfson Microelectronics is targeting the pocket multimedia market with a highly efficient stereo DAC with integrated 1W Class D stereo speaker driver and capless headphone output offering outstanding audio quality. The new WM8956, the latest Wolfson product with integrated Class D technology, is aimed at mobile phones, solid-state media players, portable DVD, games consoles and other similar battery operated devices that require exceptional sound quality combined with low power consumption. A key feature of the WM8956 is the efficiency of its Class D speaker amplifiers, which achieve 87% at full power. This efficiency is delivered with uncompromised audio performance and just 0.03% total harmonic distortion at 1W per channel into an 8 ohm load. DAC and headphone playback power consumption is just 10mW while offering 98dB SNR. The WM8956 offers many other features that help the designer reduce power consumption and system component count. The device itself replaces four discrete parts: speaker driver, audio DAC, headphone and microphone amplifiers. Low leakage, excellent PSRR and Wolfson pop and click suppression technology allow direct battery connection to the speaker supply. Flexible speaker boost settings allow speaker output power to be maximized while minimizing other analog supply currents. Unused functions can be disabled by using software control to save power. The WM8956 supports differential microphone and line inputs specifically for baseband processors in mobile phones as well as offering a flexible analog mixer for stereo and mono inputs and outputs for other applications. It also features built-in 3D audio enhancement. write your comments about the article :: © 2006 Computing News :: home page |