WFN218_WM8956_AW.qxp:flyer 18/9/06 16:06 Page 1 WM8956 Stereo Hi-fi DAC with 1W/Channel Speaker Driver Hi-fi stereo DAC with integrated Class D speaker drivers, delivering 1W per channel into 8Ω speakers. The WM8956 delivers 1W per channel of high quality audio using filterless Class D technology. This enables maximum efficiency, extends battery life, saves space and simplifies PCB design. Integrated 24-bit DACs, headphone amplifiers and a highly flexible analogue input structure provide a high level of integration for space-constrained portable applications. DGND LINPUT3/ JD2 DCVDD DBVDD SPKVDD1 WM8956 SPKVDD2 CLASS D LINPUT2 SPK_LP SPK_LN DAC DIGITAL FILTERS LINPUT1 STEREO MICROPHONE INTERFACE OUTPUT MIXERS DE-EMPHASIS INPUT MIXERS HP_L DAC OUT3 3D ENHANCE RINPUT1 DAC VOLUME HP_R RINPUT2 CLASS D RINPUT3/ JD3 SPK_RN SPK_RP SPKGND1 SPKGND2 SDIN CONTROL INTERFACE SCLK PLL MCLK DACDAT DACLRC DIGITAL AUDIO INTERFACE BCLK AVDD VMID AGND GPIO1 ADCREF, DACREF MICBIAS PRODUCT BENEFITS TARGET APPLICATIONS High fidelity quality audio Portable media players Extends battery life Games consoles Reduces external component count Multimedia phones High speaker power output In-car infotainment WFN218_WM8956_AW.qxp:flyer 18/9/06 16:07 Page 2 WM8956 Stereo Hi-fi DAC with 1W/Channel Speaker Driver PRODUCT FEATURES PRODUCT DETAILS 98dB DAC SNR HIGH QUALITY, HIGH POWER OUTPUT 1W/channel speaker driver The WM8956 is a stereo hi-fi DAC with stereo speaker and headphone drivers for portable multimedia devices requiring high quality at high output power and a longer battery life. Signal boost with no extra components >70dB PSRR <1uA leakage Flexible input mixing Headphone drivers Capless mode support Pop and click suppression Low jitter PLL LONGER BATTERY LIFE, SMALL SIZE Low leakage, excellent PSRR and fully internal signal boosting enable direct connection to a lithium battery. This saves power, maximises quality at high volume levels and reduces component count. Class D technology provides high power output at high levels of efficiency, extending battery life and simplifying PCB layout and thermal management issues. A 5x5mm QFN package provides a high level of integration and excellent thermal performance in a small footprint. REDUCED COMPONENT COUNT Stereo headphone drivers support capless mode, further reducing component count. Integrated pop and click suppression mechanisms remove the need for external speaker or headphone amplifiers. Full volume control Low noise MIC bias 3D stereo enhancement TOTAL HARMONIC DISTORTION VS OUTPUT POWER 20 10 THD+N / % RL=8Ω, f=1kHz 1 0.1 0.01 0.001 0.01 Power / W 0.1 SPKVDD = 5V 1 SPKVDD = 4.2V SPKVDD = 3.6V 2 3 SPKVDD = 3.3V WORLD HEADQUARTERS USA SALES OFFICE JAPAN SALES OFFICE ASIA PACIFIC SALES OFFICE Wolfson Microelectronics plc Wolfson Microelectronics, Inc. Wolfson Microelectronics plc Wolfson Microelectronics plc Westfield House 26 Westfield Road Edinburgh 16875 West Bernardo Drive Suite 280 6F Shinbashi 29 Mori Building 4-2-1 Shinbashi 2F, No.39, Alley 20 Lane 407, Sec. 2 San Diego EH11 2QB United Kingdom CA 92127 USA Minato-ku Tokyo 105-0004 Japan Tiding Boulevard, NeiHu District Taipei 114 Taiwan t: +44 (0) 131 272 7000 f: +44 (0) 131 272 7001 e: [email protected] t: +1 (0) 858 676 5090 f: +1 (0) 858 676 0484 e: [email protected] t: +81 (0) 3 5733 8677 f: +81 (0) 3 3578 1488 e: [email protected] t: +886 (0) 2 875 11600 f: +886 (0) 2 875 10201 e: [email protected] © COPYRIGHT 2006, WOLFSON MICROELECTRONICS PLC. and the wave logo are a registered trademark of Wolfson Microelectronics plc. All other trademarked names, whether indicated as such or not, are the property of their respective owners. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. Wolfson Microelectronics plc assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from the use of information contained in the document. For more information please visit www.wolfsonmicro.com or sign up for Wolfson eNews at http://www.wolfsonmicro.com/enews PO-FL-8956-09/06 www.wolfsonmicro.com CONTACT DETAILS