AD82571

ESMT/EMP Features Preliminary AD82571 2x10W Stereo / 1x20W Mono Digital Audio Amplifier z Zero detection z Power limit function z Quaternary and ternary switch z 16/18/20/24-bit input with I S, Left-alignment and Right-alignment data format z PSNR & DR (A-weighting) Loudspeaker: 97dB (PSNR), 101dB (DR) @18V z Multiple sampling frequencies (Fs) 32kHz / 44.1kHz / 48kHz and 64kHz / 88.2kHz / 96kHz and 128kHz/176.4kHz/192kHz z System clock = 64x, 128x, 256x, 384x, 512x, 768x, 1024x Fs 256x~1024x Fs for 32kHz / 44.1kHz / 48kHz 128x~512x Fs for 64kHz / 88.2kHz / 96kHz 64x~256x Fs for 128kHz/176.4kHz/192kHz z Supply voltage 3.3V for digital circuit 12V~18V for loudspeaker driver z Loudspeaker output power for 18V 10W x 2CH into 8Ω @0.35% THD+N for stereo 20W x 1CH into 4Ω @0.32% THD+N for mono z Anti-pop design z Over-temperature protection z Internal PLL z Under-voltage shutdown z Over-current protection z I2C control interface 2 Applications z CD and DVD z LCD TV z Car audio z Boom-box z MP3 docking systems z Powered speaker z Wireless audio z USB speaker Description AD82571 is a digital audio amplifier capable of driving a pair of 8Ω,10W or a single 4Ω,20W speaker, both which operate at a 18V supply without external heat-sink or fan requirement. Using I2C digital control interface, the user can control AD82571’s input format selection, mute and volume control functions. AD82571 has many built-in protection circuits to safeguard AD82571 from connection errors. ORDERING INF...