esmt/emp AD82585 elite semiconductor memory technology inc./elite micropower inc. publication date: feb. 2013 revision: 0.2 1/38 2x20w stereo digital audio amplifier with drc features ? 16/18/20/24-bit input with i 2 s, left-alignment and right-alignment data format ? psnr & dr(a-weighting) loudspeaker: 94db (psnr), 106db (dr) @24v ? multiple sampling frequencies (fs) 32khz / 44.1khz / 48khz and 64khz / 88.2khz / 96khz and 128khz/176.4khz/192khz ? 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 128kh z/176.4khz/192khz ? supply voltage 3.3v for digital circuit 10v~26v for loudspeaker driver ? loudspeaker output power for 24v 10w x 2ch into 8 ? @0.16% thd+n for stereo 15w x 2ch into 8 ? @0.18% thd+n for stereo 20w x 2ch into 8 ? @0.24% thd+n for stereo ? sounds processing including: volume control (+24db~-103db, 0.125db/step) dynamic range control power clipping channel mixing user programmed noise gate with hysteresis window dc-blocking high-pass filter ? anti-pop design ? short circuit and over-temperature protection ? i 2 c control interface ? internal pll ? lv under-voltage shutdown and hv under-voltage detection ? power saving mode ? dynamic temperature control applications ? tv audio ? boom-box, cd and dvd receiver, docking system ? powered speaker ? wireless audio description AD82585 is a digital audio amplifier capable of driving a pair of 8 ? , 20w speaker which operate with play music at a 24v supply without external heat-sink or fan requirement. using i 2 c digital control interface, the user can control AD82585?s input format selection, mute and volume control functions. AD82585 has many built-in protection circuits to safeguard AD82585 from connection errors. ordering information product id package packing / mpq comments AD82585-lg48nay e-lqfp-48l (7x7 mm) 2.5k units / small box (250 units / tray, 10 trays / small box) green
esmt/emp AD82585 elite semiconductor memory technology inc./elite micropower inc. publication date: feb. 2013 revision: 0.2 2/38 pin assignment (top view) pin description pin name type description characteristics 1 la o left channel output a. 2 nc not connected. 3 vddla p left channel supply a. 4 nc not connected. 5 nc not connected. 6 nc not connected. 7 nc not connected. 8 clk_out o clock output from pll. ttl output buffer 9 dgnd p digital ground. 10 nc not connected. 11 nc not connected. 12 nc not connected. 13 dvdd p digital power. 14 error o error status, low active. open-drain output 15 mclk i master clock input. schmitt trigger ttl input buffer 16 nc not connected. 17 nc not connected. 18 nc not connected. 19 pd i power down, low active schmitt trigger ttl input buffer
esmt/emp AD82585 elite semiconductor memory technology inc./elite micropower inc. publication date: feb. 2013 revision: 0.2 3/38 20 lrcin i left/right clock input (fs). schmitt trigger ttl input buffer 21 bclk i bit clock input (64fs). schmitt trigger ttl input buffer 22 sdata i serial audio data input. schmitt trigger ttl input buffer 23 sda i/o i 2 c bi-directional serial data. schmitt trigger ttl input buffer 24 scl i i 2 c serial clock input. schmitt trigger ttl input buffer 25 reset i reset, low active. schmitt trigger ttl input buffer 26 nc not connected. 27 dvdd p digital power. 28 dgnd p digital ground. 29 nc not connected. 30 nc not connected. 31 nc not connected. 32 nc not connected. 33 nc not connected. 34 vddra p right channel supply a. 35 nc not connected. 36 ra o right channel output a. 37 gndr p right channel ground. 38 nc not connected. 39 rb o right channel output b. 40 nc not connected. 41 vddrb p right channel supply b. 42 nc not connected. 43 nc not connected. 44 vddlb p left channel supply b. 45 nc not connected. 46 lb o left channel output b. 47 nc not connected. 48 gndl p left channel ground.
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