AD82581-2x10W Stereo/1x20W Mono Digital Audio Amplifier DataSheet

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Description
    AD82581 is a digital audio amplifier capable of driving a pair of 8Ω,10W or a single 4Ω,20W speaker, both which operate at a 24V supply without external
heat-sink or fan requirement. Using I2C digital control interface, the user can control AD82581’s input format selection, mute and volume control functions. AD82581 has many built-in protection circuits to safeguard AD82581 from connection errors.

Features
􀁺 16/18/20/24-bit input with I2S, Left-alignment and Right-alignment data format
􀁺 PSNR & DR (A-weighting) Loudspeaker: 97dB (PSNR), 105dB (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 128kHz/176.4kHz/192kHz
􀁺 Supply voltage
3.3V for digital circuit
12V~24V for loudspeaker driver
􀁺 Loudspeaker output power for 24V
10W x 2CH into 8Ω @0.27% THD+N for stereo
12W x 2CH into 8Ω @0.3% THD+N for stereo
15W x 1CH into 4Ω @0.2% THD+N for mono
20W x 1CH into 4Ω @0.25% THD+N for mono
􀁺 Anti-pop design
􀁺 Over-temperature protection
􀁺 Internal PLL
􀁺 Under-voltage shutdown
􀁺 Over-current protection
􀁺 I2C control interface
􀁺 Zero detection
􀁺 Power limit function
􀁺 Quaternary and ternary switch

Applications
􀁺 CD and DVD
􀁺 LCD TV
􀁺 Car audio
􀁺 Boom-box
􀁺 MP3 docking systems
􀁺 Powered speaker
􀁺 Wireless audio
􀁺 USB speaker