描述 Description

This is a stereo (8Ω)/mono (4Ω) fully digital audio amplifier with output power which can drive up to 2x12W for stereo or 1x24W for mono at 24V supply voltage, no external heat-sink or fan is requirement.Using I2C digital control interface, AD82581B provides input format selection, mute and volume control function. Protection circuits are provided to protect AD82581B damage while connection error.

特性 Features

? 16/18/20/24-bit input with I2S, Left-alignment and Right-alignment data format
? PSNR & DR(A-weighting) Loudspeaker: 98dB (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 128kHz/176.4kHz/192kHz
? Supply voltage
3.3V for digital circuit
12V~24V for loudspeaker driver
? Loudspeaker output power for 24V
2×10W into 8?@0.19% THD+N for stereo
1×20W into 4?@0.18% THD+N for mono
? Loudspeaker output power for 24V with proper cooling method
2×26W into 8?@1% THD+N for stereo
1×53W into 4?@1% THD+N for mono
? Anti-pop design
? Over-temperature protection
? Internal PLL
? Under-voltage shutdown
? Over-current protection
? I2C control interface

應(yīng)用 Application

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