特性 Features

?16/18/20/24-bit input with I2

S, 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

10V~26V for loudspeaker driver

?Loudspeaker output power for Stereo@ 24V

10W x 2ch into 8Ω @ 0.16 THD+N

15W x 2ch into 8Ω @ 0.18 THD+N

20W x 2ch into 8Ω @ 0.24 THD+N

?Loudspeaker output power for Mono@ 24V

20W x 1ch into 4Ω @ 0.17 THD+N

30W x 1ch into 4Ω @ 0.2 THD+N

40W x 1ch into 4Ω @ 0.24 THD+N

?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

2C control interface with selectable device address

?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

描述 Description

AD82587D is a digital audio amplifier capable of

driving a pair of 8Ω,20W or a single 4Ω,40W speaker,

both which operate with play music at a 24V supply

without external heat-sink or fan requirement.

Using I2C digital control interface, the user can control

AD82587D’s input format selection, mute and volume

control functions. AD82587D has many built-in

protection circuits to safeguard AD82587D from

connection errors.