特性 Features

z 16/18/20/24-bits input with I2

S, Left-alignment

and Right-alignment data format

z PSNR & DR(A-weighting)

Loudspeaker: 98dB (PSNR), 108dB (DR) @24V

z Multiple sampling frequencies (Fs)

32kHz / 44.1kHz / 48kHz and

64kHz / 88.2kHz / 96kHz and

128kHz / 176.4kHz / 192kHz

z System clock = 64x, 128x, 192x, 256x, 384x,

512x, 576x, 768x, 1024x Fs

64x~1024x Fs for 32kHz / 44.1kHz / 48kHz

64x~512x Fs for 64kHz / 88.2kHz / 96kHz

64x~256x Fs for 128kHz / 176.4kHz / 192kHz

z Supply voltage

3.3V for digital circuit

8V~26V for loudspeaker driver

z Supports 2.0CH/Mono configuration

z Loudspeaker output power@24V for stereo

10W x 2CH into 8? @0.09 THD+N

15W x 2CH into 8? @0.15 THD+N

25W x 2CH into 8? @0.28 THD+N

z Sound processing including：

16 bands parametric speaker EQ

Volume control (+24dB~-103dB, 0.125dB/step)

Dynamic range control

Dual Band Dynamic range control

Power Clipping

3D surround sound

Channel mixing

Noise gate with hysteresis window

Bass/Treble tone control

Bass management crossover filter

DC-blocking high-pass filter

z Anti-pop design

z Short circuit and over-temperature protection

z Supports I2

C control without MCLK

z I2

C control interface with selectable device

address

z Support BCLK system

z Support hardware and software reset

z Internal PLL

z LV Under-voltage shutdown and HV Under-voltage

detection

z Power saving mode

Applications

z TV audio

z Boom-box, CD and DVD receiver, docking system

z Powered speaker

z Wireless audio

描述 Description

AD82584D is a digital audio amplifier capable of

driving 25W (BTL) each to a pair of 8? load speaker

and 50W (PBTL) to a 4? load speaker operating at

24V supply without external heat-sink or fan

requirement with play music.

AD82584D can provide advanced audio

processing functions, such as volume control, 16 EQ

bands, audio mixing, 3D surround sound and Dynamic

Range Control (DRC). These are fully programmable

via a simple I2

C control interface. Robust protection

circuits are provided to protect AD82584D from

damage due to accidental erroneous operating

condition. The full digital circuit design of AD82584D is

more tolerant to noise and PVT (Process, Voltage, and

Temperature) variation than the analog class-AB or

class-D audio amplifier counterpart implemented by

analog circuit design. AD82584D is pop free during

instantaneous power on/off or mute/shut down

switching because of its robust built-in anti-pop circuit.