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 8Ω @0.09% THD+N
15W x 2CH into 8Ω @0.15% THD+N
25W x 2CH into 8Ω @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
Description
AD82584D is a digital audio amplifier capable of
driving 25W (BTL) each to a pair of 8Ω load speaker
and 50W (PBTL) to a 4Ω 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.