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发布者:来自网络 发布时间:2014/7/8 阅读:4405次    关键字: 音频功放
AD52584D-2x20W Stereo/40W Mono Digital音频功放


AD52584D-2x20W Stereo / 1x 40W Mono Digital Audio Amplifier With 20 bands EQ Functions, DRC and 2.1CH Mode DataSheet

Description
    AD82584D is a digital audio amplifier capable of
driving 15W (BTL) each to a pair of 8 load speaker
and 30W (PBTL) to a 4 load speaker operating at
24V supply without external heat-sink or fan
requirement with play music. AD82584D is also
capable of driving 4, 10W (SE)x2 + 8, 20W (BTL)x1
at 24V supply for 2.1CH application.
    AD82584D can provide advanced audio
processing functions, such as volume control, 20 EQ
bands, audio mixing, 3D surround sound and Dynamic
Range Control (DRC). These are fully programmable
via a simple I2C 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.

Features
 16/18/20/24-bits input with I2S, Left-alignment
and Right-alignment data format
 PSNR & DR(A-weighting)
Loudspeaker: 98dB (PSNR), 108dB (DR) @24V
 Multiple sampling frequencies (Fs)
32kHz / 44.1kHz / 48kHz and
64kHz / 88.2kHz / 96kHz and
128kHz / 176.4kHz / 192kHz
 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
 Supply voltage
3.3V for digital circuit
10V~26V for loudspeaker driver
 Supports 2.0CH/2.1CH/Mono configuration
 Loudspeaker output power@24V for stereo
10W x 2CH into 8 @0.09% THD+N
15W x 2CH into 8 @0.15% THD+N
20W x 2CH into 8 @0.2% THD+N
 Sound processing including􀎚
20 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
 Anti-pop design
 Short circuit and over-temperature protection
 Supports I2C control without MCLK
 I2C control interface with selectable device
address
 Support BCLK systemSupport hardware and software reset
 Internal PLL
 LV Under-voltage shutdown and HV Under-voltage
detection
 Power saving mode

Applications
 TV audio
 Boom-box, CD and DVD receiver, docking system
 Powered speaker
 Wireless audio

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