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发布者:来自网络 发布时间:2014/5/22 阅读:4016次    关键字: 音频功放
AD82584-2x20W Stereo/1x 40W Mono Audio Amplifier


AD82584-2x20W Stereo/1x 40W Mono Digital Audio Amplifier With 20 bands EQ Functions, DRC and 2.1CH Mode DataSheet

Description
    AD82584 is a digital audio amplifier capable of driving 15W (BTL) each to a pair of 8Ω load speaker and 30W (PBTL) to a 4Ω load speaker operating at 24V supply without external heat-sink or fan requirement with play music. AD82584 is also capable of driving 4Ω, 10W (SE)x2 + 8Ω, 20W (BTL)x1 at 24V supply for 2.1CH application.
    AD82584 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 AD82584 from damage due to
accidental erroneous operating condition. The full digital circuit design of AD82584 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. AD82584 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: 96dB (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 8Ω @0.24% THD+N
15W x 2CH into 8Ω @0.3% THD+N
20W x 2CH into 8Ω @0.38% 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
 I2C control interface with selectable device address
 Support 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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