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发布者:来自网络 发布时间:2015-4-9 阅读:2330次    关键字: 音频功放
AD87588-2x20W Stereo Digital Audio Amplifier


AD87588-2x20W Stereo/1x40W Mono Digital Audio Amplifier With 20 Bands EQ Functions + Capless Line Driver DataSheet

Features
􀁺 16/18/20/24-bits input with I2S, 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, 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
􀁺 Loudspeaker output power for Stereo@24V
10W x 2ch into 8Ω @0.09% THD+N
15W x 2ch into 8Ω @0.13% THD+N
20W x 2ch into 8Ω @0.17% THD+N
􀁺 Loudspeaker output power for Mono@24V
20W x 1ch into 8Ω @0.06% THD+N
30W x 1ch into 8Ω @0.09% THD+N
40W x 1ch into 8Ω @0.12% THD+N
􀁺 Sound processing including:
20 bands parametric speaker EQ
Volume control (+24dB~-103dB, 0.125dB/step),
Dynamic range control (DRC)
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
􀁺 Support initial EEPROM setting

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

Description
The AD87588 is an integrated audio system
solution, embedding digital audio process, power
stage amplifier, and a stereo 3Vrms line driver.
AD87588 is a digital audio amplifier capable of driving
a pair of 8Ω, 20W or a single 4Ω, 40W operating at
24V supply. AD87588 is also capable of driving 4Ω,
10W (SE)x2 + 8Ω, 20W (BTL)x1 at 24V supply for
2.1CH application.
AD87588 can provide advanced audio processing
capabilities, such as volume control, 20 bands speaker
EQ, audio mixing, 3D surround and Dynamic Range
Control (DRC). These functions are fully
programmable via a simple I2C control interface.
Robust protection circuits are provided to protect
AD87588 from damage due to accidental erroneous
operating condition. AD87588 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. AD87588 is pop free during instantaneous
power switch because of its built-in, robust anti-pop
circuit.

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