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发布者:来自网络 发布时间:2014-5-22 阅读:4290次    关键字: 音频功放
AD82587D-2X20W Stereo/1X40W Mono Audio Amplifier


AD82587D-2X20W Stereo/1X40W Mono Digital Audio Amplifier DataSheet

Description
    AD82587D is a digital audio amplifier capable of driving a pair of 8Ω,20W or a single 4Ω,40W speaker,both which operate with play music at a 24V supply without external heat-sink or fan requirement. Using I2C digital control interface, the user can control AD82587D’s input format selection, mute and volume control functions. AD82587D has many built-in protection circuits to safeguard AD82587D from connection errors.

Features
􀁺 16/18/20/24-bit 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, 256x, 384x, 512x, 768x,
1024x Fs
256x~1024x Fs for 32kHz / 44.1kHz / 48kHz
128x~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 @ 0.16% THD+N
15W x 2ch into 8Ω @ 0.18% THD+N
20W x 2ch into 8Ω @ 0.24% THD+N
􀁺 Loudspeaker output power for Mono@ 24V
20W x 1ch into 4Ω @ 0.17% THD+N
30W x 1ch into 4Ω @ 0.2% THD+N
40W x 1ch into 4Ω @ 0.24% THD+N
􀁺 Sounds processing including:
Volume control (+24dB~-103dB, 0.125dB/step)
Dynamic range control
Power clipping
Channel mixing
User programmed noise gate with hysteresis window
DC-blocking high-pass filter
􀁺 Anti-pop design
􀁺 Short circuit and over-temperature protection
􀁺 I2C control interface with selectable device address
􀁺 Internal PLL
􀁺 LV Under-voltage shutdown and HV Under-voltage detection
􀁺 Power saving mode
􀁺 Dynamic temperature control

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

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