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AD82584F 帶I2S輸出,用于智能音箱語音辨識的2x25W立體聲數(shù)字音頻功放
文章來源:永阜康科技 更新時間:2018/3/2 14:50:00
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AD82584F-2x25W Stereo/1x50W Mono Digital Audio Amplifier With 30 bands EQ and DRC Functions

Description

AD82584F is a digital audio amplifier capable of driving 25W (BTL) each to a pair of 8 load speaker and 50W (PBTL) to a 4 load speaker operating at 24V supply without external heat-sink or fan requirement with play music. AD82584F provides advanced audio processing functions, such as volume control, 30 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 AD82584F from damage due to accidental erroneous operating condition. The full digital circuit design of AD82584F 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. AD82584F 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: 108dB (PSNR), 108dB (DR)@24V  Multiple sampling frequencies (Fs) 8kHz and 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 MCLK system: 256x~1024x Fs for 8kHz 64x~1024x Fs for 32kHz / 44.1kHz / 48kHz 64x~512x Fs for 64kHz / 88.2kHz / 96kHz 64x~256x Fs for 128kHz / 176.4kHz / 192kHz BCLK system: 64xFs for 32kHz / 44.1kHz / 48kHz 64xFs for 64kHz / 88.2kHz / 96kHz 64xFs for 128kHz / 176.4kHz / 192kHz  Supply voltage 3.3V for digital circuit 8V~26V for loudspeaker driver  Supports 2.0CH/Mono configuration  Loudspeaker output power@12V for stereo 1W x 2CH into 6 <0.1% THD+N 9W x 2CH into 6 <1% THD+N  Loudspeaker output power@18V for stereo 15W x 2CH into 6 <1% THD+N  Loudspeaker output power@24V for stereo 25W x 2CH into 8 <1% THD+N  Sound processing including: 30 bands parametric speaker EQ Volume control (+24dB~-103dB, 0.125dB/step) Dynamic range control Three Band plus post Dynamic range control Power Clipping Programmed 3D surround sound Channel mixing Noise gate with hysteresis window Bass/Treble tone control DC-blocking high-pass filter Pre-scale/post-scale  Anti-pop design  Level meter and power meter   I2S output with selectable Audio DSP point  Short circuit and over-temperature protection  Supports I2C control without clock  I2C control interface with selectable device address  Support hardware and software reset  Internal PLL  LV Under-voltage shutdown and HV Under-voltage detection   Over voltage protection  Power saving mode

Applications

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

 
 
 
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