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