AD82088-2x20W Stereo / 1x40W Mono Digital Audio Amplifier With 30 bands EQ and DRC Functions  DataSheet
Description
AD82088 is a digital audio amplifier capable of driving 20W (BTL) each to a pair of 8Ω load speaker and 40W (PBTL) to a 4Ω load speaker operating at 24V supply without external heat-sink or fan requirement with play music. AD82088 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 AD82088 from damage due to accidental erroneous operating condition. The full digital circuit design of AD82088 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. AD82088 is pop free during instantaneous power on/off or mute/shut down switching because of its robust built-in anti-pop circuit.
Features
l Supply voltage
3.3V for digital circuit
8V~26V for loudspeaker driver
l Supports 2.0CH/Mono configuration
l Loudspeaker output power@12V for stereo
7W x 2CH into 8Ω <1% THD+N
10W x 2CH into 4Ω <1% THD+N
l Loudspeaker output power@18V for stereo
15W x 2CH into 8Ω <1% THD+N
l Loudspeaker output power@24V for stereo
20W x 2CH into 8Ω <1% THD+N
l 16/18/20/24-bits input with I2S, Left-alignment and Right-alignment data format
l Multiple sampling frequencies (Fs)
32kHz / 44.1kHz / 48kHz and
64kHz / 88.2kHz / 96kHz and
128kHz / 176.4kHz / 192kHz
l System clock = 64x, 128x, 192x, 256x, 384x,
512x, 576x, 768x, 1024x Fs
MCLK system:
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
l 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
Applications
l TV audio
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