2x20W Stereo / 1x40W Mono Digital Audio Amplifier
With 24 Bands EQ Functions

 

Features

16/18/20/24-bits input with I2S, Left-alignment
and Right-alignment data format

PSNR & DR(A-weighting)
Loudspeaker: 99dB (PSNR), 110dB (DR) @24V

Multiple sampling frequencies (Fs)
32kHz / 44.1kHz / 48kHz and
64kHz / 88.2kHz / 96kHz and
128kHz / 176.4kHz / 192kHz

I2C control interface

Channel mixing

Volume control (+12dB ~ -103dB, 0.125dB/step)

Power clipping function

DRC and DTC function

24 bands parametric speaker EQ

DRC and post scale boost

Check-sum coefficient protection

Noise gate function

Pop noise less muting (Quick Mute/Quick Start)

Sleep function

X3 over sampling for 32kHz FS

AM interference frequency switching

Level meter

Post-scale and DRC offset volume support

Over current protection function (OCP)

Over temperature protection function (OTP)

Under voltage lockout (UVLO)

Over voltage protection function (OVP)

DC detection function (DCDET)

Clock detection function (CKDET)

Lead-free LQFP48
Applications

TV audio

Boom-box, CD and DVD receiver, docking system

Powered speaker

Wireless audioDescription
AD82589 is an integrated audio system solution,
embedding digital audio processing power stage
amplifier.
AD82589 has a programmable slew-rate
controlled output buffer, which drives one (mono) or
two (stereo) speakers directly. In addition, it is
insusceptible to supply voltage fluctuation due to the
close-loop design.
AD82589 can provide advanced audio processing
capabilities, such as volume control, 24 bands EQ,
audio mixing and Dynamic Range Control (DRC).
These functions are fully programmable via a simple
I2C interface.
Robust protection circuits are provided to protect
AD82589 from damage due to accidental erroneous
operation. AD82589, being a digital circuit design, 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. Furthermore, AD82589 is pop
free during instantaneous power switching because of
its built-in, robust anti-pop circuit.