Features

Supply voltage

3.3V for digital circuit

8V~26V for loudspeaker driver

Supports 2.0CH/Mono configuration

Loudspeaker output power@12V for stereo

7W x 2CH into 8Ω <1% THD+N

10W x 2CH into 4Ω <1% THD+N

Loudspeaker output power@18V for stereo

15W x 2CH into 8Ω <1% THD+N

Loudspeaker output power@24V for stereo

20W x 2CH into 8Ω <1% THD+N

16/18/20/24-bits input with I2

S, Left-alignment

and Right-alignment data format

 Multiple sampling frequencies (Fs)

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:

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

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

Supports I2C control without clock

I

2C control interface with selectable device

address

I

2

S output with selectable Audio DSP point

Support hardware and software reset

Internal PLL

Anti-pop design

Level meter and power meter

LV Under-voltage shutdown and HV Under-voltage

detection

 Over voltage protection

Short circuit and over-temperature protection

Applications

TV audio

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 I

2C 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