GENERAL DESCRIPTION

The ADAU1702 is a complete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization, cross over, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening and can be used to compensate for real-world limitations of speakers, amplifiers, and listening environments, providing a dramatic improvements of perceived audio quality.

FEATURES

28-/56-bit, 25 MIPS digital audio processor

Two ADCs: SNR of 100 dB, THD + N of −83 dB

Four DACs: SNR of 104 dB, THD + N of −90 dB

Complete standalone operation

  Self-boot from serial EEPROM

  Auxiliary ADC with 4-input mux for analog control

  GPIOs for digital controls and outputs

Fully programmable with SigmaStudio™ graphical tool

28-bit × 28-bit multiplier with 56-bit accumulator for full double-precision processing

Clock oscillator for generating master clock from crystal

PLL for generating master clock from 64 × fS, 256 × fS, 384 × fS, or 512 × fS clocks

Flexible serial data input/output ports with I2S-compatible, left-justified, right-justified, and TDM modes

Sampling rates up to 192 kHz supported

On-chip voltage regulator for compatibility with 3.3 V systems

48-lead, plastic LQFP

APPLICATIONS

Multimedia speaker systems

MP3 player speaker docks

Automotive head units

Minicomponent stereos

Digital televisions

Studio monitors

Speaker crossovers

Musical instrument effects processors

In-seat sound systems (aircraft/motor coaches)