GENERAL DESCRIPTION

The ADAU1701 is a complete audio system-on-a-chip including a 28/56-bit audio DSP, ADCs and DACs, and microcontroller-like control interfaces. Signal processing includes equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker

compensation, and stereo image widening. These algorithms can be used to compensate for the real-world limitations of speakers, amplifiers, and listening environments, resulting in a dramatic improvement of perceived audio quality.

FEATURES

28/56-bit, 50 MHz digital audio processor

Stereo ADC: 100 dB SNR and -80 dB THD+N

4-channel DAC: 104 dB SNR and -90 dB THD+N

Complete stand-alone operation

• Self-boot from serial EEPROM

• Auxiliary ADC with four-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 × fSclocks

Flexible serial data I/O 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 LQFP plastic package