GENERAL DESCRIPTION
The ADAU1401A is a complete, single-chip audio system with 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. This processing can be used to compensate for real-world limitations of speakers, amplifiers, and listening environments, providing dramatic improvements in perceived audio quality.

FEATURES
    28-/56-bit, 50 MIPS digital audio processor
    2 ADCs: SNR of 100 dB, THD + N of −83 dB
    4 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 of up to 192 kHz supported
    On-chip voltage regulator for compatibility with 3.3 V systems
    48-lead, plastic LQFP
    Qualified for automotive applications

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)