ADAU1701 Datasheet | Analog Devices

FEATURES 28/56-bit, 50 MHz digital audio processor Stereo ADC: 100 d B SNR and -80 d B THD+N 4-channel DAC: 104 d B SNR and -90 d B THD+N plete 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 Sigma Studio™ 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 × f S, 256 × f S, 384 × f S, or 512 × f S clocks Flexible serial data I/O ports with I2S patible, leftjustified, right-justified, and TDM modes Sampling rates up to 192 k Hz supported On-chip voltage regulator for patibility with 3.3 V systems 48-lead LQFP plastic package Sigma DSP® 28/56-Bit Audio Processor with 2ADC/4DAC ADAU1701 APPLICATIONS Multimedia speaker systems MP3 player speaker docks Automotive head units Mini-ponent stereos Digital televisions Studio monitors Speaker crossovers Musical instrument effects processors In-seat sound systems (aircraft/motor coaches) FUNCTIONAL BLOCK DIAGRAM 3.3 V DIGITAL DIGITAL VDD GROUND 3 3 ANALOG ANALOG PLL VDD GROUND MODE 3 3 3 PLL LOOP FILTER CRYSTAL 2 1.8 V REGULATOR CLOCK OSCILLATOR 2-CHANNEL ANALOG INPUT FILTA / ADC_RES STEREO ADC 28/56-BIT, 50 MHz AUDIO PROCESSOR CORE 40 ms DELAY MEMORY CONTROL INTERFACE AND SELFBOOT 8-CH DIGITAL INPUT 8-BIT AUX ADC GPIO FILTD / CM 4-CHANNEL ANALOG OUTPUT RESET/ MODE SELECT 8-CH DIGITAL OUTPUT INPUT/OUTPUT MATRIX RESET SELF BOOT I2C/SPI & WRITEBACK DIGITAL IN OR GPIO AUX ADC OR GPIO DIGITAL OUT OR GPIO Figure 1. GENERAL DESCRIPTION The ADAU1701 is a plete 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 pensation, speaker pensation, and stereo image...