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Product description

The ADAU1701JSTZ is a complete single-chip audio system that includes a 28/56-bit audio DSP, ADC, DAC, and microcontrollerlike control interface. Signal processing, including balancing, mixing, bass enhancement, multi-band dynamic processing, delay compensation, and stereo image expansion, compensates for the limitations of real-world speakers, amplifiers, and listening environments to dynamically improve perceived audio quality.

The ADAU1701's signal processing is comparable to that found in high-end stereo equipment. Most of the processing is done by the full 56-bit double precision mode, resulting in very good low-level signal performance. The ADAU1701 is a fully programmable digital signal processor. The easy-to-use SigmaStudio software allows users to graphically configure customized signal processing flows using biorder filters, dynamic processors, level controls, and GPIO interface controls.

The ADAU1701 program can be loaded from a serial EEPROM (via its self-booting mechanism) or powered on from an external microcontroller. During power-on, the current parameter state can be written from the ADAU1701 back to the EEPROM so that it can be invoked again the next time the program is run.

Features

28-/56-bit, 50 MIPS digital audio processor

2 ADCs: signal-to-noise ratio (SNR) 100 dB, total harmonic distortion + noise (THD + N) -83 dB

4 Dacs: signal-to-noise ratio (SNR) 104 dB, total harmonic distortion + noise (HD + N) -90 dB

Completely independent operation

Boot automatically from serial EEPROM

The auxiliary ADC consists of four input multiplexers for analog control

Universal interface GPIO for digital control and output

Fully programmable SigmaStudio™ graphics tools

28 bit × 28 bit multiplier, including 56 bit accumulator for full double precision processing

Clock oscillators use crystals to generate a master clock

Generate a master clock phase-locked loop (PLL) with a range of 64 × fS, 256 × fS, 384 × fS, or 512 × fS

I2S compatible, left-justified and right-justified flexible serial data I/O ports as well as TDM mode

A maximum sampling rate of 192 kHz is supported

A 3.3V power supply is available with a built-in voltage regulator

48-pin plastic LQFP package

Applications

Multimedia speaker system

MP3 player speaker

Car audio head unit

Mini stereo

Digital television

The studio monitor

Speaker mix adjustment

Concert performance effects processor

Seat Sound System (Airplane/Bus)