Dsp Integrated Circuit IC Chip ADAU1701JSTZ-RL Audio Processor Ic Two ADCs

Description

The ADAU1701 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, 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. Its signal processing is comparable to
that found in high end studio equipment. Most processing is done in full 56-
bit, double precision mode, resulting in very good low level signal
performance. The ADAU1701 is a fully programmable DSP.

The easy to use SigmaStudio™ software allows the user to graphically configure
a custom signal processing flow using blocks such as biquad filters, dynamics
processors, level controls, and GPIO interface controls. ADAU1701 programs can
be loaded on power-up either from a serial EEPROM through its own self-boot
mechanism or from an external microcontroller.

On power-down, the current state of the parameters can be written back to the
EEPROM from the ADAU1701 to be recalled the next time the program is run. Two
Σ-Δ ADCs and four Σ-Δ DACs provide a 98.5 dB analog input to analog output
dynamic. Each ADC has a THD + N of −83 dB, and each DAC has a THD + N of −90
dB. Digital input and output ports allow a glueless connection to additional
ADCs and DACs. The ADAU1701 communicates through an I 2 C® bus or a 4-wire SPI
port