GENERAL DESCRIPTION

The ADAU1452/ADAU1451/ADAU1450 are automotive qualified audio processors that far exceed the digital signal processing capabilities of earlier SigmaDSP® devices. The restructured hardware architecture is optimized for efficient audio processing.

FEATURES

Qualified for automotive applications

Fully programmable audio DSP for enhanced sound processing

Features SigmaStudio, a proprietary graphical programming tool for the development of custom signal flows

Up to 294.912 MHz, 32-bit SigmaDSP core at 1.2 V

Up to 6144 SIMD instructions per sample at 48 kHz

Up to 40 kWords of parameter/data RAM

Up to 800 ms digital audio delay pool at 48 kHz

Audio I/O and routing

4 serial input ports, 4 serial output ports

48-channel, 32-bit digital I/O up to a sample rate of 192 kHz

Flexible configuration for TDM, I2S, left and right justified formats, and PCM

Up to 8 stereo ASRCs from 1:8 up to 7.75:1 ratio and 139 dB DNR

Stereo S/PDIF input and output (not on the ADAU1450)

Four PDM microphone input channels

Multichannel, byte addressable TDM serial ports

Clock oscillator for generating master clock from crystal

Integer PLL and flexible clock generators

Integrated die temperature sensor

I2C and SPI control interfaces (both slave and master)

Standalone operation

Self boot from serial EEPROM

6-channel, 10-bit SAR auxiliary control ADC

14 multipurpose pins for digital controls and outputs

On-chip regulator for generating 1.2 V from 3.3 V supply

72-lead, 10 mm × 10 mm LFCSP package with 5.3 mm exposed pad

Temperature range: −40°C to +105°C

APPLICATIONS

Automotive audio processing

Head units

Navigation systems

Rear seat entertainment systems

DSP amplifiers (sound system amplifiers)

Commercial and professional audio processing