ADAU1450WBCPZ

Digital Signal Processor Dsp Overview

The ADAU1450WBCPZ is an automotive-qualified SigmaDSP digital audio processor featuring a 32-bit core operating at up to 147.456 MHz. It provides 8 kWords of data memory and 8 kWords of program memory, supporting up to 48 channels of 32-bit digital I/O at sample rates up to 192 kHz. The device includes four serial input/output ports with flexible TDM, I2S, and PCM configurations, alongside four PDM microphone inputs. Unlike the ADAU1452, it lacks S/PDIF interfaces and asynchronous sample rate converters (ASRCs). Power supplies include AVDD (2.97 V to 3.63 V), DVDD (1.14 V to 1.26 V), PVDD (2.97 V to 3.63 V), and IOVDD (1.71 V to 3.63 V).

Digital Signal Processor Dsp Feature Summary

• A 32-bit SigmaDSP core running at 147.456 MHz with 8 kWords of data and program memory.
• Supports 48-channel digital audio I/O via four serial ports with TDM, I2S, left/right justified, and PCM formats.
• Includes four PDM microphone input channels with integrated decimation filters.
• Features standalone operation with self-boot from serial EEPROM and integrated I2C/SPI master/slave control interfaces.

Digital Signal Processor Dsp Applications

• Automotive audio processing systems
• Head units and navigation systems
• Rear seat entertainment systems
• DSP amplifiers for sound systems

Digital Signal Processor Dsp Procurement Notes

Verify that the specific application does not require S/PDIF interfaces or ASRC functionality, as these are absent in the ADAU1450 compared to other variants in the family. Confirm that the 147.456 MHz core frequency meets the processing requirements for the intended audio algorithms. Ensure the design accommodates the 72-lead LFCSP package dimensions and thermal dissipation characteristics.

Digital Signal Processor Dsp Selection Notes

Select the ADAU1450WBCPZ when S/PDIF and ASRC features are unnecessary, allowing for cost optimization. This model is suitable for designs requiring lower instruction throughput than the 294.912 MHz variants. Verify compatibility with the required number of PDM microphones and serial port configurations. Check that the 8 kWords of data memory suffices for the specific signal processing flow complexity.

Digital Signal Processor Dsp Part Context

The ADAU1450 is part of the SigmaDSP family, differentiated from the ADAU1452 by the absence of S/PDIF transceivers/receivers and ASRC blocks. It shares the same 72-lead LFCSP package and general architecture but operates at a reduced core frequency of 147.456 MHz. It retains the same program memory size but offers less data memory than higher-end models.

Digital Signal Processor Dsp Replacement Considerations

Direct replacement requires verifying that the host system does not utilize S/PDIF or ASRC resources previously handled by an ADAU1452. If those features are unused, the ADAU1450 may substitute for the ADAU1452 provided the 147.456 MHz clock speed is sufficient for the algorithm load.