ADAU1452WBCPZ150RL

Overview

The ADAU1452WBCPZ150RL is an automotive-qualified SigmaDSP digital audio processor featuring a 32-bit core operating at 147.456 MHz. It provides 40 kWords of data RAM and 8 kWords of program memory within a 72-lead LFCSP package. The device supports up to 48 channels of 32-bit digital I/O at sample rates up to 192 kHz, including four serial input/output ports and stereo S/PDIF interfaces. Key features include eight asynchronous sample rate converters (ASRCs) with 139 dB dynamic range, a built-in voltage regulator generating 1.2 V from a 3.3 V supply, and standalone self-boot capability via serial EEPROM.

Feature Summary

• Automotive-grade AEC-Q100 qualification with -40°C to +105°C operating temperature range
• 147.456 MHz 32-bit DSP core executing up to 6144 SIMD instructions per sample at 48 kHz
• Integrated 8-channel ASRC array supporting ratios from 1:8 to 7.75:1 with 139 dB DNR
• On-chip regulator for DVDD generation and self-boot functionality from external serial EEPROM

Applications

• Automotive head units and navigation systems
• Rear seat entertainment systems
• DSP amplifiers and sound system processors
• Commercial and professional audio processing hubs

Procurement Notes

Verify the specific suffix '150' confirms the 147.456 MHz clock frequency variant, distinct from the standard 294.912 MHz ADAU1452. Confirm RoHS compliance status and ensure the LFCSP-72 package dimensions match the PCB footprint requirements. Check for any specific automotive reliability certifications required by the end application.

Selection Notes

Select this model over the standard ADAU1452 when a lower core clock speed of 147.456 MHz is sufficient for the algorithm complexity. Ensure the design utilizes the internal 1.2 V regulator or accounts for the separate DVDD supply if bypassing it. Verify that the 40 kWords data memory meets the buffer requirements for the intended number of active ASRCs and audio channels.

Part Context

This component belongs to the ADAU145x family of SigmaDSP processors, which share a restructured hardware architecture optimized for efficient audio processing. It differs from the ADAU1452 primarily in its reduced core clock frequency while maintaining identical memory sizes and peripheral counts. The device is designed to replace larger, general-purpose DSPs with lower power consumption.

Replacement Considerations

Direct functional replacements within the same family include the ADAU1452WBCPZ (294.912 MHz) and ADAU1452KCPZ (automotive grade, 0°C to +70°C). Substitution requires verification of clock generator settings and thermal management capabilities relative to the new core frequency.