ADAU1452WBCPZ150

Overview

The ADAU1452WBCPZ150 is an automotive-qualified SigmaDSP digital audio processor featuring a 32-bit core operating at a maximum frequency of 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, and standalone self-boot capability from serial EEPROM.

Feature Summary

• A 32-bit SigmaDSP core running at 147.456 MHz with 40 kWords data and 8 kWords program memory.
• Support for 48-channel digital audio I/O via four flexible serial ports and stereo S/PDIF transceivers.
• Eight asynchronous sample rate converters (ASRCs) supporting ratios from 1:8 to 7.75:1 with 139 dB dynamic range.
• Includes an on-chip 1.2 V regulator, six-channel auxiliary ADC, and self-boot functionality for standalone operation.

Applications

• Automotive head units and navigation systems.
• Rear seat entertainment systems.
• DSP amplifiers for vehicle sound systems.

Procurement Notes

Verify the specific ordering suffix to confirm the 147.456 MHz core frequency variant. Ensure compatibility with the required temperature range and packaging format. Confirm that the design utilizes the integrated 1.2 V regulator or external supplies as needed for AVDD, DVDD, PVDD, and IOVDD pins.

Selection Notes

Select this model over the standard ADAU1452 when a reduced core clock speed of 147.456 MHz is sufficient for the application, potentially lowering power consumption. Verify that the 40 kWords data memory meets algorithm requirements. Note that this device includes S/PDIF interfaces, unlike the ADAU1450, and ASRCs, unlike the ADAU1450.

Part Context

This component belongs to the ADAU145x family of automotive-grade audio processors. It shares the same package and peripheral interfaces as the higher-frequency ADAU1452 but operates at half the core clock speed. It is distinct from the ADAU1451, which has less data memory, and the ADAU1450, which lacks S/PDIF and ASRC capabilities.

Replacement Considerations

The ADAU1452WBCPZ serves as a higher-performance alternative with a 294.912 MHz core. The ADAU1451WBCPZ offers similar features but with only 16 kWords of data memory. Ensure any replacement maintains the required S/PDIF and ASRC functionality if present in the original design.