ADAU1462WBCPZ150RL

Overview

The ADAU1462WBCPZ150RL is an automotive-qualified SigmaDSP digital audio processor featuring a 32-bit core operating at 147.456 MHz. It provides 48 kWords of data memory and 16 kWords of program memory within a 72-lead, 10 mm × 10 mm 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, stereo S/PDIF interfaces, and four PDM microphone inputs. Integrated asynchronous sample rate converters (ASRCs) offer 139 dB dynamic range with ratios from 1:8 to 7.75:1. Power supplies include AVDD (3.3 V), DVDD (1.2 V), PVDD (3.3 V), and IOVDD (1.8 V–3.3 V).

Feature Summary

• Automotive-qualified 32-bit SigmaDSP core running at 147.456 MHz.
• 48-channel digital audio interface supporting TDM, I²S, left/right justified, and PCM formats.
• Eight stereo ASRCs providing 139 dB dynamic range for multirate system integration.
• Integrated clock oscillator, PLL, and on-chip regulator generating 1.2 V from 3.3 V supply.

Applications

• Automotive head units
• Rear seat entertainment systems
• Trunk amplifiers

Procurement Notes

Verify the specific suffix '150' indicates the 147.456 MHz core frequency variant, distinct from the 294.912 MHz ADAU1462WBCPZ300. Confirm package type is 72-LFCSP-VQ (10x10) with exposed pad. Ensure compatibility with SigmaStudio configuration tools for standalone operation via serial EEPROM boot.

Selection Notes

Select this model over the ADAU1462WBCPZ300 when a lower core frequency of 147.456 MHz meets processing requirements, potentially reducing power consumption. Verify that 16 kWords of program memory is sufficient for the target audio algorithms. Ensure the design accommodates the required AVDD, DVDD, PVDD, and IOVDD voltage domains.

Part Context

This component belongs to the ADAU1462/ADAU1466 family of automotive audio processors. It shares pin and register compatibility with the ADAU1450/1451/1452 series but offers enhanced processing capabilities. The primary distinction within the ADAU1462 variants is the DSP core speed and memory size, with the 150 suffix denoting the mid-frequency option.

Replacement Considerations

Pin-compatible replacements within the same family include the ADAU1462WBCPZ300 (higher frequency/memory) and the ADAU1466WBCPZ300 (higher memory/frequency). Direct substitution requires verifying that the application code fits within the 16 kWords program memory limit of the 150 variant.