ADAU1442YSVZ-3A-RL

Overview

The ADAU1442YSVZ-3A-RL is a fully programmable SigmaDSP digital audio processor featuring a 172 MHz core capable of executing 3584 instructions per sample at 48 kHz. It integrates a flexible audio routing matrix (FARM) with up to 16 channels of asynchronous sample rate converters (ASRCs), supporting ratios from 1:8 to 7.75:1 with 139 dB dynamic range. The device provides 24-channel digital I/O, stereo S/PDIF interfaces, and supports serial/TDM I/O up to 192 kHz. It includes an on-chip regulator generating 1.8 V from a 3.3 V supply, operates within −40°C to +105°C, and utilizes a 100-lead TQFP package.

Feature Summary

• SigmaDSP core operating at 172 MHz with 4k parameter RAM and 8k data RAM
• Flexible Audio Routing Matrix (FARM) with up to 16 stereo ASRC channels
• 24-channel digital input/output with support for serial, TDM, and S/PDIF interfaces
• On-chip voltage regulator generating 1.8 V DVDD from 3.3 V AVDD

Applications

• Automotive audio processing head units
• Rear-seat entertainment systems
• DSP amplifiers and sound system amplifiers
• Commercial audio processing equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with SigmaStudio development tools for programming. Confirm power supply requirements for AVDD, DVDD, PVDD, and IOVDD pins during system design.

Selection Notes

Select this model for applications requiring high channel counts and multiple asynchronous clock domains. The ADAU1442 variant supports nine clock domains and 16 ASRC channels, distinguishing it from the ADAU1445 and ADAU1446 models which have reduced ASRC capabilities. Verify that the 100-lead TQFP package fits the PCB layout constraints.

Part Context

This component belongs to the ADAU144x family of SigmaDSP processors. It differs from the ADAU1445 and ADAU1446 primarily in its ASRC channel count and supported clock domains. While all share the same core architecture, the ADAU1442 offers the highest flexibility for complex multi-zone audio routing scenarios.

Replacement Considerations

Direct substitutes within the family include the ADAU1445YSVZ-3A and ADAU1446YSTZ-3A, though these offer fewer ASRC channels and clock domain capabilities. Cross-model replacement requires verification of software configuration and pinout compatibility.