ADAU1446YSTZ-3A-RL

Digital Signal Processor Dsp Overview

The ADAU1446YSTZ-3A-RL is a fully programmable SigmaDSP digital audio processor featuring a flexible audio routing matrix (FARM). It operates with a 172 MHz core clock and supports up to 3584 instructions per sample at 48 kHz. The device includes 4k parameter RAM and 8k data RAM, along with 24-channel digital I/O and stereo S/PDIF interfaces. It lacks asynchronous sample rate converters, supporting only one clock domain. Power supplies are 3.3 V for analog/I/O and 1.8 V for digital logic, with an on-chip regulator generating the 1.8 V supply. It is housed in a 100-lead LQFP package.

Digital Signal Processor Dsp Feature Summary

• SigmaDSP core operating at 172 MHz with 4k parameter RAM and 8k data RAM
• Flexible Audio Routing Matrix (FARM) with 24-channel digital I/O and stereo S/PDIF
• On-chip voltage regulator generating 1.8 V from a 3.3 V supply
• Supports standalone operation via self-boot from serial EEPROM

Digital Signal Processor Dsp Applications

• Automotive audio processing head units
• Rear-seat entertainment systems
• DSP amplifiers for sound systems

Digital Signal Processor Dsp Procurement Notes

Verify the ordering suffix '-RL' indicates reel packaging with a factory quantity of 1000 units. Confirm the 'YSTZ' designation corresponds to the LQFP-100 package variant. Ensure compatibility with the EVAL-ADAU1446EBZ development kit for initial configuration and testing.

Digital Signal Processor Dsp Selection Notes

Select this model over the ADAU1442 or ADAU1445 if the application requires a single clock domain and does not need asynchronous sample rate conversion. The LQFP package offers different thermal characteristics compared to the TQFP variants. Verify that the 172 MHz core speed meets the processing requirements for the intended audio algorithms.

Digital Signal Processor Dsp Part Context

This component belongs to the ADAU144x family of SigmaDSP processors. Unlike the ADAU1442 and ADAU1445, which feature 16 channels of ASRCs and TQFP packages, the ADAU1446 is designed for simpler multi-clock domain applications without sample rate conversion needs. It shares the same DSP core architecture and control interfaces as its siblings.

Digital Signal Processor Dsp Replacement Considerations

The ADAU1446YSTZ-3A (tray packaged) is functionally identical but differs in shipping format. No other direct pin-compatible substitutes exist within the datasheet; alternative models like the ADAU1442/1445 offer additional ASRC capabilities.