STAC9756T-AA4

Codecs Overview

The STAC9756T-AA4 is a single-function PCM codec manufactured by Tempo Semiconductor, Inc. It operates in synchronous mode and is housed in a lead-free LQFP-48 package (JESD-30 code S-PQFP-G48). The device features a plastic/epoxy body with matte tin terminal finish and supports surface mount assembly. It is rated for commercial temperature ranges with a maximum operating temperature of 70 °C and a minimum of -40 °C. The nominal supply voltage is 3.3 V. The component includes integrated filtering capabilities and has a moisture sensitivity level of 3.

Codecs Feature Summary

• Integrated PCM codec functionality for audio signal processing
• Synchronous operation mode for timing alignment
• Built-in filtering support within the codec architecture

Codecs Applications

• Telecommunications equipment requiring PCM codec integration
• Audio processing systems utilizing 3.3V power supplies
• Commercial-grade electronic devices operating within standard temperature limits

Codecs Procurement Notes

Verify the manufacturer designation as Tempo Semiconductor, Inc., noting that STAC9756 is historically associated with Sigmatel before acquisition. Confirm the specific AA4 suffix corresponds to the lead-free LQFP-48 variant with matte tin plating. Ensure the procurement documentation explicitly states the 3.3V nominal supply requirement and commercial temperature range specifications to match the verified datasheet parameters.

Codecs Selection Notes

Select this component when a synchronous PCM codec with integrated filtering is required for telecommunications or audio applications. The LQFP-48 package is suitable for surface mount designs needing a compact footprint. Verify compatibility with 3.3V logic levels and ensure the design environment supports the specified 70 °C maximum operating temperature limit for commercial grade reliability.

Codecs Part Context

This component belongs to the family of PCM codecs designed for telecommunication circuits. It serves as a digital-to-analog and analog-to-digital conversion interface for voice signals. The device is characterized by its synchronous operation and low-profile flatpack packaging, distinguishing it from parallel or asynchronous codec alternatives in similar form factors.

Codecs Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with other Tempo Semiconductor PCM codecs or equivalent industry-standard parts only after verifying pinout and electrical parameter compatibility.