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STAC9756TG-AA4 is listed in the Codecs range at ChipApex. The manufacturer field lists Sigmatel. Its product description is STAC9756 - STEREO AC 97 CODEC. Review the specifications below when checking this part for your BOM.
The STAC9756TG-AA4 is a stereo audio codec manufactured by Sigmatel, designed for AC'97 interface compliance. It integrates two analog-to-digital converters and supports full-duplex operation. The device operates within a voltage range of 3.135V to 5.25V and utilizes a TQFP surface-mount package. This component serves as a general-purpose solution for integrating high-fidelity audio processing into computer systems requiring standard AC'97 connectivity.
Verify the specific ordering suffix AA4 against official Sigmatel documentation to confirm pinout and electrical characteristics. Ensure compatibility with the target system's AC'97 controller requirements before procurement. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status.
Select this component when an AC'97 interface is required for legacy or specific industrial audio applications. Consider the TQFP package constraints for PCB layout and thermal management. Evaluate the voltage operating range against the system's power supply rails to ensure stable operation without additional level shifting.
This part belongs to the Sigmatel STAC97xx series of audio codecs, which were widely adopted in the late 1990s and early 2000s for PC audio solutions. The series typically includes variants like the STAC9750 and STAC9721, sharing common interface standards but differing in specific feature sets and packaging options.
Direct substitutes may include other members of the STAC97xx family such as the STAC9750T, provided they maintain AC'97 compatibility and similar pin configurations. Verify functional equivalence regarding clocking and voltage requirements before substitution.
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