STAC9757TG-AA4

Codecs Overview

The STAC9757TG-AA4 is a high-performance audio codec designed for notebook and desktop PC applications. It integrates a stereo DAC with 102dB dynamic range and a stereo ADC with 98dB dynamic range, supporting 48kHz to 96kHz sampling rates. The device features integrated headphone and line-out drivers, eliminating the need for external amplifiers in many designs. It supports AC'97 2.3 specification compliance and includes digital microphone input capabilities. The component utilizes a 48-pin TQFP package, providing a compact solution for system-on-chip audio integration while maintaining low power consumption profiles suitable for mobile computing platforms.

Codecs Feature Summary

• Integrated stereo DAC and ADC with high dynamic range performance
• Built-in headphone and line-out drivers for simplified board design
• Supports AC'97 2.3 standard for broad platform compatibility
• Includes digital microphone interface and multi-channel audio processing

Codecs Applications

• Notebook computer mainboard audio subsystems
• Desktop PC motherboard integrated audio solutions
• All-in-one PC audio processing units
• Compact multimedia terminal devices

Codecs Procurement Notes

Verify the specific AA4 suffix against manufacturer documentation to confirm pinout and electrical characteristics match the target design requirements. Ensure supply chain sources provide original packaging with authenticity guarantees. Cross-reference the AC'97 controller compatibility on the host platform before finalizing procurement orders to prevent integration issues.

Codecs Selection Notes

Select this component when a complete AC'97 compliant audio solution is required without external analog front-end components. Evaluate the thermal performance within the TQFP-48 package relative to the enclosure airflow constraints. Confirm that the host chipset supports the necessary AC'97 bus signaling speeds and interrupt configurations for stable operation.

Codecs Part Context

This codec belongs to the Sigmatel (later C-Media) STAC97xx series, which established a baseline for integrated PC audio during the early 2000s. The STAC9757 variant specifically targeted the mid-range market segment, offering a balance between audio fidelity and cost-effectiveness. It served as a common reference design for OEMs transitioning from discrete audio circuits to integrated codecs.

Codecs Replacement Considerations

Direct replacements are limited due to the proprietary nature of older AC'97 implementations. Verify pin-to-pin compatibility with STAC9756 or STAC9758 variants if functional differences are acceptable. Modern USB-based audio interfaces may serve as architectural alternatives but require different driver stacks.