AD1981BJST

Overview

The AD1981BJST is a stereo audio codec manufactured by Analog Devices Inc., designed for AC '97 compliant systems. It integrates high-performance analog-to-digital and digital-to-analog converters within a single package. The device supports simultaneous recording and playback with 20-bit resolution for both ADC and DAC paths. It features integrated headphone amplifiers and microphone preamplifiers, reducing external component requirements. The codec operates with a standard AC '97 interface, facilitating easy integration into PC audio architectures while maintaining low power consumption suitable for desktop and mobile platforms.

Feature Summary

• Integrates stereo ADC and DAC with 20-bit resolution for high-fidelity audio processing
• Includes built-in headphone drivers and microphone preamplifiers to minimize external circuitry
• Supports AC '97 interface specification for standardized system connectivity

Applications

• Desktop personal computer audio subsystems
• Notebook and laptop multimedia audio modules
• All-in-one PC audio controllers

Procurement Notes

Verify the specific suffix BJST against the official Analog Devices datasheet to confirm pinout compatibility and temperature range specifications. Ensure the source document explicitly identifies this part as an AC '97 codec. Cross-reference the manufacturer's current product status to confirm availability and lifecycle stage before procurement planning.

Selection Notes

Select this component when designing systems requiring strict adherence to the AC '97 audio interface standard. It is appropriate for applications needing integrated stereo conversion and output driving capabilities without additional discrete amplifiers. Evaluate system power budgets against the device's specified operating conditions to ensure thermal compliance within the target enclosure.

Part Context

This component belongs to the Analog Devices AC '97 codec family, which provides complete audio solutions for computing platforms. These devices typically combine multiple audio functions into a single chip to reduce board space and cost. The AD1981 series specifically targets mainstream consumer electronics where balanced performance and interface compatibility are prioritized over professional-grade isolated audio paths.

Replacement Considerations

Consult the Analog Devices official documentation for direct pin-compatible replacements within the same AC '97 codec portfolio. Verify that any substitute maintains identical interface timing and voltage levels. No alternative part numbers are confirmed in the provided reference material.