SI8941BD-AS4R

Power Management - Specialized Overview

The SI8941BD-AS4R is an automotive-grade isolated delta-sigma modulator designed for current shunt measurement applications. It features a specified linear input range of 250 mV and utilizes an external DSM clock configuration. The device operates within a supply voltage range of 3 V to 5.5 V and supports high-temperature environments up to +125°C. Packaged in a wide-body SOIC-8 format, it provides galvanic isolation for accurate signal transmission in demanding power electronics systems.

Power Management - Specialized Feature Summary

• Automotive-grade isolated delta-sigma modulation for precise current sensing
• Supports external DSM clock configuration for flexible system timing
• Wide-body SOIC-8 package optimized for thermal performance and PCB layout

Power Management - Specialized Applications

• AC/DC switching power supply control loops
• Automotive battery management systems
• High-side or low-side current monitoring in electric vehicles

Power Management - Specialized Procurement Notes

Verify the specific suffix AS4R indicates reel packaging when sourcing components. Confirm that the external clock requirement aligns with your controller design, as this variant differs from internal clock versions. Ensure the wide-body SOIC-8 footprint matches your PCB layout constraints before finalizing procurement orders.

Power Management - Specialized Selection Notes

Select this component when an external clock source is preferred for synchronization with other system elements. It is suitable for designs requiring a 250 mV linear input range for shunt-based current measurement. Consider the automotive qualification if the application demands high reliability under varying temperature conditions.

Power Management - Specialized Part Context

This part belongs to the Si8941 family of isolated delta-sigma controllers from Skyworks Solutions. It complements other variants like the SI8941AD-IS4 by offering different clocking options and packaging styles. The family targets industrial and automotive power management applications requiring robust isolation and precision.

Power Management - Specialized Replacement Considerations

The SI8941BD-AS4 is the tube-packaged equivalent of this reel-part. Verify pinout compatibility if substituting with non-Skyworks isolated amplifiers, as interface specifications may differ significantly.