SI8947BB-AS

Power Management - Specialized Overview

The SI8947BB-AS is an automotive-grade isolated delta-sigma modulator (DSM) designed for current shunt measurement applications. It features a specified linear input range of 250 mV and integrates an internal 20 MHz DSM clock. The device provides 2.5 kV isolation voltage and is housed in a narrow body SO-8 package.

Power Management - Specialized Feature Summary

• Automotive qualified isolated delta-sigma modulation architecture
• Integrated high-frequency internal clock source
• Designed for direct current shunt sensing interfaces

Power Management - Specialized Applications

• Automotive current shunt measurement systems
• Isolated signal conditioning for power electronics
• High-voltage side current monitoring in electric vehicles

Power Management - Specialized Procurement Notes

Verify component authenticity through authorized Skyworks distributors or certified partners. Confirm RoHS compliance status and check for recent Product Change Notifications (PCN) regarding manufacturing updates. Ensure supply chain stability due to potential restricted availability in certain regions.

Power Management - Specialized Selection Notes

Select this part when a 250 mV input range is required for isolated current sensing. Compare with the SI8947AD-AS4 if a wider SSOP-8 package or different input range is needed. Ensure the design supports the internal 20 MHz clock requirement without external oscillators.

Power Management - Specialized Part Context

Part of the Si8947 family of isolated DSMs from Skyworks Solutions. This series targets automotive applications requiring galvanic isolation between high-voltage power stages and low-voltage control circuitry, enabling precise digital conversion of analog current signals.

Power Management - Specialized Replacement Considerations

SI8947AD-AS4 is a documented alternative within the same family, offering wide body SSOP-8 packaging.