SI8920AC-AP

Overview

The SI8920AC-AP is an isolated analog amplifier designed for current shunt measurement applications. It operates on a single supply voltage ranging from 3 V to 5.5 V and features a differential input with a maximum input offset voltage of 200 µV. The device provides a 3 dB bandwidth of 950 kHz and maintains a gain error of 0.5%. It utilizes CMOS isolation technology with a rated insulation voltage of 1200 Vrms. The component is housed in a SOIC-16 package and supports operation across a temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation for accurate current sensing in high-voltage environments
• Features low input offset voltage for enhanced measurement precision
• Supports wide bandwidth for dynamic signal monitoring
• Integrates CMOS-based isolation barrier for reliable signal transmission

Applications

• Current shunt measurement in power conversion systems
• Motor drive control circuits
• Industrial automation equipment
• Inverter and converter topologies

Procurement Notes

Verify the specific suffix AP against official Skyworks documentation to confirm pinout and packaging details, as variations exist within the Si8920 family. Ensure compatibility with your PCB footprint and thermal requirements. Cross-reference the datasheet revision date to validate electrical characteristics against your design specifications before finalizing procurement.

Selection Notes

Select this component when precise current sensing is required in isolated environments. The 1200 Vrms isolation rating suits most industrial and automotive applications. Consider the 950 kHz bandwidth for high-frequency switching applications. Verify that the SOIC-16 package fits your assembly constraints and that the 3 V to 5.5 V supply range aligns with your system power architecture.

Part Context

The SI8920AC-AP belongs to the Si8920 series of isolated amplifiers manufactured by Skyworks Solutions. This series is engineered specifically for current shunt measurement, offering a compact solution for replacing traditional transformer-based isolators. The AC variant typically denotes specific gain or input characteristics within the broader product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Skyworks Solutions technical support or authorized distributors for validated alternatives compatible with the Si8920 series.