SI8920AC-IS

Overview

The SI8920AC-IS is a single-channel isolated analog amplifier from the Si8920 series, manufactured by Skyworks Solutions. It features CMOS isolation technology with a rated insulation voltage of 1200 Vrms and a 3dB bandwidth of 950 kHz. The device operates on a differential input and provides a differential output, supporting supply voltages between 3 V and 5.5 V. Key electrical specifications include an input offset voltage (Vos) of 200 µV, a gain error of 0.5%, and a typical operating supply current of 4.2 mA. It is housed in an SOIC-16 package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• CMOS-based digital isolation architecture for high reliability
• Differential input and output configuration for signal integrity
• Wide operating temperature range suitable for industrial environments

Applications

• Industrial process control systems
• Medical equipment requiring galvanic isolation
• Power electronics monitoring circuits

Procurement Notes

Verify the specific suffix against official Skyworks documentation to confirm pinout and isolation ratings. Check for obsolescence notices as some variants in this series may be discontinued. Ensure compatibility with standard SOIC-16 footprints during PCB layout. Confirm moisture sensitivity levels for reflow soldering profiles.

Selection Notes

Select this component when a differential output is required alongside high common-mode rejection. Compare the 1200 Vrms isolation rating against system safety requirements. Consider the 950 kHz bandwidth for high-speed signal transmission needs. Evaluate power consumption at 4.2 mA against thermal constraints in enclosed designs.

Part Context

This part belongs to the Si8920 family of isolated amplifiers designed for precision applications. It utilizes Skyworks' proprietary CMOS isolation technology to replace traditional transformer or optocoupler solutions. The family offers various input ranges and isolation voltages to suit different industrial standards.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.