SI8920AC-APR

Overview

The SI8920AC-APR is an isolated analog amplifier from the Si8920 series, designed for current shunt measurement applications. It features a differential input and differential output configuration within a SOIC-16 package. The device operates on a supply voltage ranging from 3 V to 5.5 V with a typical operating current of 4.2 mA. Key electrical specifications include a 3 dB bandwidth of 950 kHz, an input offset voltage (Vos) of 200 µV, and a gain error of 0.5%. It provides 1200 Vrms isolation capability and functions reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Provides galvanic isolation for accurate signal transmission in high-voltage environments
• Supports differential input and differential output configurations for noise rejection
• Optimized for precision current shunt measurement applications

Applications

• Current shunt measurement in power conversion systems
• Industrial process control instrumentation
• Motor drive feedback circuits

Procurement Notes

Verify the specific suffix 'APR' against official Skyworks documentation to confirm tape-and-reel packaging status, as standard listings may vary. Ensure compatibility with the intended PCB footprint and reflow profile. Cross-reference the latest datasheet revision for any updates to mechanical dimensions or thermal characteristics before finalizing procurement.

Selection Notes

Select this component when differential output isolation is required for high-bandwidth current sensing. Compare Vos and gain error specifications against system accuracy requirements. Confirm that the 1200 Vrms isolation rating meets the safety standards of the target application environment. Evaluate the SOIC-16 package constraints against available board space.

Part Context

This part belongs to the Si8920 family of isolated amplifiers manufactured by Skyworks Solutions. The family utilizes CMOS technology to provide robust isolation barriers. The SI8920AC variant specifically denotes the 1200 Vrms isolation rating and 950 kHz bandwidth performance tier within the product line.

Replacement Considerations

Official substitutes within the same family include SI8920AC-IS and SI8920BD-IS. Verify pinout compatibility and isolation voltage ratings when considering these alternatives. Check for availability changes as some variants may have different lifecycle statuses.