SI88622EC-IS

Overview

The SI88622EC-IS is a Skyworks Solutions digital isolator featuring two unidirectional channels with an integrated DC-DC converter. It provides 3750 Vrms isolation voltage and operates at data rates up to 100 Mb/s. The device utilizes capacitive coupling technology within a 20-SOIC package. Key electrical parameters include a propagation delay of 18 ns, supply voltage range of 3 V to 5.5 V, and operating current of 7.5 mA. It supports a wide temperature range and offers high common-mode transient immunity for reliable signal transmission in isolated environments.

Feature Summary

• Integrates a 2W DC-DC converter for isolated power generation
• Provides robust capacitive coupling isolation
• Supports high-speed data transmission up to 100 Mb/s
• Features unidirectional channel configuration

Applications

• Industrial automation systems
• Motor drive control circuits
• Inverter applications
• General-purpose isolation interfaces

Procurement Notes

Verify the specific suffix 'IS' corresponds to the tube packaging format as indicated in distributor listings. Confirm that the 3750 Vrms isolation rating aligns with system safety requirements rather than higher-rated variants like the ED series. Ensure the integrated DC-DC converter meets the target application's power budget constraints before finalizing the component selection.

Selection Notes

Select this part when a compact solution combining isolation and power conversion is required. The SOIC-20 package offers space efficiency compared to wider packages. Consider the 3750 Vrms rating sufficient for standard industrial isolation needs. The unidirectional nature limits use cases to single-direction signal flow. Verify compatibility with the 3V to 5.5V supply range across all operational conditions.

Part Context

This component belongs to the Si88xx ISOvolt family from Skyworks Solutions. The series focuses on replacing optocouplers with CMOS-based digital isolation solutions. These devices aim to reduce size, cost, and power consumption while enhancing reliability. The integration of the DC-DC converter distinguishes it from basic isolators, providing a complete isolation barrier solution in a single package.

Replacement Considerations

The SI88622ED-ISR is listed as a similar alternative with 5000 Vrms isolation. However, the EC-IS variant specifically features 3750 Vrms isolation. Verify if the higher insulation voltage of the ED series is necessary or if the lower profile of the EC-IS suffices. Packaging differences between tube and reel formats may also influence substitution decisions.