SI88222ED-ISR

Digital Isolators Overview

The SI88222ED-ISR is a Skyworks Solutions digital isolator featuring two unidirectional channels and an integrated DC-DC converter. It utilizes capacitive coupling technology to provide 5000 Vrms isolation voltage with a common-mode transient immunity of 40 kV/µs. The device supports data rates up to 100 Mb/s, with typical propagation delays of 12.6 ns (low-to-high) and 17.5 ns (high-to-low). Operating on a supply voltage range of 3 V to 5.5 V, it draws 7.3 mA of operating current. The component is housed in a 16-SOIC package and is qualified under AEC-Q100 standards for automotive applications.

Digital Isolators Feature Summary

• Integrates a 2W DC-DC converter within the isolation barrier to eliminate external power requirements.
• Employs CMOS-based capacitive coupling technology for high reliability and reduced size compared to optical couplers.
• Provides bidirectional signal transmission capability through two dedicated reverse channels.

Digital Isolators Applications

• Industrial inverters and motor drives
• Programmable logic controllers (PLC)
• Servo motor control systems

Digital Isolators Procurement Notes

Verify the specific suffix 'ED' against the datasheet to confirm the SOIC-Wide package variant. Confirm AEC-Q100 qualification status if automotive compliance is required. Check manufacturer lifecycle status as some listings indicate this model may be not recommended for new designs.

Digital Isolators Selection Notes

Select this component when isolated power generation is required alongside signal isolation. The integrated DC-DC converter simplifies board layout by removing the need for separate isolated power supplies. Ensure the 100 Mb/s speed requirement aligns with system timing constraints.

Digital Isolators Part Context

This part belongs to the Si8822x ISOvolt series, designed for industrial isolation solutions. It serves as a modern replacement for traditional optocouplers, offering lower power consumption and higher channel density. The series targets applications requiring robust galvanic isolation in noisy environments.

Digital Isolators Replacement Considerations

SI88222EC-ISR is listed as a similar alternative part number.

Digital Isolators FAQ

Does the SI88222ED-ISR include an isolated power supply?

Yes, it features an integrated DC-DC converter that provides isolated power generation across the isolation barrier.

What is the maximum isolation voltage rating?

The device supports an insulation voltage of 5000 Vrms.