SI88220EC-AS

Digital Isolators Overview

The SI88220EC-AS is a two-channel digital isolator from Skyworks Solutions, designed for high-reliability industrial applications. It features unidirectional signal transmission with a data rate of 100 Mb/s and an insulation voltage of 3750 Vrms. The device operates on a supply voltage between 3 V and 5.5 V, drawing a typical operating current of 7.2 mA. Key electrical parameters include a propagation delay of 23 ns, rise/fall times of 2.5 ns, and pulse width distortion of 4.5 ns. It functions within a temperature range of -40°C to +125°C and is housed in a 16-pin SOIC package.

Digital Isolators Feature Summary

• Integrates capacitive coupling technology for robust signal isolation without optical components
• Provides bidirectional power delivery via an integrated DC-DC converter for isolated side power
• Ensures high common-mode transient immunity for reliable operation in noisy environments

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation
• Inverter and motor drive control circuits
• Programmable logic controller (PLC) input/output modules

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm pinout and packaging details, as variations exist within the Si88220 family. Confirm availability status directly with authorized distributors, as lead times may vary. Ensure the selected variant meets the required insulation voltage and thermal specifications for the target application environment before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when a compact, low-power solution is needed for isolating digital signals in industrial settings. The integrated DC-DC converter simplifies design by providing power to the isolated side, reducing external component count. Compare propagation delay and CMTI specifications against system timing requirements. Ensure the SOIC-16 package fits the PCB layout constraints and that the 3750 Vrms isolation rating satisfies safety standards for the specific application voltage levels.

Digital Isolators Part Context

This part belongs to the Si88xx ISOvolt series, which utilizes CMOS-based capacitive coupling technology. This series replaces traditional optocouplers by offering lower power consumption, smaller form factors, and higher reliability. The Si88220 specifically integrates a 2W DC-DC converter, distinguishing it from non-isolated power variants within the broader Skyworks digital isolator portfolio.

Digital Isolators Replacement Considerations

Check for direct substitutes such as the SI88220ED-IS or SI88220BC-IS, noting differences in insulation voltage ratings and package types. Verify compatibility with existing PCB footprints and ensure equivalent performance metrics for propagation delay and common-mode transient immunity.