SI88422EC-AS

Overview

The SI88422EC-AS is a Skyworks Solutions digital isolator featuring two unidirectional channels and an integrated DC-DC converter. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 100 Mb/s. The device provides 5000 Vrms isolation voltage using capacitive coupling technology. Key electrical parameters include a propagation delay of 18 ns, rise/fall times of 2.5 ns, and a power dissipation of 2.27 W. It functions reliably between -40°C and +125°C in a 16-SOIC package.

Feature Summary

• Integrates a fully-featured secondary sensing feedback-controlled DC-DC converter for isolated power generation
• Provides high-speed signal transmission with low propagation delay and pulse width distortion
• Utilizes capacitive coupling technology to achieve robust galvanic isolation

Applications

• Industrial automation systems requiring isolated power and signal transmission
• Medical equipment needing reliable galvanic separation
• Automotive electronics compliant with AEC-Q100 standards

Procurement Notes

Verify the specific suffix 'AS' against official Skyworks documentation to confirm the tape-and-reel packaging configuration. Ensure the selected variant matches the required insulation voltage rating of 5000 Vrms for your safety isolation design. Cross-reference the datasheet revision date to validate current specifications before finalizing procurement orders.

Selection Notes

Select this component when a combined solution for signal isolation and isolated power delivery is required. The integrated DC-DC converter eliminates the need for external magnetic components. Verify that the 100 Mb/s data rate meets system timing requirements and that the 16-SOIC footprint fits the PCB layout constraints.

Part Context

This part belongs to the Si8842x family of digital isolators from Skyworks Solutions. These devices are designed to replace traditional optocouplers in applications demanding higher reliability and lower power consumption. The series includes variants with different isolation voltages and channel configurations.

Replacement Considerations

SI88422EC-IS offers similar functionality with a 3.5 kV isolation rating.