SI88422BD-ISR

Overview

The SI88422BD-ISR 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, supporting data rates up to 100 Mb/s with a propagation delay of 18 ns. The device provides 5000 Vrms isolation via capacitive coupling and functions across a temperature range of -40°C to +125°C. Packaged in a 16-pin SOIC-Wide (SOIC-16) surface-mount format, it draws 7.5 mA during operation.

Feature Summary

• Integrates a high-voltage DC-DC converter for isolated power generation
• Utilizes silicon dioxide-based capacitive coupling technology
• Provides bidirectional signal transmission capability through dual channels

Applications

• Industrial automation control systems
• Medical equipment signal isolation
• Power electronics monitoring interfaces

Procurement Notes

Verify the specific suffix 'BD-ISR' against official Skyworks documentation to confirm the exact package type and reel quantity specifications. Ensure that the integrated DC-DC converter requirements align with the target application's power budget before procurement. Cross-reference the datasheet revision history to confirm current manufacturing status and any potential design-in restrictions.

Selection Notes

Select this component when both galvanic isolation and on-board isolated power are required within a compact footprint. The integrated DC-DC converter eliminates the need for external isolated power supplies, simplifying board layout. Consider the 100 Mb/s data rate limit and 18 ns propagation delay for timing-sensitive applications requiring high-speed digital communication across isolation barriers.

Part Context

This part belongs to the Si88422 series of general-purpose digital isolators from Skyworks Solutions. The series is designed for robust performance in noisy environments, offering high common-mode transient immunity. The specific model integrates power conversion capabilities, distinguishing it from standard isolator variants that require external isolated power sources.

Replacement Considerations

SI88422ED-ISR