SI88222BC-IS

Digital Isolators Overview

The SI88222BC-IS is a dual-channel digital isolator manufactured by Skyworks Solutions Inc., featuring an integrated DC-DC converter. It provides 3750 Vrms isolation voltage and supports data rates up to 100 Mbps with a propagation delay of 18 ns. The device operates within a supply voltage range of 3 V to 5.5 V and functions across a temperature range of -40°C to 125°C. Packaged in a 16-SOIC wide body, it utilizes capacitive coupling technology for signal transmission.

Digital Isolators Feature Summary

• Integrates a high-efficiency DC-DC converter to provide isolated power to the secondary side, eliminating the need for external isolated power supplies.
• Employs CMOS-based capacitive coupling technology to deliver high-speed signal isolation with superior reliability compared to optical couplers.
• Features bidirectional channel configuration allowing flexible signal routing between primary and secondary domains.

Digital Isolators Applications

• Industrial automation systems requiring robust galvanic isolation
• Programmable logic controller (PLC) input/output modules
• Inverter and motor drive control circuits
• Medical equipment with strict safety isolation requirements

Digital Isolators Procurement Notes

Verify that the specific suffix 'IS' corresponds to the tape-and-reel packaging format rather than tube packaging when sourcing components. Confirm that the integrated DC-DC converter output specifications align with the target application's power budget. Ensure compatibility with the required isolation voltage standards for the intended industrial or medical environment before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when a compact solution combining signal isolation and isolated power generation is required. The integrated DC-DC converter simplifies board layout by removing external transformer requirements. Consider the 100 Mbps data rate limit and 18 ns propagation delay for timing-critical applications. The 16-pin SOIC package offers a balance between pin count and thermal performance for dense PCB designs.

Digital Isolators Part Context

This part belongs to the SI88xx ISOvolt family, which integrates digital isolation with on-chip power conversion. It serves as a modern replacement for traditional optocoupler solutions, offering higher speed, lower power consumption, and greater longevity. The series is designed for applications demanding high reliability and reduced system complexity in harsh electrical environments.

Digital Isolators Replacement Considerations

SI88222EC-ISR is listed as a similar alternative within the same product family.