ADUM2251ARIZ

Overview

The ADUM2251ARIZ is a dual-channel digital isolator utilizing iCoupler magnetic coupling technology. It provides bidirectional or unidirectional signal isolation with a data rate of 1 Mbps and an insulation voltage rating of 5000 Vrms. The device features a common-mode transient immunity (CMTI) of 25 kV/µs and operates within a temperature range of -40°C to +125°C. Packaged in a 16-lead SOIC, it supports hot-swappable I2C applications.

Feature Summary

• Hot-swappable capability for safe connection during system power cycles
• Dual-channel isolation using proprietary iCoupler magnetic technology
• High common-mode transient immunity for noise-resistant operation

Applications

• Isolated I2C bus interfaces
• Hot-swappable system connections
• Industrial control communication links

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and functional configuration. Confirm availability status as distribution channels may list limited stock or end-of-life conditions. Ensure the package type matches the required PCB footprint before ordering.

Selection Notes

Select this component for applications requiring isolated I2C communication with hot-swap support. Verify that the 1 Mbps data rate meets system timing requirements. Ensure the 5000 Vrms isolation rating satisfies safety standards for the intended voltage barrier.

Part Context

This part belongs to the ADuM225x family of dual-channel digital isolators from Analog Devices. These devices are designed to replace traditional optocouplers, offering superior performance in speed, power consumption, and reliability while maintaining high isolation voltages for industrial and automotive environments.

Replacement Considerations

Check Analog Devices datasheets for direct replacements such as the ADUM2250 or ADUM2251 variants with different output configurations. Verify compatibility with existing circuit designs when substituting.