ADUM2251WARWZ-RL

Overview

The ADUM2251WARWZ-RL is a dual-channel digital isolator from Analog Devices, designed for hot-swappable I2C applications. It features magnetic coupling technology with a 5 kVrms insulation voltage and supports data rates up to 1 Mb/s. The device operates within a temperature range of -40°C to +105°C and is housed in a 16-lead SOIC_W package. It holds AEC-Q100 qualification for automotive reliability.

Feature Summary

• Supports hot-swap operations on I2C buses without causing system resets or data corruption
• Provides bidirectional signal isolation using proprietary magnetic coupling technology
• Ensures high safety compliance with reinforced insulation ratings suitable for industrial standards

Applications

• Hot-swappable I2C bus isolation in industrial automation systems
• Isolation between microcontrollers and peripheral devices in automotive electronics
• Protecting sensitive control circuits in medical equipment during module replacement

Procurement Notes

Verify the specific suffix 'W' indicates the wide-body SOIC-16 package variant. Confirm the '-RL' suffix denotes reel packaging. Check current availability status as supply may be restricted. Ensure compatibility with your board's thermal management requirements given the operating temperature range. Validate that the 5 kVrms rating meets your application's safety isolation standards.

Selection Notes

Select this component when bidirectional I2C isolation with hot-swap capability is required. Compare against standard isolators if hot-swap functionality is not needed. Consider the 16-lead package size for PCB layout constraints. Verify power supply voltage ranges match your system design. Evaluate the AEC-Q100 qualification if deploying in automotive environments.

Part Context

This part belongs to the ADUM225x series of digital isolators. It shares the same core isolation technology as other members but is optimized specifically for I2C protocols. The series utilizes capacitive and magnetic isolation techniques depending on the specific model variant.

FAQ

Does the ADUM2251 support simultaneous hot-swap on both channels?

Yes, the device is designed to handle hot-swap events on both isolated channels independently without disrupting the connected systems.

What is the maximum data rate supported by this isolator?

The ADUM2251WARWZ-RL supports data rates up to 1 Mb/s, which is sufficient for standard and fast-mode I2C communications.