ADUM2251ARWZ-RL

Overview

The ADUM2251ARWZ-RL is a dual-channel digital isolator from Analog Devices, designed for hot-swappable I2C applications. It features magnetic coupling technology with a 5000 Vrms insulation voltage and bidirectional data transmission at up to 1 Mb/s. Operating on a 3 V to 5.5 V supply, it supports open-drain interfaces with a 30 mA current sink capability. The device is housed in a 16-lead SOIC wide body package (SOIC-16) and operates within a temperature range of -40°C to +105°C.

Feature Summary

• Supports hot-swap operations without requiring signal splitting for I2C compatibility
• Provides high-voltage isolation via magnetic coupling technology
• Features bidirectional communication channels compatible with standard I2C interfaces

Applications

• Isolated I2C, SMBus, or PMBus interfaces
• Multilevel I2C interfaces
• Power supplies and networking equipment
• Power over Ethernet systems

Procurement Notes

Verify component authenticity through authorized distributors due to limited availability status. Confirm the specific suffix matches the required reel packaging configuration. Ensure compliance with RoHS directives and check for moisture sensitivity handling requirements during storage and assembly processes.

Selection Notes

Select this component when bidirectional I2C isolation is required in hot-swappable environments. It eliminates the need for separate transmit and receive isolators. Consider the 5000 Vrms isolation rating for safety-critical designs. Verify that the 16-lead SOIC package fits the PCB layout constraints.

Part Context

This part belongs to the ADuM2250/ADuM2251 series of hot-swappable digital isolators. It is specifically engineered to simplify I2C interface isolation by supporting bidirectional data flow within a single package. The series is widely used in industrial and automotive applications requiring robust galvanic isolation.

Replacement Considerations

The ADUM2250ARWZ-RL is a related variant within the same family, offering similar specifications but potentially differing in specific regulatory approvals or pinout configurations. Verify functional equivalence before substitution.