ADUM2251ARIZ-RL

Overview

The ADUM2251ARIZ-RL is a hot-swappable, dual-channel digital isolator designed for I²C interfaces. It features magnetic coupling technology with an isolation voltage of 5000 Vrms and a common mode transient immunity of 25 kV/µs. The device supports bidirectional communication at data rates up to 1 Mbps. It operates within a supply voltage range of 3 V to 5.5 V and is housed in a 16-SOIC package.

Feature Summary

• Hot-swappable capability allows connection while the bus is active without disrupting communication.
• Nonlatching bidirectional channels ensure reliable data transfer for I²C interfaces.
• Magnetic coupling provides robust isolation with high common mode transient immunity.

Applications

• I²C bus isolation in industrial automation systems
• Isolating microcontrollers from sensor networks
• Protecting control circuits in medical equipment

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required packaging and temperature grade. Request official datasheets and certification documents to validate specifications before integration into design projects.

Selection Notes

Select this component when hot-swappable I²C isolation is required. Ensure the system voltage aligns with the 3 V to 5.5 V operating range. Verify that the 1 Mbps data rate meets application timing requirements. Consider the 16-SOIC package dimensions for PCB layout compatibility.

Part Context

This part belongs to the ADuM225x series of digital isolators from Analog Devices. It utilizes iCoupler technology for signal transmission across the isolation barrier. The series is designed for applications requiring high reliability and noise immunity in electrically noisy environments.

Replacement Considerations

Check for direct substitutes within the ADuM225x family, such as the ADUM2250ARIZ-RL, which offers similar isolation but may differ in channel configuration or specific interface optimizations. Verify pinout and electrical parameters match before substitution.

FAQ

What is the maximum data rate supported by the ADUM2251ARIZ-RL?

The device supports data rates up to 1 Mbps for I²C communication.

Does the ADUM2251ARIZ-RL support hot swapping?

Yes, it is designed as a hot-swappable digital isolator, allowing connection while the bus is powered.