ADUM2250ARIZ-RL

Overview

The ADUM2250ARIZ-RL is a hot-swappable, dual-channel I2C digital isolator manufactured by Analog Devices Inc. It utilizes iCoupler magnetic coupling technology to provide galvanic isolation between circuits. The device supports bidirectional data transmission at a maximum data rate of 1 Mbps with a minimum common-mode transient immunity (CMTI) of 25 kV/µs. It operates within a supply voltage range of 3 V to 5.5 V and features a 5000 Vrms isolation rating. The component is housed in a 16-SOIC package and is designed for applications requiring robust signal integrity across isolated boundaries.

Feature Summary

• Supports hot-swappable operation on the I2C bus without causing system crashes or data corruption
• Provides bidirectional communication capability for standard I2C protocols
• Integrates high-speed magnetic coupling technology for reliable signal transmission
• Offers high common-mode transient immunity to maintain performance in noisy environments

Applications

• Isolating I2C buses in industrial automation systems
• Connecting microcontrollers to sensors in automotive electronics
• Protecting control circuits in medical equipment
• Implementing isolated interfaces in test and measurement instrumentation

Procurement Notes

Verify the specific suffix 'ARIZ-RL' to ensure compatibility with required packaging and temperature grades. Confirm that the 16-SOIC footprint matches the target PCB design. Check for RoHS compliance status if environmental regulations apply to the end product. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when bidirectional I2C isolation is required with hot-swap capability. Consider the 1 Mbps data rate limit for high-speed communication needs. Evaluate the 5000 Vrms isolation voltage against system safety requirements. Compare power consumption characteristics against other isolators if energy efficiency is a critical design constraint.

Part Context

This part belongs to the ADuM225x series of digital isolators from Analog Devices. It is specifically engineered for I2C applications, distinguishing it from general-purpose isolators like the ADUM4473. The series leverages silicon dioxide insulation technology to achieve high reliability and small form factor integration compared to traditional transformer-based solutions.

Replacement Considerations

The ADUM2251ARIZ-RL is a documented substitute offering similar isolation characteristics. Verify pinout compatibility and electrical specifications before substitution. Ensure the alternative component meets the same hot-swap and bidirectional requirements.