ADUM2250ARWZ

Overview

The ADUM2250ARWZ is a hot-swappable, dual-channel digital isolator designed for I2C bus applications. It provides bidirectional data isolation with a maximum data rate of 1 Mb/s and an insulation voltage of 5000 Vrms. The device features high common-mode transient immunity of 25 kV/µs and operates within a supply voltage range of 3 V to 5.5 V. Typical operating supply currents are 2.7 mA and 2.8 mA per channel. Propagation delay is specified at 162 ns. It functions reliably across an extended temperature range from -40°C to +105°C and is housed in a 16-lead SOIC package.

Feature Summary

• Supports hot-swappable operation on I2C buses without causing system lockups
• Utilizes magnetic coupling technology for galvanic isolation
• Provides bidirectional signal transmission for SDA and SCL lines

Applications

• I2C bus isolation in industrial automation systems
• Isolating microcontrollers from peripheral devices in medical equipment
• Protecting control circuits in automotive infotainment interfaces

Procurement Notes

Verify the specific suffix (e.g., RL) against the datasheet to confirm packaging type. Confirm RoHS compliance status through official manufacturer documentation. Ensure the order matches the exact pinout and thermal requirements for the SOIC-16 package. Cross-reference the part number with Analog Devices to avoid counterfeit components.

Selection Notes

Select this component when I2C bus isolation requires hot-swap capability and high common-mode transient immunity. It is suitable for designs needing 5 kVrms isolation between low-voltage logic and higher-voltage domains. Consider the 16-pin SOIC footprint for PCB layout constraints. Verify that the 1 Mb/s data rate meets the system timing requirements.

Part Context

This device belongs to the ADuM225x series of digital isolators from Analog Devices. It is part of the broader interface IC portfolio focused on reliable signal transmission across isolated boundaries. The series utilizes cmosSOIC technology to combine high performance with small form factors.

Replacement Considerations

Check for direct substitutes within the ADuM225x family. Verify compatibility of isolation voltage and data rates with alternative parts. Ensure pin-to-pin compatibility if replacing in existing designs.