ADUM2251WARWZ

Overview

The ADuM2251WARWZ is a hot-swappable digital isolator featuring nonlatching, bidirectional communication channels compatible with I2C interfaces. It provides 5000 Vrms isolation voltage and supports data rates up to 1 Mb/s. The device offers a minimum common-mode transient immunity of 25 kV/µs. It operates within an extended temperature range from -40°C to +105°C and is qualified under AEC-Q100 standards for automotive applications. The component is housed in a 16-lead SOIC_W package.

Feature Summary

• Hot-swappable capability allows connection or disconnection while the system is powered without damage.
• Nonlatching bidirectional channels ensure reliable I2C interface compatibility.
• High common-mode transient immunity protects against noise-induced errors.

Applications

• Automotive electronic control units requiring isolated I2C buses
• Industrial systems with hot-swap sensor networks
• Medical equipment needing galvanic isolation for I2C communication

Procurement Notes

Verify the specific suffix WARWZ to confirm the 16-lead wide SOIC package and reel packaging configuration. Confirm AEC-Q100 qualification status if automotive grade compliance is required. Check moisture sensitivity level handling requirements during assembly. Ensure the bidirectional channel configuration matches the target I2C topology.

Selection Notes

Select this component when hot-swappable I2C isolation is necessary. The bidirectional nature supports standard I2C protocols without additional logic. High CMTI ensures signal integrity in noisy environments. Verify that the 1 Mbps speed meets the application's timing requirements.

Part Context

This part belongs to the ADuM225x series of hot-swappable digital isolators. It complements the ADuM2250 by providing one unidirectional and one bidirectional channel, whereas the ADuM2250 offers two bidirectional channels. Both share similar isolation and thermal specifications.

Replacement Considerations

The ADUM2250WARWZ serves as a functional alternative if two bidirectional channels are preferred over one unidirectional and one bidirectional channel. Verify pinout compatibility and channel directionality before substitution.

FAQ

Is the ADUM2251WARWZ suitable for hot-swapping applications?

Yes, it is specifically designed as a hot-swappable digital isolator for I2C interfaces.

What is the maximum data rate supported by this isolator?

The device supports data rates up to 1 Mb/s.