ADUM1250WARZ

Overview

The ADUM1250WARZ is a dual-channel digital isolator utilizing iCoupler magnetic coupling technology. It provides bidirectional communication channels compatible with I2C interfaces, supporting data rates up to 1 Mbps. The device operates within a supply voltage range of 3 V to 5.5 V and features an insulation voltage of 2500 Vrms. It includes integrated hot-swap protection circuits to prevent bus faults during insertion. The component is housed in an 8-lead SOIC package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates two fully isolated bidirectional channels for complete I2C interface isolation without signal splitting.
• Includes dedicated hot-swap circuitry to protect the bus when inserting unpowered cards into active systems.
• Utilizes iCoupler magnetic coupling technology to provide high common-mode transient immunity.

Applications

• Isolated I2C, SMBus, or PMBus interfaces
• Multi-master I2C bus systems
• Battery management solutions (BMS)
• Industrial automation and motor control

Procurement Notes

Verify current availability status as this part number may be discontinued or subject to limited supply constraints. Confirm that the required automotive qualification and wide operating temperature range align with specific design requirements before finalizing procurement plans.

Selection Notes

Select this component for applications requiring robust isolation between I2C masters and slaves in noisy environments. Ensure the design accommodates the 8-SOIC package dimensions and verifies compatibility with the 3 V to 5.5 V supply rails. Consider the 2500 Vrms isolation rating for safety compliance needs.

Part Context

This device belongs to the ADUM1250 series of digital isolators designed specifically for I2C bus isolation. It replaces traditional optocouplers by eliminating the need for separate transmit and receive lines, simplifying board layout while maintaining high-speed data integrity across isolation barriers.

Replacement Considerations

The ADUM1250WSRZ is listed as a similar replacement option. Verify pinout compatibility and ensure the alternative meets all thermal and electrical specifications required for the existing application.

FAQ

Does the ADUM1250WARZ support hot-swapping?

Yes, it includes built-in hot-swap protection circuits to prevent data corruption when inserting unpowered cards into an active bus.

What is the maximum data rate supported?

The device supports data rates up to 1 Mbps.