ADUM1250WSRZ

Overview

The ADUM1250WSRZ is a dual-channel digital isolator utilizing iCoupler magnetic coupling technology. It supports I2C bus isolation with bidirectional data transmission at rates up to 400 kb/s. The device operates on supply voltages ranging from 3 V to 5.5 V and provides an insulation voltage of 2500 Vrms. Key electrical parameters include a propagation delay of 162 ns, typical power consumption of 2.7 mA and 2.8 mA per channel, and common-mode transient immunity of 25 kV/µs. It is housed in an SOIC-8 package and qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Supports hot-swappable I2C bus communication with bidirectional signal transfer
• Provides robust galvanic isolation via integrated microtransformer technology
• Features high common-mode transient immunity for reliable noise rejection

Applications

• Isolation of I2C buses in industrial automation systems
• Signal isolation in automotive electronic control units
• Data isolation in medical instrumentation interfaces

Procurement Notes

Verify the specific suffix 'WSRZ' against official Analog Devices documentation to confirm package type and reel specifications. Ensure compliance with AEC-Q100 qualification requirements if deploying in automotive environments. Cross-reference datasheet revisions to confirm pinout compatibility and thermal characteristics before integration into final designs.

Selection Notes

Select this component when designing isolated I2C interfaces requiring bidirectional data transfer within the 400 kb/s speed range. It is suitable for applications demanding 2500 Vrms isolation between low-voltage logic domains. Consider the SOIC-8 footprint and operating temperature range when evaluating board space and environmental constraints.

Part Context

This part belongs to the ADUM1250 series of iCoupler digital isolators. It is designed specifically for isolating I2C and SMBus protocols. The series offers a compact solution for replacing traditional optocouplers, providing higher reliability and smaller form factors while maintaining necessary isolation barriers for sensitive interface circuits.

Replacement Considerations

ADUM1250ARZ

FAQ

What is the maximum data rate supported by this isolator?

The ADUM1250WSRZ supports data rates up to 400 kb/s, which is sufficient for standard and fast-mode I2C communications.

Does this device support hot-swapping?

Yes, the ADUM1250WSRZ is designed to support hot-swappable I2C bus operations without damaging the device or disrupting communication.