ADUM1252ASA+T

Overview

The ADUM1252ASA+T is a dual-channel bidirectional digital isolator designed for I2C interfaces. It features magnetic coupling technology with an insulation voltage of 445 Vrms and supports data rates up to 2 MHz. The device operates on independent power supplies ranging from 1.71 V to 5.5 V on both sides, providing galvanic isolation in an 8-pin SOIC package.

Feature Summary

• Provides two bidirectional open-drain channels specifically optimized for I2C bus communication
• Integrates enhanced hot-swap protection circuitry to prevent bus contention during connection
• Features low output logic voltage levels to ensure compatibility with various I2C devices
• Supports independent supply voltages for flexible level shifting between different logic families

Applications

• Isolated I2C and SMBus interface connections
• Battery management systems requiring isolated monitoring
• Power over Ethernet (PoE) controller interfaces
• Motor control system signal isolation

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm tape-and-reel packaging configuration. Ensure the component matches the required RoHS compliance status and lead-free specifications before integration into production workflows.

Selection Notes

Select this component when designing circuits requiring robust isolation for bidirectional I2C buses with hot-swap capabilities. It is suitable for applications needing independent supply domains and high common-mode transient immunity across the isolation barrier.

Part Context

This part belongs to the ADUM1252 series of iCoupler digital isolators. It utilizes proprietary chip-scale transformer technology to provide electrical isolation without the limitations of traditional optical couplers, offering superior reliability and smaller form factors.

Replacement Considerations

Consult official substitution guides for verified alternatives such as the ADUM1250 or ADUM1251 series. Confirm that any replacement maintains identical channel count, isolation voltage ratings, and thermal performance characteristics.