ADUM1252AWA+T

Overview

The ADUM1252AWA+T is a two-channel bidirectional digital isolator from Analog Devices, designed for I2C applications. 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 per side, ensuring robust galvanic isolation. Packaged in an 8-pin WSOIC format, it provides enhanced hot-swappable capabilities on the second side to prevent bus contention during connection.

Feature Summary

• Bidirectional I2C channel support with dedicated buffering on the first side to regulate logic low voltage levels
• Enhanced hot-swap functionality on the second side utilizing pre-charging and bus state monitoring
• Independent dual power supply domains supporting wide voltage ranges for flexible logic level interfacing
• Robust electrical isolation via magnetic coupling with high common-mode transient rejection

Applications

• Isolated I2C and SMBus interfaces
• Battery management systems
• Power over Ethernet (PoE) controllers
• Motor control systems

Procurement Notes

Verify the specific suffix 'T' against official documentation to confirm reel packaging requirements. Ensure compatibility with the 8-pin WSOIC footprint. Cross-reference the manufacturer's latest lifecycle status as availability may be restricted. Confirm that the insulation ratings meet the safety standards required for the target application environment.

Selection Notes

Select this component when bidirectional I2C communication requires galvanic isolation with hot-swap protection. The independent power domains allow for different voltage levels on each side. Consider the 445 Vrms insulation rating for safety compliance. Evaluate the 2 MHz maximum data rate against system timing requirements.

Part Context

This part belongs to the ADuM125x series of digital isolators. It utilizes Analog Devices' iCoupler technology for signal transmission across the isolation barrier. The series is optimized for high-speed serial protocols like I2C and SPI, offering low power consumption and small form factors suitable for dense PCB layouts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.