ADUM1252ASA+

Overview

The ADUM1252ASA+ is a two-channel bidirectional digital isolator designed for I2C applications. It features galvanic isolation with an insulation voltage of 445 VRMS and operates within a supply voltage range of 1.71 V to 5.5 V on both sides. The device supports data rates up to 2 MHz and includes dedicated buffers to regulate logic low voltages, ensuring compatibility with I2C standards. It utilizes iCoupler technology for signal transmission across the isolation barrier.

Feature Summary

• Provides two independent bidirectional channels for I2C data transmission
• Integrates specialized output buffers to adjust logic low voltage levels for improved bus compatibility
• Supports hot-plug connections through pre-charging mechanisms that prevent bus interference
• Delivers robust electrical isolation using magnetic coupling technology

Applications

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

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches SOIC-8 requirements. Ensure supply chain sources provide valid traceability documentation. Cross-reference part numbers with Analog Devices databases to avoid counterfeit components during procurement processes.

Selection Notes

Select this component when designing circuits requiring bidirectional I2C isolation with specific logic level adjustments. The integrated buffer capabilities address compatibility issues common in standard isolators. Consider the wide supply voltage range for systems utilizing varying logic levels between isolated domains.

Part Context

This part belongs to the ADuM1252 series of digital isolators from Analog Devices. The series focuses on providing reliable isolation for high-speed serial communication protocols. The ASA+ suffix indicates a specific package variant within the broader product family designed for surface mount applications.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical parameter alignment before replacing. Ensure any substitute maintains the required isolation voltage and channel count for the specific application design.