ADUM1241ARZ

Overview

The ADUM1241ARZ is a micropower, dual-channel digital isolator utilizing iCoupler magnetic coupling technology. It features bidirectional data transmission with default high directionality (1/1). Key electrical parameters include a data rate of 2 Mb/s, isolation voltage of 3750 Vrms, and common-mode transient immunity of 25 kV/µs. The device operates on a supply voltage range of 2.25 V to 3.6 V with a typical operating current of 306 µA per channel. Propagation delay is 180 ns maximum. It is housed in an 8-SOIC package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates two independent channels for bidirectional signal isolation using proprietary iCoupler magnetic coupling technology.
• Provides high common-mode transient immunity to reject noise in electrically noisy environments.
• Designed for low power consumption suitable for battery-operated or energy-efficient applications.
• Features default high logic state directionality for simplified interface configuration.

Applications

• General-purpose digital isolation for industrial communication buses
• Isolation for sensor interfaces in harsh environments
• Power management circuit monitoring and control

Procurement Notes

Verify the specific suffix 'ARZ' confirms the SOIC-8 package and lead-free RoHS compliance. Confirm the manufacturer is Analog Devices Inc. Ensure the datasheet matches the 2 Mb/s data rate and 3750 Vrms isolation rating. Check for moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when bidirectional isolation with default high directionality is required. It is suitable for applications needing low power consumption and moderate data rates up to 2 Mb/s. Consider the 8-SOIC package constraints and the 2.25 V to 3.6 V supply voltage range. Verify that the 3750 Vrms isolation barrier meets system safety standards.

Part Context

The ADUM1241ARZ belongs to the ADuM124x family of micropower digital isolators. This series includes variants like ADUM1240, ADUM1245, and ADUM1246, which differ primarily in channel directionality configurations. All share the same core iCoupler technology and physical footprint, allowing for design flexibility within isolated systems.

Replacement Considerations

Direct substitutes within the same family include ADUM1240, ADUM1245, and ADUM1246, provided their specific channel directionality matches the design requirements. Cross-family replacements require verification of isolation voltage, data rate, and package compatibility.

FAQ

What is the default logic directionality of the ADUM1241ARZ?

The ADUM1241ARZ has a default high directionality, meaning both channels are configured as 1/1 (input on side 1, output on side 2).

What technology does the ADUM1241ARZ use for isolation?

It uses Analog Devices' iCoupler technology, which relies on magnetic coupling through on-chip transformers rather than optical or capacitive methods.