ADUM5401ARWZ-RL

Overview

The ADUM5401ARWZ-RL is a quad-channel digital isolator featuring an integrated isoPower isolated DC-DC converter. It provides four independent isolation channels with data rates up to 25 Mbps (NRZ). The device offers regulated 3.3 V or 5.0 V outputs from a 5.0 V input, delivering up to 500 mW of power. It utilizes iCoupler chip-scale transformer technology for signal and power isolation within a 16-lead SOIC package. Key electrical specifications include a 2500 Vrms isolation voltage, a common-mode transient immunity of >25 kV/µs, and a maximum propagation delay of 60 ns.

Feature Summary

• Integrates an isolated DC-DC converter providing regulated 3.3 V or 5.0 V output power without external components
• Employs iCoupler technology to isolate logic signals and power/feedback paths using on-chip transformers
• Delivers high common-mode transient immunity for robust performance in noisy environments
• Offers four independent unidirectional signal isolation channels in a compact surface-mount package

Applications

• RS-232, RS-422, and RS-485 transceiver isolation
• Industrial fieldbus isolation systems
• Isolated sensor interfaces
• Power supply startup biasing and gate driving
• Industrial PLC communication links

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout compatibility and regulatory approvals. Ensure PCB layout adheres to AN-0971 guidelines to meet emission standards due to the high-frequency switching nature of the integrated isoPower converter. Confirm operating temperature range requirements match the AR designation limits.

Selection Notes

Select this component when a fully integrated solution for both signal isolation and isolated power generation is required. It eliminates the need for separate isolated DC-DC converters in designs needing up to 500 mW of isolated power. Consider the 16-lead SOIC footprint and 7.6 mm creepage distance for space-constrained industrial enclosures requiring high isolation voltages.

Part Context

This part belongs to the ADuM540x family of quad-channel digital isolators from Analog Devices. These devices are designed to replace bulky magnetic and optical isolators while offering superior performance. The family leverages proprietary iCoupler technology to provide small form factor solutions for demanding industrial and automotive applications requiring galvanic isolation.

Replacement Considerations

Publicly confirmed substitute part numbers were not identified in the provided source material.