ADUM5403ARWZ

Overview

The ADUM5403ARWZ is a quad-channel digital isolator featuring an integrated isoPower DC-to-DC converter. It provides four independent isolation channels with unidirectional signal paths in a 16-pin SOIC package. The device supports data rates up to 25 Mb/s and offers a minimum common-mode transient immunity of 25 kV/µs. It operates on a supply voltage range of 3 V to 5.5 V, delivering up to 500 mW of isolated power. The component ensures electrical isolation with a rating of 2500 Vrms and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a high-efficiency DC-to-DC converter to provide isolated power without external components
• Utilizes iCoupler magnetic coupling technology for chip-level signal and power isolation
• Provides four independent bidirectional or unidirectional logic channels for flexible configuration

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering and energy management interfaces

Procurement Notes

Verify the specific suffix (e.g., ARWZ vs. ARWZ-RL) to confirm packaging type, as tube and reel variants exist. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the selected variant matches the required channel directionality and power output specifications for the target application design.

Selection Notes

Select this component when a single-chip solution for both signal isolation and isolated power generation is required. It eliminates the need for separate isolated DC/DC converters, reducing board space and component count. Consider the 16-SOIC package constraints and thermal dissipation capabilities when designing the PCB layout for optimal performance.

Part Context

This part belongs to the ADUM540x series of IsoPower digital isolators from Analog Devices. The series combines iCoupler technology with integrated power conversion to simplify designs in applications demanding high reliability and compact form factors. It serves as a key interface component in systems separating high-voltage domains from low-voltage control logic.

Replacement Considerations

ADUM5403ARWZ-RL is a verified substitute offering identical electrical characteristics but supplied in tape-and-reel packaging instead of tubes.