ADUM5403CRWZ

Overview

The ADUM5403CRWZ is a quad-channel digital isolator featuring an integrated isoPower DC-to-DC converter. It provides four isolated data channels supporting data rates up to 25 Mbps using Non-Return-to-Zero (NRZ) signaling. The device includes a regulated power output available at either 3.3 V or 5.0 V, delivering up to 500 mW of isolated power. It utilizes magnetic coupling technology for signal isolation with a rated insulation voltage of 2500 Vrms. The component is housed in a 16-lead SOIC package with a creepage distance of 7.6 mm and operates within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a high-efficiency DC-to-DC converter providing up to 500 mW of regulated isolated power
• Provides four independent bidirectional signal isolation channels
• Utilizes iCoupler magnetic coupling technology for robust signal transmission
• Features a wide operating temperature range suitable for industrial environments

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced isolation barriers
• Inverter drives and motor control circuits
• Isolated communication interfaces such as RS-485 and CAN bus

Procurement Notes

Verify the specific suffix and packaging configuration against official Analog Devices documentation before procurement. Confirm that the integrated DC/DC converter output voltage matches the system requirement of 3.3 V or 5.0 V. Ensure the 16-lead SOIC footprint aligns with the PCB layout design. Check for any recent product change notices regarding assembly sites or materials.

Selection Notes

Select this component when a single solution is needed for both signal isolation and isolated power generation. It is suitable for applications requiring four isolated channels without external transformer components. Consider the 25 Mbps data rate limit and the 500 mW power budget. Verify that the 2500 Vrms insulation rating meets the safety standards of the target application.

Part Context

This part belongs to the ADuM family of digital isolators from Analog Devices. It combines the company's proprietary iCoupler technology with an integrated switching regulator. The series is designed to replace traditional optocouplers and discrete transformers, offering higher reliability and smaller form factors in interface applications.

Replacement Considerations

Check for direct pin-compatible alternatives within the ADUM540x series. Verify if the ADUM5401 or ADUM5402 variants meet channel count requirements. Ensure substitute parts support the same 25 Mbps data rate and 500 mW power output specifications.