ADUM4474ARIZ

Overview

The ADUM4474ARIZ is a quad-channel digital isolator from Analog Devices, featuring magnetic coupling technology and an integrated isolated DC/DC power supply. It operates within a 3 V to 5.5 V supply range and supports data rates up to 25 Mb/s. The device provides 5000 Vrms isolation voltage with a propagation delay of 55 ns. It is housed in a 20-lead SOIC package and functions across a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a regulated DC/DC converter for isolated power delivery
• Provides four unidirectional signal channels
• Utilizes iCoupler magnetic coupling technology

Applications

• PWM controller and transformer driver circuits
• Industrial automation systems requiring galvanic isolation
• Power electronics interfaces

Procurement Notes

Verify the specific suffix 'ARIZ' against the manufacturer's current datasheet to confirm pinout and electrical specifications. Check for moisture sensitivity level (MSL) requirements during storage and handling. Confirm availability status as distribution may vary by region.

Selection Notes

Select this component when a single-chip solution for both signal isolation and isolated power generation is required. Ensure the 25 Mb/s data rate meets system timing requirements. Verify that the 20-SOIC package dimensions fit the PCB layout constraints.

Part Context

This part belongs to the ADuM447x series of quad-channel digital isolators. These devices combine high-speed signal isolation with an integrated isolated power supply, reducing the component count compared to discrete solutions using separate isolators and converters.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.