ADUM4474ARIZ-RL

Overview

The ADUM4474ARIZ-RL is a quad-channel digital isolator from Analog Devices, featuring an integrated isolated power supply controller. It provides 5000 Vrms isolation voltage and supports data rates up to 25 Mb/s with magnetic coupling technology. The device operates on a single 3 V to 5.5 V supply, drawing 52 mA of operating current. It exhibits a propagation delay of 55 ns and maintains a common-mode transient immunity of 25 kV/µs. Designed for surface mount installation, it is housed in a 20-SOIC package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a regulated dc-to-dc isolated power supply controller to eliminate external transformer requirements
• Provides high-speed bidirectional signal transmission via magnetic coupling technology
• Delivers robust noise immunity with a common-mode transient immunity rating of 25 kV/µs

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power electronics control circuits with isolated gate driving needs

Procurement Notes

Verify the specific suffix 'RL' confirms the reel packaging format against official documentation. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning. Ensure the supplier source matches Analog Devices Inc. specifications to avoid counterfeit components. Check for any recent product change notices affecting pinout or electrical characteristics.

Selection Notes

Select this component when a compact solution combining four isolated channels with an integrated power supply is required. It is suitable for designs where space constraints prevent the use of discrete transformers. Consider the 20-SOIC footprint and thermal performance for PCB layout optimization. Verify that the 25 Mb/s data rate meets the system timing requirements.

Part Context

This part belongs to the ADuM447x family of quad-channel digital isolators. These devices are designed to replace traditional optocouplers and transformer-based solutions. The series offers improved performance in speed, power consumption, and reliability. The ADUM4474 variant specifically includes the isolated power supply controller functionality.

Replacement Considerations

ADUM4474CRIZ is a tube-packaged equivalent within the same functional family.