ADUM4471CRIZ

Overview

The ADUM4471CRIZ is a general-purpose digital isolator from Analog Devices Inc., utilizing iCoupler magnetic coupling technology. It features four unidirectional channels with a 5000Vrms isolation voltage and 25Mbps data rate. The device offers 25kV/µs common-mode transient immunity, 60ns maximum propagation delay, and operates on 3V–3.6V or 4.5V–5.5V supplies within a -40°C to 105°C range in a 20-SOIC package.

Feature Summary

• Integrates an isolated DC/DC converter for power delivery across the isolation barrier
• Provides high-speed digital signal transmission via magnetic coupling
• Ensures robust noise immunity against rapid voltage transients

Applications

• Pulse Width Modulation (PWM) control systems
• Transformer driver circuits
• Industrial automation interfaces

Procurement Notes

Verify the specific suffix 'CRIZ' matches your design requirements, as it denotes the tape-and-reel packaging variant. Confirm that the integrated power supply functionality aligns with your system's isolation architecture. Ensure compatibility with the 20-SOIC footprint during layout. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when bidirectional communication is unnecessary, as it supports only unidirectional data flow. It is suitable for applications requiring integrated isolated power alongside signal isolation. Consider the 25Mbps speed limit for high-frequency signaling needs. Evaluate the thermal performance within the specified operating temperature range.

Part Context

This part belongs to the ADuM447x family of digital isolators. It shares architectural similarities with the ADUM4470 but includes an integrated isolated power supply. This integration simplifies board design by reducing external component count compared to standard isolators requiring separate isolated power sources.

Replacement Considerations

The ADUM4470CRIZ-RL is a parameter-equivalent substitute. Verify channel directionality and power supply integration differences before substitution.