ADUM4471CRIZ-RL

Overview

The ADUM4471CRIZ-RL is a four-channel digital isolator from Analog Devices, featuring integrated isolated DC/DC converter capability. It provides 5000Vrms isolation voltage and supports data rates up to 25Mbps with a common-mode transient immunity of 25kV/µs. The device operates on supply voltages of 3V to 3.6V or 4.5V to 5.5V, with propagation delays of 60ns maximum. It utilizes magnetic coupling technology in a 20-SOIC package.

Feature Summary

• Integrates an isolated power supply function within the digital isolator architecture
• Provides high-speed unidirectional signal transmission across isolation barriers
• Features robust electromagnetic interference rejection capabilities

Applications

• Pulse Width Modulation (PWM) control circuits
• Transistor driver interfaces requiring galvanic isolation
• Industrial automation systems with high noise environments

Procurement Notes

Verify the specific suffix 'RL' indicates reel packaging when sourcing. Confirm the manufacturer part number matches exactly to ensure correct channel configuration and isolation ratings. Check for RoHS compliance status and moisture sensitivity level requirements before integration into production assemblies.

Selection Notes

Select this component when both signal isolation and isolated power delivery are required in a single package. Compare against standard isolators if external isolated power supplies are acceptable to reduce board space. Ensure the 25Mbps data rate meets system timing requirements and that the 20-SOIC footprint fits the design constraints.

Part Context

This part belongs to the ADuM447x family of IsoPower digital isolators. It combines four-channel isolation with an integrated DC/DC converter, distinguishing it from standard isolators like the ADUM4470 which lack internal power conversion. The series is designed for applications demanding compact solutions with high isolation integrity.

Replacement Considerations

The ADUM4470CRIZ is a parameter-equivalent alternative but lacks the integrated isolated power supply feature. Verify if the application can support an external isolated power source before substituting.