ADUM4470ARIZ

Overview

The ADUM4470ARIZ is a quad-channel digital isolator from Analog Devices Inc., featuring an integrated isolated DC-to-DC power supply. It provides 5000 Vrms isolation voltage and supports data rates up to 25 Mbps with a common-mode transient immunity of 25 kV/µs. The device operates on dual supplies ranging from 3 V to 3.6 V and 4.5 V to 5.5 V, with a maximum propagation delay of 60 ns. 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 isolated DC-to-DC converter for self-powered operation
• Utilizes iCoupler magnetic coupling technology for signal transmission
• Provides four unidirectional signal channels with high common-mode transient immunity

Applications

• Isolated PWM feedback control in switch-mode power supplies
• Gate drive signal isolation for power electronics
• Data acquisition systems requiring galvanic isolation

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and tape-and-reel configuration. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure the source document explicitly lists this part number as active or recommended for new designs to avoid obsolescence risks.

Selection Notes

Select this component when both high-speed digital isolation and isolated power delivery are required in a single package. Compare channel count and data rate requirements against other members of the ADuM447x family. Verify that the integrated power supply output meets the load requirements of the isolated side circuitry.

Part Context

This part belongs to the ADuM447x series of quad-channel digital isolators with integrated isolated power supplies. It shares architectural similarities with the ADUM4470CRIZ but differs in packaging and reel specifications. The series utilizes proprietary iCoupler technology to replace traditional optocouplers and transformers.

Replacement Considerations

ADUM4470CRIZ-RL is listed as a parameter-equivalent substitute.