ADUM6404ARIZ

Overview

The ADUM6404ARIZ is a quad-channel digital isolator from Analog Devices, featuring integrated isoPower isolated DC-to-DC converters. It provides four independent channels with unidirectional signal transmission at data rates up to 25 Mb/s. The device offers 5000 Vrms isolation voltage and supports power supply voltages between 3 V and 5.5 V. Packaged in a 16-pin SOIC, it operates within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates isolated DC-to-DC converters for each channel, eliminating the need for external isolated power supplies.
• Provides high common-mode transient immunity to protect against fast-switching noise in industrial environments.
• Supports unidirectional signal transmission across four independent channels for reliable data isolation.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing safe patient isolation
• Inverters and motor drives with high dv/dt noise
• Isolated communication interfaces such as RS-485 and CAN

Procurement Notes

Verify the specific suffix 'ARIZ' to confirm the 16-pin SOIC package and commercial/industrial temperature rating. Ensure the design accounts for the integrated DC-DC converter requirements, including appropriate decoupling capacitors on both sides of the isolation barrier. Confirm that the application voltage does not exceed the maximum ratings specified in the official datasheet.

Selection Notes

Select this component when four isolated channels are required without external isolated power sources. It is suitable for applications demanding high CMTI and moderate data rates up to 25 Mb/s. Consider the thermal performance of the SOIC package if multiple channels are active simultaneously. Verify that the input logic levels match the system requirements for the 3V to 5.5V operating range.

Part Context

This part belongs to the ADUM6404 series of iCoupler digital isolators. It combines magnetic coupling technology with integrated power conversion. The series is designed for robust isolation in noisy environments. Other variants may differ in channel count, directionality, or package type.

Replacement Considerations

Check for direct pin-compatible replacements within the same ADUM6404 family. Verify that any substitute maintains the same integrated DC-DC converter functionality and isolation voltage ratings. Ensure the alternative part supports the required 25 Mb/s data rate and 16-pin SOIC footprint.