ADUM4150ARIZ

Overview

The ADUM4150ARIZ is a six-channel digital isolator from Analog Devices, designed for high-speed serial peripheral interface (SPI) applications. It operates with a supply voltage range of 3 V to 5.5 V and supports data rates up to 40 Mbps. The device provides 5 kVrms isolation voltage and exhibits a common-mode transient immunity of 25 kV/µs. Key electrical parameters include a propagation delay of 24 ns and an operating temperature range from -40°C to +125°C. It is housed in a 20-lead SOIC package.

Feature Summary

• Six isolated channels optimized for SPI communication
• High common-mode transient immunity capability
• Galvanic isolation barrier for signal integrity

Applications

• Isolated SPI bus interfaces
• Industrial control systems requiring galvanic separation
• Medical equipment signal isolation

Procurement Notes

Verify the specific suffix 'ARIZ' against the manufacturer's current datasheet to confirm pinout and packaging details. Ensure the design accounts for the 20-SOIC footprint dimensions. Confirm that the 5 kVrms isolation rating meets the safety requirements of the target application environment.

Selection Notes

Select this component when multiple isolated SPI lines are required within a single package. Consider the 40 Mbps speed limit for high-frequency data transmission needs. Evaluate the 24 ns propagation delay against system timing constraints. The wide operating temperature range supports harsh industrial environments.

Part Context

This part belongs to the ADuM family of capacitive isolation products from Analog Devices. It integrates six independent isolation channels into one compact solution, reducing board space compared to discrete isolators. The technology relies on silicon dioxide insulation layers for reliable signal transfer across the isolation barrier.

Replacement Considerations

Check for ADUM4150 variants with different suffixes or channel counts if pin compatibility differs. Verify equivalent performance metrics such as CMTI and propagation delay before substituting.