ADUM1441ARSZ

Digital Isolators Overview

The ADUM1441ARSZ is a micro-power quad-channel digital isolator utilizing Analog Devices iCoupler magnetic coupling technology. It features bidirectional data transmission with a maximum data rate of 2 Mb/s and a typical propagation delay of 180 ns. The device operates on a single power supply ranging from 2.25 V to 3.6 V, drawing approximately 672 uA per channel. It provides an isolation voltage of 2500 Vrms and supports a common-mode transient immunity of 25 kV/µs. Operating temperatures range from -40°C to +125°C within a 20-lead SSOP package.

Digital Isolators Feature Summary

• Integrates four independent bidirectional channels for simultaneous signal isolation
• Employs proprietary iCoupler technology for robust magnetic signal coupling
• Delivers high common-mode transient immunity for noise-resistant performance
• Supports wide operating temperature ranges suitable for industrial environments

Digital Isolators Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment needing safe patient isolation barriers
• Power management circuits for monitoring and feedback loops
• Isolated gate driver interfaces in motor control applications

Digital Isolators Procurement Notes

Verify the specific suffix configuration when ordering, as the standard tube packaging differs from the tape-and-reel variant indicated by the RL7 suffix. Confirm availability status directly with authorized distributors, as stock levels may be restricted. Ensure that the selected package type aligns with your PCB footprint requirements before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when four isolated channels are required within a compact form factor. The low quiescent current makes it suitable for battery-powered or energy-constrained designs. Verify that the 2 Mb/s data rate meets the system timing requirements. Consider the 2500 Vrms isolation rating against the specific safety standards applicable to the target application environment.

Digital Isolators Part Context

This part belongs to the ADuM144x family of micro-power digital isolators. These devices integrate CMOS sensor technology with air-core coil transformers on a single silicon substrate. The family offers various directionality options, including the default high configuration found in this model. They replace traditional optocouplers while offering superior reliability and lower power consumption.

Digital Isolators Replacement Considerations

Compatible substitutes include other members of the ADuM144x series such as the ADUM1440, ADUM1442, ADUM1445, ADUM1446, and ADUM1447. These variants share identical pinouts and physical dimensions but differ in channel directionality configurations. Ensure the replacement matches the required signal flow direction for each isolated channel.