ADUM1240ARSZ-RL7

Overview

The ADUM1240ARSZ-RL7 is a micropower, dual-channel digital isolator manufactured by Analog Devices Inc. It utilizes iCoupler magnetic coupling technology to provide electrical isolation between circuits. The device features a bidirectional channel configuration and supports data rates up to 2 Mbps. It offers an isolation voltage rating of 3750 Vrms and a common-mode transient immunity of 25 kV/µs. Operating within a supply voltage range of 2.25 V to 3.6 V, it is housed in a 20-SSOP package with a width of 5.30 mm. The component operates reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Dual-channel bidirectional digital isolation using magnetic coupling technology
• High common-mode transient immunity for reliable signal transmission
• Micropower operation suitable for energy-efficient designs

Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment signal interface isolation
• Power management circuit monitoring interfaces

Procurement Notes

Verify the specific suffix ARSZ against official Analog Devices documentation to confirm the exact package variant and tape-and-reel specifications. Ensure compatibility with standard surface-mount assembly processes for the 20-SSOP footprint. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when bidirectional communication is required across an isolation barrier with moderate data rate needs. The dual-channel architecture simplifies board layout compared to single-channel alternatives. Consider the 20-SSOP package dimensions for space-constrained applications. Verify that the 3750 Vrms isolation rating meets the safety requirements of the target application environment.

Part Context

This part belongs to the ADuM124x series of micropower digital isolators from Analog Devices. The series leverages iCoupler technology to replace traditional optocouplers, offering improved performance and reliability. The ADUM1240 specifically provides two independent channels, making it distinct from single-channel variants like the ADUM1241 or quad-channel options within the broader family.

Replacement Considerations

The ADUM1240ARZ is a verified equivalent part number offering identical electrical characteristics and functionality. Substitution should be confirmed by checking datasheet revisions and package tolerance alignments.