ADUM7240CRZ

Overview

The ADUM7240CRZ is a dual-channel digital isolator utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 3 V to 5.5 V, consuming a maximum of 1.2 mA per channel at 5 V. The device provides an isolation voltage of 1000 Vrms and supports data rates up to 25 Mb/s. Key electrical parameters include a propagation delay of 50 ns, rise/fall times of 2.5 ns typical, and a common-mode transient immunity of 15 kV/µs. It functions reliably across an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates high-speed CMOS circuitry with monolithic air-core transformer technology for signal transmission.
• Provides robust galvanic isolation between input and output sides without requiring external magnetics.
• Supports unidirectional data flow across two independent channels within a single package.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing certified safety isolation barriers
• Power electronics control circuits demanding high common-mode noise rejection

Procurement Notes

Verify the specific suffix (CRZ) against the manufacturer's current datasheet to confirm pinout compatibility and RoHS status. Confirm that the 8-SOIC package dimensions match your PCB footprint requirements. Ensure the selected variant meets the required insulation voltage ratings for your specific application safety standards before finalizing procurement.

Selection Notes

Select this component when dual-channel isolation is required with low power consumption and high speed. The 8-SOIC package offers a compact solution for space-constrained designs. Consider the 15 kV/µs CMTI rating for environments with significant electrical noise. Verify that the 3 V to 5.5 V supply range aligns with the system's available power rails.

Part Context

This part belongs to the ADuM7240 series of digital isolators from Analog Devices. It represents a family of devices leveraging proprietary iCoupler technology to replace traditional optocouplers in many applications. The series includes variants with different packaging options and temperature ranges to suit diverse industrial and commercial needs.

Replacement Considerations

Check for direct substitutes such as the ADUM7240ARZ-RL7 or other iCoupler-based isolators from Analog Devices. Ensure any replacement maintains the same 8-SOIC footprint and 1000 Vrms isolation rating. Verify that alternative parts meet the 25 Mbps data rate and 15 kV/µs CMTI specifications.