ADUM3402ARWZ

Overview

The ADUM3402ARWZ is a quad-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It features four independent channels with bidirectional signal transmission in a 16-lead SOIC package. The device operates on a supply voltage range of 2.7 V to 5.5 V and supports data rates up to 1 Mb/s. Key electrical parameters include an isolation voltage of 2500 Vrms, a common-mode transient immunity of 25 kV/µs, and propagation delays of 100 ns. It functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates four isolated channels using proprietary iCoupler magnetic coupling technology for high-speed data transmission.
• Provides bidirectional signal paths across all four channels to support complex interface requirements.
• Delivers robust system-level protection through high common-mode transient immunity and enhanced ESD reliability.

Applications

• Industrial automation systems requiring galvanic isolation between microcontrollers and peripheral devices
• Medical equipment interfaces needing reliable signal separation and patient safety compliance
• Power electronics control circuits isolating gate drivers from low-voltage logic controllers

Procurement Notes

Verify the specific suffix 'ARWZ' against official Analog Devices documentation to confirm the exact temperature grade and packaging configuration. Ensure compatibility with the target PCB footprint for the 16-SOIC package. Confirm that the required data rate and isolation voltage meet the application's safety standards before finalizing procurement.

Selection Notes

Select this component when bidirectional communication is required across four isolated channels. It is suitable for applications demanding moderate data speeds up to 1 Mb/s rather than high-speed gigabit links. Consider the 2500 Vrms isolation rating as sufficient for standard industrial and medical isolation barriers where higher voltages are not mandated.

Part Context

This part belongs to the ADuM340x family of quad-channel digital isolators. It shares the same physical package and basic functionality as the ADUM3400 and ADUM3401, differing primarily in channel directionality and internal configuration. The series represents a transition from older transformer-based solutions to integrated silicon magnetic coupling.

FAQ

Is the ADUM3402ARWZ capable of unidirectional signal transmission?

No, the ADUM3402 variant specifically provides bidirectional signal transmission for all four channels, unlike the ADUM3400 which is unidirectional.

What is the maximum common-mode transient immunity specified for this device?

The device specifies a minimum common-mode transient immunity (CMTI) of 25 kV/µs, ensuring reliable operation during rapid voltage changes across the isolation barrier.