ADUM1400WTRWZ

Overview

The ADUM1400WTRWZ is a four-channel digital isolator utilizing iCoupler technology, housed in a 16-pin SOIC package. It operates on a supply voltage range of 2.7V to 5.5V with a typical supply current of 11.0 mA. The device supports data rates up to 10 Mbit/s and features a maximum propagation delay of 100 ns. Key electrical parameters include rise and fall times of 2.5 ns, an isolation voltage of 2500 Vrms, and a common-mode transient immunity of 25 kV/µs. It functions within an operating temperature range of -40°C to 125°C.

Feature Summary

• Integrates four independent unidirectional signal channels using monolithic air-core transformer technology for robust signal isolation.
• Provides high common-mode transient immunity to protect against rapid voltage changes across the isolation barrier.
• Eliminates the need for external components typically required by optical couplers, such as LEDs or discrete drivers.

Applications

• Isolation for RS-485 and RS-422 communication interfaces
• Industrial fieldbus system isolation
• General-purpose digital signal isolation in noisy environments

Procurement Notes

Verify the specific suffix 'WTRWZ' to confirm the wide temperature range (-40°C to 125°C) and tube packaging configuration. Ensure compatibility with the target PCB footprint for the 16-SOIC package. Cross-reference the manufacturer's latest datasheet revision to confirm pinout consistency and any recent parameter updates before finalizing procurement orders.

Selection Notes

Select this component when four isolated bidirectional channels are not required, as it provides only unidirectional paths. It is suitable for applications needing moderate data speeds up to 10 Mbps where power consumption must be lower than that of optocouplers. Consider alternative models if integrated isolated power supplies or higher data rate capabilities are necessary for the design.

Part Context

This part belongs to the ADUM1400 series of general-purpose digital isolators from Analog Devices. It utilizes proprietary iCoupler technology to replace traditional optocouplers, offering superior reliability and smaller form factors. The series includes variants with different channel counts and data rate specifications to suit various industrial and automotive interface requirements.

Replacement Considerations

The ADUM1400ARWZ serves as a direct functional substitute within the same family. Verify that the replacement variant meets the specific thermal and packaging requirements of the existing design layout.