ADUM1401WTRWZ

Overview

The ADUM1401WTRWZ is a quad-channel digital isolator utilizing iCoupler magnetic coupling technology. It operates on a single 2.7 V to 5.5 V supply and provides four independent isolation channels with unidirectional signal transmission. The device supports data rates up to 90 Mb/s, features a propagation delay of 34 ns, and offers an isolation voltage of 2500 Vrms. It includes a patented refresh mechanism for DC correctness and achieves a common-mode transient immunity of 25 kV/µs. Packaged in a 16-lead SOIC (wide) suitable for surface mount applications.

Feature Summary

• Implements iCoupler magnetic coupling technology to replace traditional optocouplers without requiring external drivers or discrete components.
• Features a patented refresh mechanism that ensures correct DC output levels even when input logic transitions are absent or power is missing.
• Provides high common-mode transient immunity of 25 kV/µs to maintain signal integrity in electrically noisy environments.

Applications

• Isolation for SPI interfaces and data converters
• General-purpose multi-channel signal isolation
• Industrial fieldbus system isolation

Procurement Notes

Verify the specific suffix 'WTRWZ' against the manufacturer's current datasheet to confirm package type, tape-and-reel quantity, and automotive qualification status. Ensure the component matches the required lead-free and RoHS compliance standards for your assembly process. Cross-reference the ordering part number with official distributor catalogs to avoid confusion with similar variants like the WSRWZ or CRWZ series.

Selection Notes

Select this component when designing systems requiring robust galvanic isolation between low-voltage digital logic and higher potential domains. It is suitable for applications needing bidirectional or unidirectional data transfer across isolation barriers where space constraints preclude standard optocouplers. Consider its wide operating temperature range and high CMTI for industrial or automotive environments.

Part Context

This part belongs to the ADuM1401 family of quad-channel digital isolators from Analog Devices. These devices integrate high-speed CMOS logic with monolithic air-core transformer technology on a single silicon substrate. The family is designed to offer superior performance over conventional optocouplers, including lower power consumption, smaller footprint, and better channel-to-channel matching.

Replacement Considerations

Public confirmed substitute part numbers: ADUM1401CRWZ-RL, ADUM1401WSRWZ.