ADUM3474WCRSZ

Overview

The ADUM3474WCRSZ is a four-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 25 Mb/s. The device provides an isolation voltage of 2500 Vrms with a common-mode transient immunity of 25 kV/µs. Propagation delay is specified at 60 ns for bidirectional channels. It functions across an extended temperature range from -40°C to +105°C and is housed in a 20-SSOP package.

Feature Summary

• Integrates four independent bidirectional communication channels with integrated transformer drivers for high-speed signal transmission.
• Employs on-chip microtransformer technology to provide robust galvanic isolation without requiring external magnetic components.
• Features high common-mode transient immunity to maintain signal integrity in electrically noisy industrial environments.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing safe patient isolation barriers
• Power management circuits with isolated feedback control loops

Procurement Notes

Verify the specific suffix 'W' indicates automotive qualification (AEC-Q100) as per official documentation. Confirm the 'C' grade corresponds to the standard commercial temperature range specifications. Ensure the SSOP-20 package dimensions match your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when bidirectional isolation is required for four separate channels. Compare against unidirectional variants if directionality constraints exist. Consider the AEC-Q100 qualification if the application demands automotive reliability standards over standard industrial grades.

Part Context

This part belongs to the ADUM347x family of iCoupler digital isolators. It shares architectural similarities with the ADUM3471, ADUM3472, and ADUM3473 series, differing primarily in channel directionality and specific qualification grades. The W suffix typically denotes automotive-grade reliability within this product line.

Replacement Considerations

ADUM3474ARSZ serves as a non-automotive equivalent within the same functional family. ADUM3471WCRSZ offers identical specifications but with unidirectional channel configurations instead of bidirectional ones.