ADUM3474WCRSZ-RL7

Overview

The ADUM3474WCRSZ-RL7 is a four-channel digital isolator from Analog Devices, featuring an integrated transformer driver for magnetic coupling isolation. It operates within a supply voltage range of 3 V to 5.5 V and supports bidirectional data transmission at speeds up to 25 Mb/s per channel. The device provides 2500 Vrms insulation strength and is qualified under the AEC-Q100 automotive standard. It functions reliably across an extended temperature range from -40°C to +105°C and is housed in a compact SSOP-20 surface-mount package.

Feature Summary

• Integrates internal transformer drivers to facilitate robust magnetic coupling isolation between circuit domains.
• Provides bidirectional signal transmission capability across all four independent channels.
• Meets AEC-Q100 qualification standards for automotive electronic applications.

Applications

• Automotive electronics systems requiring certified isolation components
• Industrial control interfaces needing high-reliability signal separation
• Medical equipment demanding safe galvanic isolation

Procurement Notes

Verify that the specific suffix WCRSZ corresponds to the required automotive grade (AEC-Q100) and commercial temperature rating (-40°C to +105°C). Confirm the SSOP-20 package dimensions match your PCB footprint constraints. Ensure the reel packaging format aligns with your automated assembly equipment specifications before finalizing procurement orders.

Selection Notes

Select this component when automotive reliability certification is mandatory alongside high-density integration. The four-channel configuration reduces board space compared to single-channel alternatives. Verify that the 25 Mb/s data rate satisfies your system's timing requirements and that the 2500 Vrms isolation barrier meets safety regulatory standards for your specific application environment.

Part Context

This part belongs to the ADUM3474 series of quad-channel digital isolators. It shares architectural similarities with other variants like the ADUM3474ARSZ but differs in qualification status and temperature range. The 'W' indicates wide temperature operation, while 'C' denotes automotive qualification, distinguishing it from standard industrial versions within the broader interface IC family.

Replacement Considerations

Direct substitutes include ADUM3474ARSZ-RL7 for non-automotive use or ADUM3470WCRSZ-RL7 if lower channel count suffices. Cross-reference pinouts and electrical parameters carefully to ensure compatibility without redesigning the isolation barrier layout.