ADUM3473WCRSZ

Overview

The ADUM3473WCRSZ is a four-channel digital isolator from Analog Devices, housed in an SSOP-20 surface-mount package. 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 isolation via magnetic coupling technology. It is qualified under the AEC-Q100 standard for automotive applications and functions reliably across an extended temperature range from -40°C to +105°C.

Feature Summary

• Integrates four independent bidirectional channels with internal transformer drivers for high-speed signal isolation
• Utilizes silicon dioxide and copper coil-based magnetic coupling for robust galvanic isolation
• Meets AEC-Q100 qualification standards suitable for demanding automotive electronic environments

Applications

• Automotive gateway systems requiring isolated communication between domains
• Industrial control networks needing reliable signal separation
• Power electronics interfaces for motor drives and inverters

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm that the specific suffix matches the reel packaging variant required for automated assembly processes. Ensure compliance with RoHS directives and check for any recent product change notifications affecting pinout or electrical characteristics before finalizing procurement orders.

Selection Notes

Select this part when bidirectional data flow is required across all four channels simultaneously. The integrated transformer driver simplifies design by eliminating external components typically needed for capacitive isolators. Consider the SSOP-20 footprint constraints and thermal management requirements associated with the specified operating temperature range during PCB layout planning.

Part Context

This component belongs to the ADUM347x family of high-performance digital isolators. It shares architectural similarities with unidirectional variants like the ADUM3472 but offers distinct bidirectional functionality. The WCRSZ suffix indicates a specific tape-and-reel packaging configuration optimized for high-volume manufacturing compared to tube-packaged alternatives.

Replacement Considerations

ADUM3473WARSZ serves as a direct functional equivalent differing primarily in tube packaging rather than electrical performance. Designers must verify that the alternative packaging format aligns with existing pick-and-place equipment capabilities without altering circuit board footprints or signal integrity parameters.