ADUM3473WARSZ-RL7

Overview

The ADUM3473WARSZ-RL7 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. The device provides 2500 Vrms isolation via magnetic coupling technology. It is qualified under AEC-Q100 standards 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 robust signal isolation.
• Features magnetic coupling technology to achieve high insulation voltage without optical components.
• Complies with AEC-Q100 qualification requirements suitable for demanding automotive environments.

Applications

• Automotive gate driver interfaces
• Industrial communication bus isolation
• Power converter control circuits

Procurement Notes

Verify the specific suffix 'W' against official documentation to confirm any distinct functional or environmental specifications compared to standard variants. Ensure compatibility with the SSOP-20 footprint during PCB layout. Confirm that the reel packaging aligns with automated assembly requirements. Cross-reference the AEC-Q100 status if automotive reliability certification is mandatory for the final product design.

Selection Notes

Select this component when bidirectional data flow is required across all four isolated channels. The integrated transformer driver simplifies design by eliminating external components typically needed for capacitive isolators. Consider the 25 Mb/s speed limit and 60 ns propagation delay for timing-sensitive applications. The wide operating temperature range makes it suitable for harsh industrial or automotive settings where thermal stability is critical.

Part Context

This part belongs to the ADUM347x family of digital isolators, which utilize iCoupler technology. The series includes variants with different channel counts and directional configurations. The ADUM3473 specifically addresses applications requiring symmetric bidirectional isolation. It serves as a replacement for traditional optocouplers in systems needing higher reliability and smaller form factors.

Replacement Considerations

Check datasheets for ADUM3473ARSZ or ADUM3473CRSZ for alternative packaging options such as tubes or cut tape. Verify pinout compatibility before substituting with other members of the ADUM347x family to ensure seamless integration into existing designs.