ADUM3471CRSZ

Overview

The ADUM3471CRSZ is a quad-channel digital isolator from Analog Devices, featuring an integrated PWM controller and transformer driver for isolated DC-to-DC converters. It utilizes iCoupler magnetic coupling technology to provide electrical isolation with a rated insulation voltage of 2500 Vrms. The device supports data rates up to 25 Mbps and offers a common-mode transient immunity of 25 kV/µs. It operates within a supply voltage range of 3 V to 5.5 V and functions across an industrial temperature range of -40°C to +105°C. Packaged in a 20-lead SSOP, it ensures bidirectional signal transmission with low propagation delay.

Feature Summary

• Integrates a pulse-width modulation controller and transformer driver alongside four independent digital isolator channels.
• Employs iCoupler magnetic coupling technology to achieve high-voltage isolation without external magnetics.
• Provides robust signal integrity through high common-mode transient immunity capabilities.
• Supports bidirectional data communication across the isolation barrier.

Applications

• Isolated DC-to-DC converter control circuits
• Industrial automation systems requiring galvanic isolation
• Power supply management units with feedback loops

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and orientation. Ensure compatibility with your PCB footprint design, as the SSOP-20 package dimensions are critical for assembly. Confirm that the component meets all required environmental certifications for your target market before finalizing procurement decisions.

Selection Notes

Select this component when an integrated solution combining isolation and power stage driving is required. It is suitable for designs needing high-speed data transfer across isolation barriers while managing transformer drive signals. Consider the thermal performance and board space constraints associated with the SSOP-20 package during the initial schematic capture phase.

Part Context

This part belongs to the ADuM347x family of digital isolators, which are designed to replace traditional optocouplers and transformers in various applications. The series leverages silicon dioxide-based isolation technology to offer superior reliability and consistency compared to legacy components. It serves as a key interface element in modern power electronics and industrial communication networks.

Replacement Considerations

Direct replacements include other members of the ADuM347x family, such as the ADUM3470 or ADUM3472, depending on channel configuration requirements. Verify pinout compatibility and functional equivalence before substitution. Consult the manufacturer's cross-reference guide for approved alternatives that maintain system performance specifications.