ADUM6421ABRNZ3

Overview

The ADuM6421ABRNZ3 is a quad-channel digital isolator featuring an integrated isoPower isolated DC-to-DC converter. It provides galvanic isolation with a 5000 Vrms insulation voltage and supports data rates up to 100 Mb/s. The device operates on a 3:1 channel configuration (three inputs, one output) at 3.3V. Key electrical parameters include a maximum power supply voltage of 3.6V, minimum of 3V, and typical operating current of 190 mA. Propagation delay is 10 ns with pulse width distortion of 1 ns. It functions within a temperature range of -40°C to +125°C in a 28-pin SOIC package.

Feature Summary

• Integrates an isolated DC-to-DC converter for simplified power delivery across the isolation barrier
• Provides high common-mode transient immunity for reliable signal transmission in noisy environments
• Supports low electromagnetic interference operation suitable for sensitive applications

Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing galvanic separation for safety compliance
• Automotive electronics utilizing magnetic coupling for data integrity

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm lot traceability and RoHS compliance status prior to acquisition. Note that availability may be restricted due to limited supply conditions. Ensure storage and handling procedures meet moisture sensitivity level requirements for the SOIC-28 package to prevent damage during assembly.

Selection Notes

Select this component when a quad-channel isolator with integrated power conversion is required. The 3:1 data directionality suits applications where multiple signals must cross the isolation barrier in one direction. Consider the 5000 Vrms rating for high-voltage isolation needs. Evaluate the 100 Mb/s speed against system timing requirements. Compare thermal performance and current consumption against alternatives if power efficiency is critical.

Part Context

This part belongs to the ADuM642xA family of quad-channel digital isolators from Analog Devices. The series includes variants with different channel configurations (4:0, 3:1, 2:2, 1:3, 0:4). All members share the isoPower technology, combining isolation and power management in a single package to reduce board space and design complexity compared to discrete solutions.

Replacement Considerations

Direct substitutes within the same family include ADUM6420A, ADUM6422A, ADUM6423A, and ADUM6424A, which offer different input/output channel ratios while maintaining similar electrical characteristics and packaging.