ADUM1281WCRZ

Overview

The ADUM1281WCRZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It provides 3000 Vrms isolation with a data rate of 100 Mb/s and unidirectional signal transmission. The device operates within a supply voltage range of 3.135 V to 5.5 V, drawing approximately 15 mA per channel. It features a propagation delay of 23 ns and meets AEC-Q100 automotive qualification standards. Designed for surface mount installation in an SOIC-8 package, it supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates high-speed CMOS logic with monolithic air-core transformer technology for robust signal isolation.
• Provides independent dual-channel configuration with tight channel-to-channel matching characteristics.
• Delivers high common-mode transient immunity to ensure reliable operation in electrically noisy environments.

Applications

• Automotive electronic control unit (ECU) interfaces
• Industrial process control systems
• Medical equipment signal isolation

Procurement Notes

Verify the specific suffix WCRZ against official Analog Devices documentation to confirm the exact package variant and automotive grade status. Ensure compatibility with required thermal management specifications for the intended application environment. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when dual-channel isolation with high speed and automotive reliability is required. The 100 Mb/s data rate suits applications needing faster communication than standard isolators offer. Consider the SOIC-8 footprint for space-constrained designs. Verify that the 3000 Vrms isolation rating aligns with system safety requirements and that the unidirectional nature fits the signal flow direction.

Part Context

This device belongs to the ADUM1281 series of iCoupler digital isolators. It represents a class of components designed to replace traditional optocouplers by offering superior performance in speed, power consumption, and size. The series is characterized by its use of magnetic coupling technology to provide galvanic isolation between circuits without using light-emitting diodes or phototransistors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.