ADUM1286CRZ

Overview

The ADUM1286CRZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler technology for magnetic coupling isolation. It provides 3000 Vrms insulation voltage and supports data rates up to 100 Mb/s with unidirectional signal transmission. The device operates within a supply voltage range of 3.135 V to 5.5 V, consuming typical currents of 15 mA and 15.6 mA per channel. Key electrical parameters include a propagation delay of 23 ns, rise and fall times of 3 ns, and a common-mode transient immunity of 25 kV/µs. It functions reliably across an extended temperature range from -40°C to +125°C and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Implements iCoupler technology combining high-speed CMOS with monolithic air-core transformers for robust magnetic isolation.
• Provides dual-channel isolation with default low output configuration for flexible logic interfacing.
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments.

Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment signal conditioning circuits
• General-purpose isolated communication interfaces

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches project requirements, as packaging variations exist. Check current availability status, as supply constraints may affect lead times. Ensure compliance with RoHS directives and verify operating temperature ratings align with system thermal design specifications before finalizing procurement orders.

Selection Notes

Select this component when dual-channel isolation at 100 Mb/s is required within a compact SOIC-8 footprint. Consider the 3000 Vrms rating for safety-critical applications. Evaluate power consumption against system budget, noting the higher current draw compared to lower-speed variants. Ensure the unidirectional polarity suits the signal flow direction in the target circuit design.

Part Context

This part belongs to the ADUM128x series of dual-channel digital isolators. It shares the same physical package and basic isolation architecture with other members like the ADUM1281 and ADUM1285, differing primarily in data rate capabilities and specific timing characteristics. The CRZ suffix indicates a commercial grade variant packaged in tubes.

Replacement Considerations

Direct substitutes within the same family include ADUM1281WCRZ and ADUM1285BRZ-RL7, though these differ in maximum data rates (100 Mb/s and 25 Mb/s respectively). Verify that alternative part numbers meet the specific speed and current requirements of the application before substitution.