ADUM2281CRIZ

Overview

The ADUM2281CRIZ-RL is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 2.7 V to 5.5 V and supports bidirectional data transmission at speeds up to 100 Mb/s. Key electrical parameters include a propagation delay of 24 ns, rise/fall times of 3 ns, and an insulation voltage of 5000 Vrms. The device functions across an extended temperature range of -40°C to +125°C with a typical quiescent current of 800 µA per channel. It is housed in a compact SOIC-16 package.

Feature Summary

• Integrates two independent bidirectional channels for signal isolation using proprietary magnetic coupling technology.
• Provides high common-mode transient immunity to protect against noise in electrically noisy environments.
• Features low power consumption suitable for battery-operated or energy-efficient applications.
• Supports wide operating voltage ranges compatible with various logic families.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing galvanic isolation for safety compliance
• Power electronics control circuits involving high-voltage switching

Procurement Notes

Verify the specific suffix (e.g., CRIZ vs ARIZ) as it indicates temperature grade variations. Confirm availability status as some variants may be limited. Ensure the reel packaging matches production requirements. Cross-reference datasheet revisions for any recent parameter updates before finalizing procurement orders.

Selection Notes

Select this component when bidirectional data flow is required between isolated domains. Compare propagation delay and power consumption against other iCoupler variants like the ADUM2280 if lower speed suffices. Consider the SOIC-16 footprint constraints during PCB layout. Verify thermal performance within the specified operating temperature range for the target application environment.

Part Context

This part belongs to the ADUM228x series of small, dual-channel digital isolators. It shares the SOIC-16 package form factor with related models but differs in channel directionality and speed specifications compared to unidirectional counterparts like the ADUM2280.

Replacement Considerations

The ADUM2281ARIZ-RL serves as a commercial-grade alternative with similar functionality but potentially different temperature ratings. Verify pinout compatibility and electrical characteristics before substitution.