ADUM2285ARIZ

Overview

The ADUM2285ARIZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It provides 5000Vrms isolation voltage with a common-mode transient immunity of 25kV/µs. The device supports data rates up to 100Mb/s and operates on a single supply voltage ranging from 2.7V to 5.5V. Key electrical parameters include a maximum propagation delay of 24ns, typical rise and fall times of 3ns, and a pulse width distortion of less than 1000ns. It functions in bidirectional mode with default low output logic and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Utilizes proprietary iCoupler magnetic coupling technology for robust signal transmission across isolation barriers without external magnetics.
• Provides high common-mode transient immunity of 25kV/µs to maintain signal integrity in electrically noisy environments.
• Supports bidirectional data communication with configurable default low output states for flexible system integration.

Applications

• Industrial automation systems requiring galvanic isolation between control and power stages
• Medical equipment needing certified isolation for patient safety and signal accuracy
• Power electronics interfaces such as motor drives and inverters

Procurement Notes

Verify the specific suffix 'ARIZ' to confirm the tape-and-reel packaging configuration and industrial temperature grade. Ensure compatibility with the target PCB footprint, specifically the 16-SOIC package dimensions. Confirm that the required data rate does not exceed the 100Mb/s specification. Check for moisture sensitivity level (MSL) requirements during storage and handling to prevent package damage before reflow soldering.

Selection Notes

Select this component when bidirectional communication is required alongside high isolation voltage ratings. Compare against the ADUM2281 variant if unidirectional channels are sufficient, as pinouts may differ. Consider the 100Mb/s speed limit; higher speeds require alternative models in the ADuM series. Evaluate power consumption at the target operating frequency to ensure it fits within the system's thermal budget.

Part Context

This part belongs to the ADUM228x family of dual-channel digital isolators. It shares the same core iCoupler architecture but differs in channel directionality and output defaults compared to siblings like the ADUM2281. The family is designed for applications demanding reliable isolation in harsh industrial and medical environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility and electrical specifications before considering any cross-reference components.