ADUM1280ARZ

Overview

The ADUM1280ARZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It provides 3000 Vrms isolation voltage with a data rate of 1 Mb/s and a common-mode transient immunity of 25 kV/µs. The device operates on a supply voltage range of 3.135 V to 5.5 V and features unidirectional signal transmission. Packaged in an 8-pin SOIC, it supports a wide operating temperature range from -40°C to +125°C.

Feature Summary

• Provides galvanic isolation via proprietary iCoupler magnetic coupling technology
• Features high common-mode transient immunity for reliable noise rejection
• Supports bidirectional or unidirectional data transmission across two isolated channels

Applications

• Industrial process control systems requiring signal isolation
• Medical equipment needing patient isolation barriers
• Power metering applications involving high-voltage sensing

Procurement Notes

Verify component authenticity through authorized distributors due to restricted availability status. Confirm RoHS compliance and package integrity upon receipt. Check for recent production change notices affecting specifications. Ensure storage conditions meet moisture sensitivity level requirements before soldering.

Selection Notes

Select this component when 3000 Vrms isolation is required for low-speed digital signals. Compare against the ADUM1201 series if higher data rates are needed. Consider the ADUM1285 variant for similar performance characteristics. Evaluate power consumption constraints relative to other iCoupler devices in the portfolio.

Part Context

This part belongs to the ADuM128x family of dual-channel digital isolators. It shares the SOIC-8 footprint with related models like the ADUM1285. The series utilizes silicon dioxide insulation layers integrated into standard CMOS processes for compact isolation solutions.

Replacement Considerations

The ADUM1285ARZ is a confirmed substitute within the same product family offering identical pinout and isolation ratings.