ADUM1280CRZ

Overview

The ADUM1280CRZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 3.135 V to 5.5 V and provides 3000 Vrms isolation voltage. The device supports data rates up to 100 Mb/s with a typical propagation delay of 23 ns. Power consumption is specified at 9.5 mA for the A-side and 20 mA for the B-side. It features rise and fall times of approximately 3 ns and is housed in an SOIC-8 package.

Feature Summary

• Dual-channel unidirectional signal isolation using magnetic coupling
• High common-mode transient immunity capability
• Low power consumption relative to high-speed operation
• Compact surface-mount packaging

Applications

• Industrial process control systems
• Power management circuits
• Medical equipment signal isolation
• General-purpose digital isolation interfaces

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm tape-and-reel configuration versus tube packaging. Ensure the component meets required RoHS compliance standards for your region. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and current availability status before procurement.

Selection Notes

Select this component when dual-channel isolation is required with moderate speed requirements up to 100 Mbps. Consider the SOIC-8 footprint for PCB layout constraints. Evaluate power budget needs against the specified quiescent currents for both channels. Confirm that the 3000 Vrms isolation rating satisfies the safety requirements of the application environment.

Part Context

This device belongs to the ADuM128x series of digital isolators. It shares the same physical package and basic isolation architecture as other variants in the family but differs in data rate specifications. The series utilizes proprietary iCoupler technology to provide robust signal transmission across isolation barriers without optical components.

Replacement Considerations

The ADUM1280ARZ serves as a similar variant within the same series, offering different packaging options. Verify compatibility regarding data rate requirements and pinout configurations before substitution. Consult official replacement guides to ensure equivalent electrical performance and isolation ratings.