ADUM1281CRZ-RL7

Overview

The ADUM1281CRZ-RL7 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 100 Mb/s and common-mode transient immunity of 25 kV/µs. The device operates on a single supply voltage ranging from 3.135 V to 5.5 V, drawing approximately 15 mA per channel. It features a propagation delay of 23 ns and rise/fall times of 3 ns. Packaged in an 8-SOIC surface-mount format, it supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Dual-channel unidirectional signal isolation using proprietary iCoupler magnetic coupling technology
• High common-mode transient immunity rated at 25 kV/µs for robust noise rejection
• Integrated logic functionality eliminating the need for external components or matching delays

Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment needing reinforced insulation barriers
• Power management circuits with isolated communication interfaces

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm RoHS compliance status via official datasheets. Check current availability as supply may be limited. Ensure storage conditions meet moisture sensitivity level requirements before reflow soldering.

Selection Notes

Select this component when high-speed bidirectional isolation is not required due to its unidirectional nature. Consider the 3000 Vrms isolation rating against system safety standards. Evaluate power consumption relative to thermal constraints in enclosed environments. Verify package compatibility with existing PCB footprints.

Part Context

This part belongs to the ADUM1281 series of small form-factor digital isolators. It shares the iCoupler architecture with other members like the ADUM1200 but offers higher data rates. The suffix RL7 indicates reel packaging for automated assembly processes.

Replacement Considerations

Direct substitutes include ADUM1200CRZ-RL7 for lower speed applications. Cross-reference pinouts and isolation ratings carefully. Verify electrical characteristics match specific design requirements before substitution.