ADUM1285CRZ

Overview

The ADUM1285CRZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler technology for magnetic coupling isolation. It provides 3000 Vrms insulation voltage and supports data rates up to 100 Mb/s. The device operates within a supply voltage range of 3.135 V to 5.5 V, with typical power consumption of 9.5 mA and 20 mA per channel. It features a propagation delay of 23 ns and pulse width distortion of 10 ns. Operating temperatures range from -40°C to +125°C. The component is housed in an 8-lead SOIC package.

Feature Summary

• Integrates two independent digital channels using monolithic air core transformer technology for high-speed signal transmission.
• Provides robust galvanic isolation with 3000 Vrms insulation rating and 25 kV/µs common-mode transient immunity.
• Supports default low output configuration to ensure safe state initialization upon power-up or fault conditions.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reinforced electrical isolation for safety compliance
• Power electronics monitoring circuits demanding high common-mode transient immunity

Procurement Notes

Verify the specific suffix 'CRZ' to confirm RoHS compliance and lead-free status as defined by Analog Devices. Ensure the SOIC-8 package dimensions match your PCB footprint requirements. Confirm that the 100 Mb/s data rate specification aligns with your system's timing constraints before finalizing procurement orders.

Selection Notes

Select this component when dual-channel isolation is required at speeds up to 100 Mb/s. Compare against lower-speed variants like the ADUM1281 if power consumption is critical, or higher-density options if more channels are needed. Verify that the 3000 Vrms isolation level meets the safety standards of your target application environment.

Part Context

This part belongs to the ADuM128x family of general-purpose digital isolators. It shares the same SOIC-8 package and basic isolation architecture with other members but differs in data rate specifications. The family utilizes CMOS technology combined with monolithic air core transformers to achieve reliable signal transmission across isolation barriers.

Replacement Considerations

Direct functional substitutes include the ADUM1281 series for lower speed applications or the ADUM1250 series for quad-channel needs. Verify pin compatibility and isolation voltage ratings when considering cross-family replacements to ensure system integrity.