ADUM2285CRIZ-RL

Overview

The ADUM2285CRIZ-RL is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 2.7 V to 5.5 V and supports data rates up to 100 Mb/s. The device features unidirectional signal transmission with default low output polarity. Key electrical specifications include a maximum propagation delay of 24 ns, typical rise and fall times of 3 ns, and a minimum common-mode transient immunity of 25 kV/µs. It provides 5000 Vrms isolation voltage and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates two independent digital channels using proprietary iCoupler magnetic coupling technology for high-speed signal isolation.
• Provides robust protection against common-mode transients with a specified immunity rating of 25 kV/µs.
• Features unidirectional signal paths with default low output logic levels for simplified interface design.
• Operates over an extended industrial temperature range to ensure reliability in demanding environments.

Applications

• Isolating communication interfaces such as RS-485 and CAN bus systems
• Protecting gate drive circuits in power electronics applications
• Creating isolated barriers in industrial automation control loops

Procurement Notes

Verify the specific suffix RL indicates reel packaging when sourcing components. Confirm that the CRIZ designation corresponds to the commercial temperature grade and SOIC-16 package variant required for your PCB layout. Ensure compatibility with the 2.7 V to 5.5 V supply rails during system integration planning.

Selection Notes

Select this component when bidirectional isolation is not required, as it supports only unidirectional channels. Compare performance metrics against the ADUM2280 series if bidirectional functionality is necessary. Consider the 100 Mb/s data rate limit when evaluating higher-speed interface requirements. Verify that the 5000 Vrms isolation rating meets the safety standards applicable to your target application domain.

Part Context

This part belongs to the ADuM228x family of dual-channel digital isolators manufactured by Analog Devices. These devices are designed to replace traditional optocouplers, offering superior performance in terms of speed, power consumption, and size. The family utilizes silicon dioxide insulation layers integrated with on-chip coils to transmit signals magnetically across the isolation barrier.

Replacement Considerations

The ADUM2285ARIZ-RL serves as a direct replacement for the CRIZ variant, differing primarily in the extended industrial temperature range specification. Both parts share identical pinouts and electrical characteristics regarding data rate and isolation voltage.