ADUM1281WBRZ

Overview

The ADUM1281WBRZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It features two independent isolation channels with unidirectional signal transmission. The device supports data rates up to 100 Mb/s and provides an insulation voltage of 3000 Vrms. It operates within a supply voltage range of 3.135 V to 5.5 V. Key electrical parameters include a propagation delay of 23 ns and a working supply current of approximately 15 mA per channel. The component is qualified under AEC-Q100 standards for automotive applications and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates high-speed CMOS logic with monolithic air-core transformer technology for robust magnetic isolation.
• Provides tight channel-to-channel matching to minimize skew in multi-channel communication systems.
• Offers superior performance compared to traditional optocouplers with extended operational lifetime.
• Supports voltage translation capabilities between isolated domains without requiring additional components.

Applications

• Automotive infotainment and gateway systems
• Industrial process control instrumentation
• Medical equipment signal isolation
• General-purpose digital isolation interfaces

Procurement Notes

Verify the specific suffix 'W' indicates wide body packaging and 'B' denotes the commercial grade variant when sourcing. Confirm AEC-Q100 qualification status if automotive reliability is required. Check moisture sensitivity levels and reflow soldering profiles against IPC/JEDEC standards. Ensure the supplier provides valid RoHS compliance documentation. Validate that the package type matches the PCB footprint requirements for SOIC-8 wide body.

Selection Notes

Select this component for designs requiring bidirectional data transfer across two isolated channels with moderate speed requirements. Consider the 3000 Vrms isolation barrier for safety-critical applications. Evaluate the 100 Mb/s data rate against system timing constraints. Compare power consumption against other isolators if energy efficiency is a primary design driver. Ensure the operating temperature range meets the environmental conditions of the target application.

Part Context

This part belongs to the ADUM1281 series of dual-channel digital isolators. It is part of Analog Devices' iCoupler product family, which replaces optical isolation with silicon-based magnetic coupling. The series offers various speed and isolation voltage options to suit different interface needs. The WBRZ suffix specifies the package style and temperature grade within this lineup.

Replacement Considerations

ADUM1281BRZ

FAQ

What is the maximum data rate supported by the ADUM1281WBRZ?

The device supports data rates up to 100 Mb/s.

Is the ADUM1281WBRZ suitable for automotive applications?

Yes, it is qualified under the AEC-Q100 standard for automotive use.

Does the device support voltage translation between channels?

Yes, the independent channels allow for voltage translation between isolated domains.