ADUM1286WBRZ

Overview

The ADUM1286WBRZ is a dual-channel digital isolator from Analog Devices, utilizing magnetic coupling technology to provide electrical isolation. It operates within a supply voltage range of 3.135 V to 5.5 V and supports data rates up to 25 Mb/s. The device features a propagation delay of 23 ns and offers an insulation voltage rating of 3000 Vrms. Designed for unidirectional signal transmission, it consumes typical supply currents of 4.7 mA and 4.9 mA per channel. The component is housed in an SOIC-8 package and is qualified under the AEC-Q100 standard for automotive applications.

Feature Summary

• Provides galvanic isolation between circuits using proprietary magnetic coupling technology.
• Supports high-speed digital communication with data rates reaching 25 Mb/s.
• Ensures reliable operation across extended industrial temperature ranges.
• Meets automotive quality standards through AEC-Q100 qualification.

Applications

• Automotive electronic control units requiring isolated communication interfaces
• Industrial automation systems needing robust signal isolation
• Medical equipment demanding high-voltage isolation safety

Procurement Notes

Verify the specific ordering suffix to confirm packaging format, as the WBRZ designation typically indicates tube packaging. Confirm that the unidirectional polarity matches the circuit design requirements. Ensure compatibility with the target operating voltage range of 3.135 V to 5.5 V. Check for AEC-Q100 certification if the application mandates automotive-grade reliability standards.

Selection Notes

Select this component when bidirectional isolation is not required, as it supports only unidirectional channels. Compare power consumption against other isolators if low standby current is critical, noting its 4.7 mA typical draw. Consider the SOIC-8 footprint constraints during PCB layout. Evaluate the 3000 Vrms isolation barrier against system safety requirements.

Part Context

This part belongs to the ADUM1286 series of small form-factor digital isolators. It shares the same core magnetic coupling architecture as other members but differs in channel count and directionality. The series is designed to replace traditional optocouplers in space-constrained designs while offering superior speed and consistency.

Replacement Considerations

The ADUM1286ARZ serves as a lower-speed alternative within the same family. Verify pinout compatibility before substitution. Note that the ARZ variant supports only 1 Mb/s data rates compared to the 25 Mb/s capability of the WBRZ version.