ADUM1286BRZ

Overview

The ADUM1286BRZ is a dual-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It provides 3000 Vrms isolation voltage with a common-mode transient immunity of 25 kV/µs. The device supports bidirectional data transmission at speeds up to 25 Mb/s. Operating on a single supply voltage between 3 V and 5.5 V, it draws a typical quiescent current of 15 mA per channel. Key timing parameters include a propagation delay of 35 ns and rise/fall times of 3 ns. It functions within an industrial temperature range of -40°C to +125°C and is housed in an 8-pin SOIC package.

Feature Summary

• Integrates two independent channels for bidirectional signal isolation using proprietary magnetic coupling architecture.
• Delivers high common-mode transient immunity to maintain signal integrity in electrically noisy environments.
• Features default low output state logic configuration for predictable system behavior upon power-up or fault conditions.

Applications

• Industrial communication interfaces requiring galvanic isolation
• Medical equipment signal conditioning circuits
• Power metering systems with isolated data acquisition

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm pinout compatibility and electrical characteristics. Confirm that the component meets required safety certifications for your target market. Check current availability status as distribution may be limited. Ensure the package type matches your PCB footprint requirements before ordering.

Selection Notes

Select this component when bidirectional data flow is required across an isolation barrier. Compare performance metrics such as propagation delay and power consumption against alternative isolators. Verify that the 3000 Vrms insulation rating satisfies the creepage and clearance requirements of your design standard. Consider the operating temperature range relative to your environmental constraints.

Part Context

This part belongs to the ADuM1286 series of dual-channel digital isolators. It represents a solution for replacing traditional optocouplers in applications demanding higher speed and better reliability. The series leverages silicon dioxide and copper coil technology to achieve compact form factors with robust isolation performance.

Replacement Considerations

Cross-reference with other ADuM128x variants for different data rates or polarity options. Verify pin-to-pin compatibility if substituting with competitors' devices. Ensure replacement parts meet the same isolation voltage and CMTI specifications.