AD261BND-1

Overview

The AD261BND-1 is a general-purpose digital isolator from Analog Devices, designed to isolate five digital control signals between a microcontroller and field I/O components. It utilizes magnetic coupling technology for robust signal transmission in demanding environments. The device operates on a supply voltage range of 4 V to 5.75 V and provides an isolation voltage of 3500Vrms. It features a high common-mode transient immunity (CMTI) of 10kV/µs, ensuring reliable performance in noisy industrial settings.

Feature Summary

• Isolates five digital control signals to/from a microcontroller and related field I/O components
• Utilizes IsoLogic™ magnetic coupling technology for robust signal transmission
• Provides high common-mode transient immunity for operation in demanding environments

Applications

• Microcontroller interface isolation
• Field I/O component signal isolation
• Industrial data bus isolation

Procurement Notes

Verify the specific suffix (e.g., -1 vs -5) as it may indicate different packaging or pin configurations. Confirm the lifecycle status, as some sources list this part as obsolete. Ensure compatibility with the required supply voltage range of 4 V to 5.75 V. Check for moisture sensitivity handling requirements if applicable. Validate that the 3500Vrms isolation rating meets your system's safety standards.

Selection Notes

Select this component when isolating multiple digital control lines is required between a controller and field devices. Consider the 3500Vrms isolation barrier for safety compliance. Evaluate the 10kV/µs CMTI for noise immunity in electrically noisy environments. Ensure the 4 V to 5.75 V supply voltage aligns with the system power architecture. Compare against newer ADUM series parts if current availability is a constraint.

Part Context

The AD261BND-1 belongs to the AD261 family of digital isolators from Analog Devices. This family is designed for general-purpose isolation applications requiring multiple channels. The BND package indicates a specific module form factor. Related parts include the AD261BND-5, which shares similar isolation characteristics but may differ in packaging or specific electrical parameters.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided source material. Users should consult Analog Devices documentation for direct replacements or cross-reference with the ADUM261 series, noting potential differences in channel count and specifications.