AD261AND-4

Overview

The AD261AND-4 is a general-purpose digital isolator manufactured by Analog Devices Inc. It features five channels of isolation with unidirectional signal transmission capability. The device utilizes magnetic coupling technology to achieve an insulation voltage rating of 1750 Vrms and a common mode transient immunity of 10 kV/µs. It operates within a supply voltage range of 1.7 V to 5.5 V, drawing a typical operating current of 17.3 mA. The component supports data rates up to 150 Mb/s with a propagation delay of 7.2 ns. It is housed in a 22-DIP module package and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Provides robust isolation for digital control signals between microcontrollers and field I/O components
• Utilizes magnetic coupling technology for high-speed signal transmission
• Offers high common mode transient immunity to maintain signal integrity in noisy environments

Applications

• Isolating digital control signals in industrial automation systems
• Connecting microcontrollers to field input/output components in harsh electrical environments
• General purpose digital isolation in embedded control architectures

Procurement Notes

Verify the specific suffix (AND-4) against official Analog Devices documentation to confirm pinout and package configuration. Ensure compatibility with system voltage requirements and thermal management needs. Confirm availability status as distribution channels may report limited stock or restricted supply conditions. Validate that the 22-DIP module form factor fits the target PCB layout constraints.

Selection Notes

Select this component when five isolated channels are required for bidirectional or unidirectional control signals. Consider the 1750 Vrms isolation rating for safety compliance in low-to-medium voltage applications. Evaluate the 10 kV/µs CMTI specification for suitability in high-noise industrial settings. Compare power consumption and package size against alternative isolators if space or energy efficiency is critical.

Part Context

The AD261 series is designed specifically for isolating digital control signals in microcontroller-based systems. The AND-4 variant denotes a specific package and configuration within this family. Analog Devices integrates magnetic coupling technology to provide reliable isolation without optical degradation over time. This series targets applications requiring robust signal integrity between isolated domains.

FAQ

What is the isolation voltage rating of the AD261AND-4?

The AD261AND-4 has an insulation voltage rating of 1750 Vrms.

How many channels does the AD261AND-4 support?

The device provides five channels of digital isolation.

What type of isolation technology is used in the AD261AND-4?

It uses magnetic coupling technology for signal transmission across the isolation barrier.