AD261AND-0

Overview

The AD261AND-0 is a high-speed logic isolator designed to isolate five digital control signals between a microcontroller and field I/O components. It features a minimum signal bandwidth of 20 MHz and a propagation delay of 14 ns. The device operates on a supply voltage range of 4 V to 5.75 V, with an output current capability of 4 mA. It provides isolation test voltages up to 3.5 kV rms and offers a common-mode transient immunity of 10 kV/µs min. The component supports tri-state outputs for multiplexing and includes enable functions.

Feature Summary

• Provides electrical isolation for five independent digital logic lines
• Maintains waveform edge transmission symmetry within ±1 ns of the input
• Supports field and system output enable/three-state functions via dedicated pins
• Offers high common-mode transient immunity for noise-resistant operation

Applications

• PLC and DCS analog input/output cards
• IGBT motor drive controls
• High-speed digital I/O ports
• Communications bus isolation

Procurement Notes

Verify the specific suffix 'AND-0' against official Analog Devices documentation to confirm pinout and configuration compatibility. Ensure the operating environment remains within the specified temperature range of -25°C to +85°C. Confirm that the required isolation voltage does not exceed the 3.5 kV rms rating. Check for updated revision levels or alternative packages if availability is constrained.

Selection Notes

Select this component when replacing multiple opto-isolators to reduce board space and improve speed. It is suitable for applications requiring precise time-based PWM signal isolation due to its low propagation delay and symmetry. Consider the 20 MHz bandwidth limit for data rate requirements. Verify that the 4 V to 5.75 V supply range matches the system power architecture.

Part Context

The AD261 series consists of six models offering various input/output configurations for five isolated channels. The AD261AND-0 specifically denotes a particular I/O arrangement within this family. This series effectively replaces discrete opto-isolator solutions, providing higher speed and better reliability in industrial automation and data acquisition systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.