AD260AND-1

Overview

The AD260AND-1 is a high-speed digital isolator utilizing IsoLogic circuit architecture to isolate five digital control signals between a microcontroller and field I/O. It features a built-in isolated power transformer providing up to 1.5 W at 37 V p-p for a 3.5 kV isolated DC-DC supply. The device supports unidirectional logic with a minimum bandwidth of 20 MHz and 40 Mbps NRZ data rate. It offers 3500 Vrms isolation test voltage and 10 kV/ms common-mode transient immunity. Operating from a single 5 V supply, it draws 4 mA current and functions within a temperature range of -25°C to +85°C in a 22-pin PDIP package.

Feature Summary

• Integrates IsoLogic circuit architecture for five isolated logic lines and an internal power transformer
• Provides high common-mode transient immunity of 10 kV/ms minimum
• Supports waveform edge transmission symmetry of 61 ns for precise timing
• Includes field and system output enable/three-state functions

Applications

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

Procurement Notes

Verify component authenticity through authorized channels as the AD260 series may have limited availability or end-of-life status depending on region. Confirm RoHS compliance status prior to procurement, as historical records indicate non-compliant variants exist. Ensure the specific suffix matches required isolation voltage and pin configuration. Check for pending certifications such as UL1950 and IEC950 if regulatory approval is critical for the target application environment.

Selection Notes

Select this component when replacing multiple discrete opto-isolators to reduce board space and improve signal integrity. The integrated power transformer eliminates external isolation components for the secondary side. Choose this model for applications requiring high CMTI and symmetric edge transmission. Ensure the 5 V single-supply operation aligns with system power rails. Consider the 22-pin DIP package constraints for PCB layout and thermal management requirements.

Part Context

The AD260 belongs to Analog Devices' IsoLogic family, designed to replace traditional optocouplers. It combines logic isolation with power isolation in a single package. The series includes various I/O configurations to support different microcontroller-to-field interface needs. This specific part provides five input/output lines with integrated power conversion capabilities.

Replacement Considerations

Direct substitutes include AD260AND-0, AD260AND-2, and AD260AND-3, which share the same package and core architecture but differ in I/O directionality. Cross-reference pinouts carefully as input/output configurations vary across the series.