AD261BND-5

Overview

The AD261BND-5 is a high-speed digital isolator featuring five unidirectional logic channels in a 22-pin PDIP package. It provides 3500 Vrms isolation voltage via magnetic coupling technology. The device operates on a single 5 V supply with a typical current consumption of 4 mA. It supports a minimum signal bandwidth of 20 MHz and offers a propagation delay of 14 ns. Common-mode transient immunity is rated at 10 kV/µs. The component functions within an operating temperature range of -25°C to +85°C.

Feature Summary

• Provides galvanic isolation for five digital control signals between microcontrollers and field I/O components
• Maintains waveform edge transmission symmetry within ±1 ns to accurately isolate time-based PWM signals
• Features independent enable pins to set all outputs to a high-resistance three-state level
• Replaces multiple discrete opto-isolators in a single integrated module

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 'BND-0' or 'BND-5' against official Analog Devices documentation, as these denote distinct pinout or configuration variants. Confirm RoHS compliance status directly from the manufacturer datasheet, as distributor listings may vary. Check for obsolescence notices, as this series has been superseded by newer ADUM products. Ensure the required isolation voltage rating meets system safety standards before procurement.

Selection Notes

Select this component when five isolated bidirectional or unidirectional channels are required for high-speed data transmission. The 20 MHz bandwidth suits applications needing fast response times and precise pulse width modulation isolation. Consider the 22-pin DIP package for through-hole mounting requirements. Evaluate the 3500 Vrms isolation barrier for systems requiring robust noise immunity between low-voltage logic and high-voltage field interfaces.

Part Context

The AD261 belongs to the Analog Devices AD26x family of high-speed logic isolators. This series utilizes proprietary magnetic coupling technology to replace traditional optocouplers. The AD261 specifically offers six available I/O configurations, allowing flexibility in channel directionality. It is designed to simplify circuit design by integrating multiple isolation barriers into a single compact package.

Replacement Considerations

The ADUM261N1BRIZ-RL is a related product offering similar isolation capabilities with different packaging and channel configurations.