ADN4651BRSZ

Overview

The ADN4651BRSZ is a dual-channel LVDS digital isolator utilizing iCoupler magnetic coupling technology. It supports data rates up to 600 Mbps with a maximum propagation delay of 4 ns and rise/fall times of 350 ps. The device offers 3750 Vrms isolation voltage and 25 kV/µs common-mode transient immunity. Operating on a single supply between 3 V and 3.6 V, it draws 58 mA and functions within a temperature range of -40°C to +125°C. Packaged in a 20-lead SSOP.

Feature Summary

• Integrates iCoupler magnetic coupling technology for high-speed signal isolation without external transformers.
• Provides fault-safe outputs that default to logic high when inputs are floating, shorted, or unterminated.
• Ensures low jitter performance suitable for precise timing applications in high-speed data links.

Applications

• Isolated analog front-end (AFE) circuits
• Data plane isolation in industrial systems
• Isolated high-speed clock and data links
• LVDS-based isolated SPI interfaces

Procurement Notes

Verify current availability status as distribution channels may indicate limited stock or discontinuation. Confirm the specific suffix matches the required package type. Ensure compatibility with existing board layouts for the 20-SSOP footprint. Review updated datasheets for any recent design changes or regulatory updates before finalizing procurement.

Selection Notes

Select this component for applications requiring bidirectional LVDS signal isolation with minimal propagation delay. Compare against other ADN465x variants if different isolation voltages or pinouts are needed. Verify that the 3.3 V supply requirement aligns with system power rails. Consider thermal dissipation limits given the operating current and package size.

Part Context

This part belongs to the ADN4651 series of LVDS digital isolators from Analog Devices. It is designed to replace bulky transformer-based solutions by integrating isolation barriers directly into the silicon. The series supports various configurations to meet diverse interface requirements while maintaining signal integrity at high speeds.

Replacement Considerations

Check for ADN4651BRWZ for SOIC packaging alternatives. Verify functional equivalence with other LVDS isolators if supply constraints exist. Ensure pinout compatibility before substituting with similar devices from other manufacturers.

FAQ

What is the isolation voltage rating?

The device provides 3750 Vrms isolation voltage.

Does the device have fault protection?

Yes, it includes a fault-safe mechanism that ensures a logic high output if inputs are floating or shorted.