ADN2531ACPZ-R2

Overview

The ADN2531ACPZ-R2 is a differential laser diode driver designed for high-speed optical transmission applications. It supports data rates up to 11.3 Gbps and operates on a single 3.3 V supply. The device features active back-termination to absorb signal reflections, ensuring excellent optical eye quality despite transmission line mismatches. Key electrical parameters include a bias current range of 10 mA to 100 mA and a differential modulation current range of 10 mA to 80 mA. Typical rise and fall times are 26 ps. It accepts 150 mV p-p differential voltage inputs and includes automatic laser shutdown functionality.

Feature Summary

• Active back-termination absorbs signal reflections from the laser diode side, maintaining optical eye quality under mismatched conditions.
• Supports directly modulated lasers including VCSEL, Fabry-Perot, and DFB types with adjustable bias and modulation currents.
• Integrated automatic laser shutdown (ALS) and crosspoint adjustment (CPA) for enhanced safety and signal integrity.
• Compliant with SFF/SFP/XFP/SFP+ MSA standards, suitable for compact optical module designs.

Applications

• Optical transmitters for SONET/SDH, Ethernet, and Fibre Channel up to 11.3 Gbps
• SFF/SFP/SFP+/XFP/X2/XENPAK/XPAK MSA compliant modules
• 300-pin optical modules operating at speeds up to 11.3 Gbps

Procurement Notes

Verify the specific suffix R2 indicates reel packaging when sourcing. Confirm the LFCSP package dimensions match your PCB footprint requirements. Ensure compatibility with the target laser diode's impedance range of 5 Ω to 140 Ω. Check for moisture sensitivity handling instructions during assembly. Validate that the 3.3 V supply voltage aligns with your system design constraints.

Selection Notes

Select this component for applications requiring high-speed differential driving with built-in reflection management. It is suitable for designs needing support for various laser types like VCSEL and DFB within a compact form factor. Consider its compliance with major optical transceiver standards if designing for interoperability. Evaluate the need for automatic laser shutdown features for safety-critical implementations.

Part Context

This part belongs to Analog Devices' family of high-speed laser drivers optimized for optical communications. It addresses the challenge of signal integrity in compact optical subassemblies by integrating active back-termination. The device enables designers to achieve high data rates without complex external termination networks, simplifying the layout for SFP+ and similar form-factor modules.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully if considering alternative drivers from other manufacturers or different ADI series.