ADN2531ACPZ-WP

Overview

The ADN2531ACPZ-WP is a high-speed differential laser diode driver manufactured by Analog Devices Inc. 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 even with 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 includes automatic laser shutdown (ALS) and crosspoint adjustment capabilities.

Feature Summary

• Active back-termination absorbs signal reflections from the laser diode side for improved signal integrity
• Supports directly modulated lasers including VCSEL, Fabry-Perot, and DFB types
• Integrated automatic laser shutdown (ALS) and crosspoint adjustment functions

Applications

• Optical transmitters for SONET/SDH applications
• Ethernet optical modules
• Fibre Channel optical modules

Procurement Notes

Verify the specific suffix 'WP' against official Analog Devices documentation to confirm it denotes a qualified or enhanced version rather than a standard commercial grade. Ensure compatibility with SFF/SFP/XFP/SFP+ MSA standards if used in compliant modules. Confirm package dimensions match the required 3 mm x 3 mm LFCSP footprint during integration.

Selection Notes

Select this component for compact optical subassemblies requiring high-speed differential driving with minimal external components. The active back-termination feature simplifies design when output transmission lines may be significantly mismatched. Verify that the required modulation current range fits within the 10 mA to 80 mA specification for the target laser diode.

Part Context

This part belongs to the ADN2531 series of laser drivers designed for short-reach optical communications. It is optimized for use in small form-factor pluggable modules where space is limited. The device integrates necessary control functions to reduce board area and simplify the overall transmitter design compared to discrete solutions.

Replacement Considerations

Check official Analog Devices substitution lists for direct replacements. Generic equivalents may not support the specific active back-termination or MSA compliance required for SFP+ applications.