ADN2526XCPZ

Overview

The ADN2526XCPZ is a differential laser diode driver designed for direct modulation of packaged laser diodes with differential resistances between 5 Ω and 50 Ω. Operating at data rates up to 11.3 Gbps, it features active back-termination to absorb signal reflections from the TOSA end, ensuring excellent optical eye quality even with significantly misterminated transmission lines. The device operates on a single 3.3 V supply and includes automatic laser shutdown (ALS) and cross-point adjustment (CPA). It supports bias currents from 10 mA to 100 mA and differential modulation currents from 10 mA to 80 mA.

Feature Summary

• Active back-termination absorbs signal reflections from the TOSA end to maintain optical eye quality under mistermination conditions
• Supports direct modulation of laser diodes with differential resistances ranging from 5 Ω to 50 Ω
• Integrates automatic laser shutdown (ALS) and cross-point adjustment (CPA) for enhanced operational control

Applications

• SONET OC-192 and SDH STM-64 optical transceivers
• 10 Gb Fibre Channel transceivers
• 10 Gb Ethernet optical transceivers
• SFP+/XFP/X2/XENPAK/XPAK/MSA 300 optical modules

Procurement Notes

Verify the specific suffix 'X' against official Analog Devices documentation, as standard listings typically reference the ADN2526ACPZ variant. Confirm package type and electrical parameters match design requirements. Check current availability status directly with the manufacturer or authorized distributors, as supply constraints may apply to this component series.

Selection Notes

Select this driver for compact module designs requiring SFP+ MSA compliance and enhanced ESD protection. It is suitable for applications demanding high-speed operation up to 11.3 Gbps with minimal external components. Ensure the target laser diode impedance falls within the supported 5 Ω to 50 Ω range for optimal performance.

Part Context

The ADN2526 belongs to Analog Devices' portfolio of high-speed laser drivers optimized for optical communication systems. It addresses the need for compact solutions in low pin-count optical subassemblies. The device complements other high-performance signal processing components used in dense wavelength division multiplexing (DWDM) and short-reach optical networking applications.

Replacement Considerations

The ADN2525 serves as a compatible alternative within the same family, offering similar active back-termination functionality. Verify interface compatibility and parameter alignment before substitution.