ADN2526ACPZ-R2

Overview

The ADN2526ACPZ-R2 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, draws 46 mA typical operating current, and provides bias current ranging from 10 mA to 100 mA with differential modulation current from 10 mA to 80 mA. It includes automatic laser shutdown (ALS), cross-point adjustment, and an XFP-compliant bias current monitor.

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 resistance ranging from 5 Ω to 50 Ω
• Integrates automatic laser shutdown (ALS) and cross-point adjustment for enhanced operational control
• Includes an XFP-compliant bias current monitor for precise feedback

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 R2 against official Analog Devices documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure compatibility with existing SMD/SMT assembly processes for LFCSP-16 packages. Confirm moisture sensitivity level handling requirements during storage and reflow soldering procedures prior to implementation.

Selection Notes

Select this component when designing compact optical subassemblies requiring high-speed differential drive capabilities up to 11.3 Gbps. It is suitable for applications demanding active back-termination to mitigate transmission line reflections without external components. Consider its ESD protection levels and small form factor for space-constrained module designs compliant with SFP+ MSA standards.

Part Context

The ADN2526 belongs to Analog Devices' family of high-speed laser drivers optimized for short-reach optical communications. It complements other devices like the ADN2525 by offering similar functionality with updated speed ratings. The ACPZ-R2 designation indicates the specific lead-free, RoHS-compliant LFCSP package variant supplied in a reel format for automated surface-mount assembly.

Replacement Considerations

The ADN2525ACPZ-R2 is a documented alternative within the same product family, offering comparable active back-termination features.