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GENERAL DESCRIPTION

The ADN2526 laser diode driver is designed for direct modulation of packaged laser diodes that have a differential resistance ranging from 5 ? to 50 ?. The active back-termination in the ADN2526 absorbs signal reflections from the TOSA end of the output transmission lines, enabling excellent optical eye quality to be achieved even when the TOSA end of the output transmission lines is significantly misterminated. ADN2526 is an SFP+ MSA-compliant device, and its small package and enhanced ESD protection provide the optimum solution for compact modules where laser diodes are packaged in low pin-count optical subassemblies.

FEATURES

3.3 V operation

Up to 11.3 Gbps operation

Typical 24 ps rise/fall times

Full back-termination of output transmission lines

Drives TOSAs with resistances ranging from 5 ? to 50 ?

Bias current range: 10 mA to 100 mA

Differential modulation current range: 10 mA to 80 mA

Voltage input control for bias and modulation currents

Data inputs sensitivity: 150 mV p-p diff

Automatic laser shutdown (ALS)

Cross point adjustment (CPA)

XFP-compliant bias current monitor

SFP+ MSA compliant

Optical evaluation board available

Compact 3 mm × 3 mm LFCSP

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