ADN2526 - Analog Devices

ADN2526 11.3 Gbps Active Back-Termination Differential Laser Diode Driver

The ADN2526 laser diode driver is designed for direct modulation of packaged laser diodes that have a differential resistance ranging from 5 Ω to 50 Ω. 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 ou.

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 Ω to 50 Ω 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 transceiver.