Analog Devices Inc.

Category: Laser Modules and Components

The MAX3735A is a +3.3V laser driver for SFP/SFF applicationsfrom 155Mbps up to 2.7Gbps. The device acceptsdifferential input data and provides bias and modulationcurrents for driving a laser. DC-coupling to the laser allowsfor multirate applications and reduces the number of externalcomponents. The MAX3735A is fully compliant with theSFP MSA timing and the SFF-8472 transmit diagnosticrequirements.An automatic power-control (APC) feedback loop is incorporatedto maintain a constant average optical power overtemperature and lifetime. The wide modulation currentrange of 10mA to 60mA (up to 85mA AC-coupled) and biascurrent of 1mA to 100mA make this product ideal for drivingFP/DFB laser diodes in fiber-optic modules. The resistorrange for the laser current settings is optimized to interfacewith the DS1858 SFP controller IC.The MAX3735A provides transmit-disable control, asingle-point latched transmit-failure monitor output, photocurrentmonitoring, and bias-current monitoring to indicatewhen the APC loop is unable to maintain the averageoptical power.The MAX3735A is available in a 4mm x 4mm TQFN packageand operates over the extended temperature range of -40°C to +85°C.Applications1G/2G Fibre Channel SFF/SFP Optical Transceiver ModulesGigabit Ethernet SFF/SFP Transceiver ModulesMultirate OC-3 to OC-48 FEC SFF/SFP Transceiver Modules

$4.94