Laser diode controller for 10 Gbps fiber-optic links
The MIC3002GML TR is a single-channel laser diode controller from Microchip Technology, designed for fiber-optic transceiver modules operating at 10 Gbps. The 10 Gbps data rate places it squarely in the SFP+ class — the controller handles the bias and modulation current loop for a 10G optical engine, not a 1G or 25G link. Supply voltage range is 3 V to 3.6 V, which maps to the standard 3.3 V rail in an SFP+ module. The controller draws 2.3 mA supply current, and the bias current output sinks down to 1 µA — enough headroom for a cooled or uncooled DFB laser at the low end of its threshold.
Temperature grade and supply rails
Operating temperature range is -45°C to 105°C (junction). The part is listed as a Laser Diode Controller (Fiber Optic) in the Discrete Semiconductors category. It is a single-channel device — one laser per package — so a dual-lane 2x10G module needs two controllers.
Active production — sourcing reality
Microchip lists the MIC3002GML TR as Active.