Design of a 10 Gbps VCSEL Current Driver in Active Feedback Technology
A design of 10 Gbps Vertical Cavity Surface Emitting Laser (VCSEL) driver using 0.18µm CMOS technology is presented in this paper. The core unit of the driver consists of pre-amplify stage and output stage circuit. Technique of three stages differential amplifier with low impedance load and active feedback are employed in pre-amplify stage, and technique of C3A is adopted in output stage to get low power consume and high speed. The simulation results show that the circuit can work at the speed rate of 10 Gbps and maximum of 13 Gbps with a 1.8V power supply. The output modulation current is up to 12.5mA and the power dissipation is 77mW. The chip size is 0.45mm 0.47mm.
J. F. Wang et al., "Design of a 10 Gbps VCSEL Current Driver in Active Feedback Technology", Advanced Materials Research, Vols. 588-589, pp. 868-871, 2012