10Gb/s 2.2V输出CMOS激光驱动器

10Gb/s 2.2V Output CMOS Laser Driver

采用逆向递推设计法,利用TSMC 0.18μm CMOS工艺,设计实现了适用于超高速光纤通信系统的激光驱动器电路。核心电路为两级直接耦合差分放大器。电路设计中采用电感并联峰化技术拓展带宽和降低功耗。后仿真结果表明,在1.8V电源供电时,工作速率10Gb/s,输入单端峰峰值为400mV的差分信号,在50Ω的负载上可提供2.2V的输出电压。电路功耗185mW。版图面积为0.9mm×0.95 mm。

Using TSMC 0. 18μm CMOS Technology, a laser driver for high speed optical communication system is designed by the method of converse recursion. The core circuit is two stages of direct-coupled difference amplifier. Inductor peaking is employed to broaden bandwidth. The simulation result shows that the circuit can delive a voltage of 2. 2V to 50g） load at 10Gb/s, with a 1.8V supply voltage. The power dissipation of the circuit is 185mW. The aera of the layout is 0. 9mm×0. 95mm.