10Gb/s 0.18μmCMOS光接收机前置放大器

0.18 μm CMOS Preamplifier for 10Gb/s Optical Receiver

采用TSMC0.18μmCMOS工艺,设计应用于SDH系统STM-64速率级(10Gbit/s)光接收机前置放大器。该前置放大器采用具有低输入阻抗、宽带宽特点的RGC形式的跨阻放大器实现,同时在电路中引入有源电感实现并联峰化技术以拓展前置放大器的带宽。整个电路采用1.8V单电压源供电。仿真结果表明:中频互阻增益为59.2dBΩ,-3dB带宽为9.08GHz。

A preamplifier for the STM-64（10 Gbit/s）optical receiver in SDH system is realized by using TSMC 0. 18μm CMOS Technology. The RGC（Regulated Caseode）configuration is employed in the preamplifier because of its low input resistance and broad bandwidth. Further more, a shunt peaking technique is adopted by using a conventional active inductor in order to achieve a broad bandwidth. The whole supply voltage is 1.8 V. Simulation results indicate： the transimpedanee gain is 59. 2 dBΩ, and the -3 dB bandwidth is 9.08 GHz.