2.5Gb/s光接收机限幅放大器  

Design of the Limiting Amplifier in 2.5Gb/s Optical Receiver

作　　者：白涛[1] 韩良[1] 王进祥[1] 

机构地区：[1]哈尔滨工业大学威海国际微电子中心,威海264209

出　　处：《微处理机》2008年第6期11-13,16,共4页Microprocessors

摘　　要：限幅放大器采用全差分结构,利用有源电感技术和可调节共源共栅结构在1.8伏电源电压下有效地扩展了带宽和提高了增益。限幅放大器在SMIC 0.18μm CMOS工艺下设计完成。增益带宽放大单元采用两级级联,降低了功耗。仿真结果表明限幅放大器具有47dB的差动增益,3GHz带宽,29mW功耗。对于从3.6mVpp到1.2Vpp较宽的输入动态范围,均可保持稳定良好的输出眼图。A fully differential CMOS limiting amplifiers with low voltage drop active inductors and RGC for bandwidth and gain enhancement is presented in this paper. Only two gain - bandwidth stages are used to decrease the power dissipation. The amplifier is designed in a SMIC 0.18μm CMOS technology and a simulation shows a bandwidth of 3GHz, a differential gain of 47dB, and a power dissipation of 29mW from 1.8V power supply. A good output eye diagram can be achieved in a wide dynamic input range from 3.6mVpp to 1.2Vpp.

关 键 词：互补金属氧化物半导体 限幅放大器 有源电感 可调节共源共栅 

分 类 号：TN432[电子电信—微电子学与固体电子学]