1.25Gb/s低功耗CMOS光接收机限幅放大器  

1.25 Gb/s Low Power CMOS Limiting Amplifier for Optical Receiver

作　　者：田俊[1] 王志功[1] 梁帮立[1] 胡艳[1] 章丽[1] 熊明珍[1] 施毅[2] 郑有炓[2] 

机构地区：[1]东南大学射频与光电集成电路研究所,南京210096 [2]南京大学物理系,南京210093

出　　处：《固体电子学研究与进展》2004年第3期313-317,共5页Research & Progress of SSE

基　　金：国家 8 6 3计划项目 2 0 0 1 AA31 2 0 1 0与 2 0 0 2 AA31 2 2 30资助课题

摘　　要：设计并实现了用于光纤用户网和千兆以太网光接收机的限幅放大器。电路采用有源电感负载来拓展带宽、稳定直流工作点 ,通过直接耦合技术来提高增益、降低功耗。测试结果表明 ,在从 5 m Vp- p到 5 0 0 m Vp- p,即40 d B的输入动态范围内 ,在 5 0 Ω负载上的单端输出电压摆幅稳定在 2 80 m Vp- p。在 5 V电源电压下 ,功耗仅为1 30 m W。电路可稳定工作在 1 5 5 Mb/s、62 2 Mb/s、1 .2 5 Gb/s三个速率上。A limiting amplifier for optical access network and gigabit Ethernet has been realized. Active inductors are employed as loads to expand the bandwidth and to get stable DC operation points, and the direct-coupled technique is used to increase voltage gain and reduce power dissipation. The amplifier exhibits an input dynamic range of 40 dB(from 5 mV_(p-p) to 500 mV_(p-p)),and an approximately constant single-ended output voltage swing of 280 mV_(p-p) over a 50 Ω load. It consumes a DC power of only 130 mW under a single 5 V supply. The realized limiting amplifier can operate well at standard bit rates of 155 Mb/s, 622 Mb/s and (1.25 Gb/s.)

关 键 词：限幅放大器 互补金属氧化物半导体工艺 有源电感 直接耦合 

分 类 号：TN722[电子电信—电路与系统]