摘要
利用0.6μm CMOS工艺设计了一种用于光纤通信的跨阻前置放大器。电路采用推-挽反相器级联形式的结构,本身能够自偏压,不需设计偏压电路,减少了芯片面积,同时它的输出可以端到端地满摆幅工作,而且只要放大部分的2个MOS管都处在饱和区,就能得到最大的电压增益;利用SmartSpice软件对电路进行仿真,结果表明在+5 V电源电压作用下,该放大器的增益为78.9 dbΩ,3 db带宽为540 MHz。
The transimpedance preamplifier in optical fiber communication is designed by applying the 0. 6μm CMOS technology. The architecture of the cascading push-pull inverter is adopted. This structure is of the self-biasing nature, so the biased circuit need not be designed, thus decreasing the chip area. The output swing is full measurement from one port to another port. As long as the two metal-oxide-semiconductor（MOS） transistors of amplification operate in the saturation region, the circuit can reach its high gain region. Simulation of the circuit is made by using the SmartSpice software. The result shows that the gain of the amplifier is 78. 9 dbΩ and the bandwidth is 540 MHz when the supply power is 5 V.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第1期26-28,65,共4页
Journal of Hefei University of Technology：Natural Science
