一种千兆以太网控制器中VCO的设计  

A Design of VCO for Controller of Gigabit Ethernet

作　　者：唐路[1] 王志功[1] 赵文虎[1] 

机构地区：[1]东南大学射频与光电集成电路研究所,江苏南京210096

出　　处：《电气电子教学学报》2004年第2期57-61,共5页Journal of Electrical and Electronic Education

摘　　要：随着通信网络技术的迅速发展 ,以太网技术得到了广泛的运用。千兆以太网是以太网的一种 ,作为一种新的网络体系 ,千兆以太网已成为组建局域网的首选方案。本文中所提出的 VCO(压控振荡器 )是千兆以太网控制器中 PLL (锁相环 )的一个部分。由于 VCO决定了控制器的工作速率 ,因此 VCO的设计是千兆以太网控制器设计的关键。本文给出了 VCO的电路仿真的结果与设计出的版图 ,并对电路与版图的设计方法进行了探讨。本文中所设计的 VCO采用了 TSMC 0 .2 5μm CMOS工艺实现 ,中心振荡频率为 1.2 5 GHz,输出电压的幅度为 62 0 m V,版图的面积为 10 0× 10 0μm2。With the development of communication network, the Ethernet is widely used. The Gigabit Ethernet is a kind of Ethernet. As a new kind of network system, it has become the first choice of building the local area network. The proposed VCO (voltage controlled oscillator) in this paper is a part of PLL (phase locked loop) in the network controller. Because the operating speed of controller depends on VCO, the design of VCO is the key of Gigabit Ethernet network controller. In this paper, the designs of circuit and layout are provided. The designing technique of the circuit and the layout is also discussed in this paper. The proposed VCO is implemented with TSMC 0.25μm CMOS technology. The center frequency is 1.25GHz, the output amplitude is 620mV, and the core chip area is about 100×100μm 2.

关 键 词：千兆以太网 VCO 压控振荡器 控制器 锁相环 

分 类 号：TN752[电子电信—电路与系统] TP393.11[自动化与计算机技术—计算机应用技术]