摘要
高性能的锁相环芯片,是当今通信领域研究的一个重点。通过改进普通型电荷泵锁相环电路模块,设计出一种带有共源共栅电流源的差分型电荷泵锁相环,使之有效地控制时钟馈通、电流不匹配、电荷注入和电荷共享等非理想效应,保证电荷泵的充放电速度更快、抖动更低。仿真结果表明,该设计实现了快锁低抖特性。
The design high-performance PLL chip is the key to the field of current communication system. An improvement in a general-charge pump module results in the differential charge pump PLL with cascode current source, which minimizes the current failure to matching, charge injection and charge sharing and other non-ideal effects and affords much faster and lower jitter charge and discharge by the charge pump. The simulation result shows that it has a fast lock and low jitter character.
出处
《黑龙江科技学院学报》
CAS
2008年第6期426-429,共4页
Journal of Heilongjiang Institute of Science and Technology
