消除锁相环中由于短沟道效应导致的抖动

摘要

采用 Magnachip 0.13μm CMOS工艺，设计了一款能可靠地工作在455MHz频率的低功耗电荷泵锁相环。在设计过程中，对短沟道效应带来的影响进行了详细的分析，并提出了一种如何消除由于短沟道效应导致的抖动方法。最终利用Hspice软件进行了仿真测试，仿真结果显示，在1.5V工作电压下，整个电路的功耗小于8mW，锁定时间小于15μs。%A low-power charge-pump pll is designed which is used the Magnachip 0.13μm technology and can be worked in the 455MHz frequency.The short-channel effect is analyzed and proposed one method which can eliminate the jitter induced by short-channel effect.And the system is simulated using Hspice software,the result shows that the circuit power is less than 8mW under the 1.5V supply voltage condition,locking time is less than 15μs.