一款高精度数控振荡器设计与实现  

Design and implementation of a high-resolution digitally controlled oscillator

作　　者：赵信 潘天锲 王飙 

机构地区：[1]上海高性能集成电路设计中心,上海210000

出　　处：《计算机工程与科学》2018年第2期218-223,共6页Computer Engineering & Science

摘　　要：数控振荡器是全数字锁相环的关键部件,为其提供高频输出时钟。数控振荡器的性能直接影响全数字锁相环的频率范围和抖动性能。提出了一种基于全数字标准单元库设计的数控振荡器,该结构采用粗调、中调和精调级联的调节机制,实现了0.5GHz^2.6GHz的高频率范围和0.8 ps的高调节精度。在先进工艺下实现了该数控振荡器设计,并基于此数控振荡器完成了全数字锁相环的系统设计,系统抖动小于2 ps,功耗10 mW。As a key component of All-Digital Phase-Locked Loop（ADPLL）,Digitally Controlled Oscillator（DCO）provides a high-frequency output clock.The DCO performance directly affects the frequency range and jitter performance of ADPLL.This paper proposes a DCO based on all-digital standard cell library design.The structure includes the coarse,medium and fine adjustment stages,which achieves a high frequency range of 0.5 GHz^2.6 GHz and a high adjustment resolution of 0.8 ps.The DCO is designed and implemented in an advanced process.Based on this DCO,an ADPLL is designed and implemented.The system jitter is less than 2 ps and the power is 10 mW.

关 键 词：全数字锁相环 数控振荡器 高精度分辨率 

分 类 号：TP303[自动化与计算机技术—计算机系统结构]