一款高精度数控振荡器设计与实现

计算机工程与科学

一款高精度数控振荡器设计与实现

赵信，潘天锲,王飙

（上海高性能集成电路设计中心,上海 210000）

收稿日期:2017-09-02 修回日期:2017-11-01 出版日期:2018-02-25 发布日期:2018-02-25

Design and implementation of a high-resolution

digitally controlled oscillator

ZHAO Xin,PAN Tian-qie,WANG Biao

（Shanghai High Performance IC Design Center,Shanghai 210000,China）

Received:2017-09-02 Revised:2017-11-01 Online:2018-02-25 Published:2018-02-25

摘要/Abstract

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0.5 GHz~2.6 GHz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。

关键词: 全数字锁相环, 数控振荡器, 高精度分辨率

Abstract:

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.

Key words: ADPLL, DCO, high resolution

赵信，潘天锲,王飙. 一款高精度数控振荡器设计与实现[J]. 计算机工程与科学.

ZHAO Xin,PAN Tian-qie,WANG Biao.

Design and implementation of a high-resolution

digitally controlled oscillator

[J]. Computer Engineering & Science.

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