High swing PLL charge pump with current mismatch reduction

被引：23

作者：

Joram, N. ^{[1
]}

Wolf, R. ^{[1
]}

Ellinger, F. ^{[1
]}

机构：

[1] Tech Univ Dresden, Chair Circuit Design & Network Theory, D-01069 Dresden, Germany

来源：

ELECTRONICS LETTERS | 2014年 / 50卷 / 09期

关键词：

Phase locked loops - Charge pump circuits;

D O I：

10.1049/el.2014.0804

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A compensated charge pump for use in phase-locked loops (PLLs) is presented, which reaches several of the desired design goals for this type of circuit. The measured mismatch between the source and sink currents is below 2.1% for a large output voltage headroom of 83.3% of the supply, while still having a high output resistance of 140 k Omega. This behaviour is reached with a novel dual compensation method. The circuit was implemented in a 180 nm CMOS technology using a 3 V supply.

引用

页码：661 / 662

页数：2

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