High swing PLL charge pump with current mismatch reduction

被引:22
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
关键词
Compendex;
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
收藏
页码:661 / 662
页数:2
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