Design of a CMOS adaptive charge pump with dynamic current matching

被引：0

作者：

Zhang, Tao

Zou, Xuecheng

Zhao, Guangzhou

Shen, Xubang

机构：

[1] Institute of Pattern Recognition and Artificial Intelligence, Huazhong University of Science and Technology

[2] Department of Electronic Science and Technology, Huazhong University of Science and Technology

[3] Xi'an Microelectronic Technology Institute

来源：

Wuhan University Journal of Natural Sciences | 2006年 / 11卷 / 02期

关键词：

Charge pump; Current matching; Low voltage difference signal; Phase frequency detector; Phase offset; Phase-locked loop;

D O I：

10.1007/BF02832132

中图分类号：

学科分类号：

摘要：

A novel structure for a charge pump circuit is proposed, in which the charge-pump (CP) current can adaptively regulated according to phase-locked loops (PLL) frequency synthesis demand. The current follow technology is used to make perfect current matching characteristics, and the two differential inverters are implanted to increase the speed of charge pump and decrease output spur due to theory of low voltage difference signal. Simulation results, with 1st silicon 0.25 μm 2.5 V complementary metal-oxide-semiconductor (CMOS) mixed-signal process, show the good current matching characteristics regardless of the charge pump output voltages.

引用

页码：405 / 408

页数：3