A chopped charge pump of PLL

摘要：

　　In this paper, a chopped charge pump with matching up and down pulses was introduced. The proposed topology is based on differential current sources and sinks. a switching circuit for switching on in a first phase one current source of each pair to provide up current pulses, and switching on in a second phase the other current source of each pair to provide up current pulses. The chopped charge pump can eliminate static phase error of PLL. The proposed PLL circuit is designed based on the 0.18um CMOS process with a 3.3V&1.8V supply voltage.

关键词： chopped charge pump static phase error PLL

作者: Pu Luo

作者单位: National key laboratory of science and technology, Chongqing 400060, China

会议类型: 国际会议

会议名称: 2015 Joint International Mechanical,Electronic and Information Technology Conference(JIMET 2015)(2015 联合国际机械,电子与信息技术国际会议)

会议地点: 重庆

会议语种:英文

页码: 1017-1020

在线出版日期: 2015-12-18（万方平台首次上网日期，不代表论文的发表时间）