A chopped charge pump of PLL

DOI

10.2991/jimet-15.2015.191How to use a DOI?

Keywords

chopped charge pump; static phase error; PLL.

Abstract

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.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Pu Luo
PY  - 2015/12
DA  - 2015/12
TI  - A chopped charge pump of PLL
BT  - Proceedings of the 2015 Joint International Mechanical, Electronic and Information Technology Conference
PB  - Atlantis Press
SP  - 1017
EP  - 1020
SN  - 2352-538X
UR  - https://doi.org/10.2991/jimet-15.2015.191
DO  - 10.2991/jimet-15.2015.191
ID  - Luo2015/12
ER  -