Patent ID: 7514985
Filing Date: 2009-04-07
Classification: H03L

Abstract:
1. A charge pump comprising: a cascoded MOS transistor current mirror comprising a row of cascoded MOS transistors; a first transistor of the row of cascoded MOS transistors controlling output of the charge pump according to a first control signal; a second transistor of the row of cascoded MOS transistors coupled between a drain of the first transistor and a source of the third transistor of the row of cascoded MOS transistors, a drain of the third transistor coupled to an output of the charge pump; a first capacitor having a first terminal coupled to the source of the third transistor and a second terminal coupled to a source of the second transistor; and a first switch coupled between the source of the second transistor and ground and controlled by a second control signal that is an inverse of the first control signal.