Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Mu-Jung Chen0
Date of Patent
February 9, 2010
0Patent Application Number
116747010
Date Filed
February 14, 2007
0Patent Primary Examiner
Patent abstract
A differential charge pump includes a differential charge pump unit, current adjusting device, and common mode voltage control circuit. The differential charge pump unit is used for generating a output voltage signal according to a pump-up signal and a pump-down signal. The current adjusting device is coupled to the differential charge pump unit for providing an adjusting current signal to the differential charge pump unit as the pump-up signal and pump-down signal are both enabled or disabled. The control circuit is coupled to the differential charge pump unit for outputting a feedback signal to the differential charge pump unit according to the output voltage signal.
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