Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-02-14
2010-02-09
Lam, Tuan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S537000
Reexamination Certificate
active
07659771
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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Lam Tuan
Nguyen Hiep
Realtek Semiconductor Corp.
Thomas Kayden Horstemeyer & Risley
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