Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1994-11-22
2000-10-24
Le, Dinh T.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327536, 327537, H03K 301
Patent
active
061373427
ABSTRACT:
An integrated circuit substrate bias pumping arrangement includes a charge pump circuit arranged as a circuit path from an oscillator input to a substrate. The charge pump circuit operates to supply charge to the substrate in response to a level of the oscillator signal. In the charge pump circuit, a pumping transistor transfers stored charge from a pumping capacitor to the substrate without imparting all of a threshold voltage of the pumping transistor as a voltage loss. The pumping transistor has its conduction path connected in a series circuit between the pumping capacitor and the substrate. A control gate electrode of the pumping transistor is bootstrapped to turn on the pumping transistor by a delayed version of the input signal used for pumping stored charge from the pumping capacitor to the substrate. Two of the charge pump circuits can be operated in a push-pull configuration, substrate bias pump.
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McAdams Hugh P.
Tsay Ching-yuh
Brady III Wade James
Le Dinh T.
Rountree Robert N.
Telecky Jr. Frederick J.
Texas Instruments Incorporated
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