Method of limiting the noise bandwidth of a bandgap voltage...

Details Method of limiting the noise bandwidth of a bandgap voltage... Method of limiting the noise bandwidth of a bandgap voltage...

2006-05-02

2006-05-02

Berhane, Adolf (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C323S315000

Reexamination Certificate

active

07038440

ABSTRACT:
A bandgap voltage generator includes an output node for providing an output voltage, a current mirror coupled between the output node and a voltage reference, and a biasing transistor coupled to the output node. A feedback line includes a feedback transistor coupled to the output node. A current generator biases the feedback transistor by injecting a current into a bias node of the feedback line. A capacitor is coupled between the bias node and the voltage reference. The feedback line includes a circuit coupled between the bias node and the feedback transistor for causing a current to flow through the feedback transistor, and for increasing a resistance of a portion of the feedback line in parallel to the capacitor.

REFERENCES:
patent: 4349778 (1982-09-01), Davis
patent: 4553083 (1985-11-01), Yang
patent: 6188211 (2001-02-01), Rincon-Mora et al.
patent: 6462526 (2002-10-01), Tanase
patent: 6799889 (2004-10-01), Pennock
patent: 2002/0163378 (2002-11-01), Kadanka

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