Reference voltage driving circuit with a compensating circuit

Details Reference voltage driving circuit with a compensating circuit Reference voltage driving circuit with a compensating circuit

2007-05-29

2009-02-24

Lincoln, Donovan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C341S120000

Reexamination Certificate

active

07495480

ABSTRACT:
A compensating circuit for calibrating reference voltage, which is coupled to an operation amplifier having an input end and an output end within a reference voltage driving circuit, is provided in the present invention. The compensating circuit comprises a first capacitor, a second capacitor, and a first switch. The first capacitor is utilized for storing the potential with respect to the reference voltage. The second capacitor is coupled to the operation amplifier for storing the potential difference between the input end and the output end of the operation amplifier. The first switch is electrically connecting to the first capacitor and the second capacitor. When turning on the first switch, the potentials stored in the first capacitor and the second capacitor are combined and input to the operation amplifier to have an output voltage level substantially identical to the reference voltage.

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