Reference voltage generating circuit

Details Reference voltage generating circuit Reference voltage generating circuit

2006-07-24

2008-11-25

Williams, Howard (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S150000

Reexamination Certificate

active

07456769

ABSTRACT:
A reference voltage generating circuit includes a first capacitor having a first end and a second end; a second capacitor having a third end and a fourth end; a first switch for selectively coupling a predetermined voltage to the first end of the first capacitor; a second switch for selectively coupling the third end of the second capacitor to the first end of the first capacitor; a third switch for selectively coupling the first end of the first capacitor to a reference voltage level; and a fourth switch for selectively coupling the second end of the first capacitor to a reference voltage level; wherein the first capacitor samples the predetermined voltage in a first stage and re-distributes charges to the second capacitor in a second stage.

REFERENCES:
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patent: 6055168 (2000-04-01), Kotowski et al.
patent: 6147522 (2000-11-01), Rhode et al.
patent: 6323801 (2001-11-01), McCartney et al.
patent: 6396334 (2002-05-01), Aram
patent: 7129875 (2006-10-01), Altun et al.

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