Method and apparatus for split reference sampling

Details Method and apparatus for split reference sampling Method and apparatus for split reference sampling

2007-01-23

2007-01-23

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S155000, C341S172000

Reexamination Certificate

active

10272045

ABSTRACT:
A switched-capacitor circuit for use in analog-to-digital conversion samples an input signal with respect to a reference voltage, without having to generate the reference voltage, by using charge redistribution. The switched-capacitor circuit prevents the need to dissipate power while producing the reference voltage. The switched-capacitor circuit is coupled to a comparator and to a logic circuit which provides control signals for switching. The switched-capacitor circuit comprises a plurality of capacitors arranged according to several embodiments.

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