Pre-charge systems and methods for ADC input sampling

Details Pre-charge systems and methods for ADC input sampling Pre-charge systems and methods for ADC input sampling

2006-07-31

2008-09-02

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Sample and hold

C341S155000

Reexamination Certificate

active

07420490

ABSTRACT:
The invention provides methods and systems useful for quickly and accurately sampling a switched capacitive load. Systems are disclosed in which the methods are implemented using an operational amplifier operably coupled to a pre-charge capacitor for storing an input charge. A sampling capacitor is also coupled to the operational amplifier and to the pre-charge capacitor for receiving and holding the input charge. The system is so configured for a coarse sampling phase and a fine sampling phase the to ensure that the sampling capacitor settles quickly to provides an output.

REFERENCES:
patent: 5617093 (1997-04-01), Klein

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