Coded data generation or conversion – Converter calibration or testing
Reexamination Certificate
2009-03-06
2010-11-02
Nguyen, Khai M (Department: 2819)
Coded data generation or conversion
Converter calibration or testing
C341S118000, C341S155000
Reexamination Certificate
active
07825837
ABSTRACT:
A method for calibrating an analog-to-digital converter includes sampling an analog input signal and generating input samples, reversing the polarity of at least one input sample, averaging the digital output codes associated with a first pair of input samples where the first pair of input samples has opposite polarities, and generating an offset correction value being the average of the digital output codes associated with the first pair of input samples. In another embodiment, a method for calibrating an ADC includes sampling the analog input signal and generating input samples, introducing an incremental value to modify the magnitude of at least one input sample, computing an actual gain value using the digital output codes associated with a first input sample and a second input sample having the modified magnitude, and generating a gain correction value being the ratio of an ideal gain of the ADC to the actual gain.
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Aslan Mehmet
Ghorpade Gururaj
Henderson Richard Dean
Khasnis Priyanka
Kumar DVJ Ravi
Cook Carmen C.
National Semiconductor Corporation
Nguyen Khai M
Patent Law Group LLP
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