System and method for common mode calibration in an analog...

Details System and method for common mode calibration in an analog... System and method for common mode calibration in an analog...

2006-12-05

2008-12-16

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S155000

Reexamination Certificate

active

07466249

ABSTRACT:
A conversion circuit increases a gain of an analog-to-digital converter (ADC) preamplifier by minimizing a common mode offset voltage between an input signal and a reference signal. The feedback controller circuit calibrates an input common mode voltage to mitigate a common mode offset voltage. Reduction of the common mode offset voltage increases the gain of the ADC preamplifier. In an example, the method is executed during a hold phase of a track-and-hold circuit that transmits the input signal to the ADC.

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