Accurate gain calibration of analog to digital converters

Details Accurate gain calibration of analog to digital converters Accurate gain calibration of analog to digital converters

1998-09-30

2000-08-29

Phan, Trong

Coded data generation or conversion

Converter calibration or testing

341143, H03M 110, H03M 300

Patent

active

061115290

ABSTRACT:
A technique for performing gain calibration on an analog-to-digital converter (ADC) in which offset errors are canceled during gain calibration. In an ADC having a differential integrator at the input of a modulator, two calibration measurements are obtained at the output, one based on a calibration input and the second based on the reversal of the input polarity. The two measured outputs are subtracted from each other so that offset errors introduced by the converter during gain calibration are cancelled.

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