Patent ID: 8427349

Claim:
A composite analog-to-digital converter (ADC) for converting an analog input to a digital output, comprising: a main data converter configured to convert the analog input to a first main digital sample according to a first phase from among a plurality of phases of a sampling clock to provide a first main sample and to convert the analog input to a second main digital sample according to a second phase from among the plurality of phases of the sampling clock to provide a second main sample; a reference data converter configured to convert the analog input to a reference digital sample according to a reference phase; an estimation module configured to compare the reference digital sample and the first main digital sample to provide a first correction parameter and to compare the reference digital sample and the first main digital sample to provide a second correction parameter; a compensation module configured to adjust the first main sample based upon the first correction parameter to provide a first corrected digital sample and to adjust the second main sample based upon the second correction parameter to provide a second corrected digital sample; and a recombination module configured to combine the first corrected digital sample and the second corrected digital sample to provide the digital output.