Patent ID: 9231611
Filing Date: 2016-01-05
CPC Classification: H03M

Claim Text:
1. An analog-to-digital converter system comprising: a sampling digital-to-analog converter configured to sample an analog value and to provide a representation of a residue of the sampled analog value with respect to a digital code; a plurality of registers configured to store codes representing weighting factors of the sampling digital-to-analog converter measured to account for variations in a manufacturing process; a control circuit configured to derive and apply a first digital code to the sampling digital-to-analog converter during an analog-to-digital conversion operation, the control circuit comprising a mismatch-shaping encoder configured to selectively permutate bit values of a code to derive the first digital code; and a digital circuit configured to combine bit values of the first digital code with codes stored in the plurality of registers to derive a digital output code representing an analog signal value.