A statistics-based digital background calibration technique for pipelined ADCs
The proposed calibration technique continuously operates in the background during normal data-conversion operation of pipelined ADCs. This scheme digitally mitigates gain, second-order, and third-order errors in the digital output of the pipelined ADCs. The presented method just requires one integrator at the sampling-rate of pipelined ADCs to mitigate conversion errors. This technique is not sensitive to the residue amplifier offset. This method can be used to simplify analog circuit design in pipelined ADCs.
calibration adaptive systems analog-to-digital conversion linearization techniques