Efficient digital self-calibration of video-rate pipeline ADCs using white Gaussian noise

A digital-domain self-calibration technique for video-rate pipeline A/D converters based on a white Gaussian noise input signal is presented. The implementation of the proposed algorithm requires simple digital circuitry. An application design example of the self-calibration of a 12b, 40 MS/s CMOS pipeline ADC is shown to illustrate that the overall linearity of the ADC can be highly improved using this technique.