SNR probability in time-interleaved ADCs with random channel mismatches

One of the ways to push the speed limits of Analog to Digital Converters (ADCs) is to time-interleave several channels. However, any mismatch between channels degrades the converter resolution. This work is a deep study of the impact of random time skew, gain and offset mismatches on the Signal-to-Noise Ratio (SNR). The SNR probability density function (PDF) is determined as a function of both these errors and the number of channels. It provides valuable information about the performance margins that could be expected in a design.