Modeling of time-interleaved ADCs with nonlinear hybrid filter banks

In this paper, we model time-interleaved analog-to-digital converters (TIADCs) with nonlinear hybrid filter banks (NHFBs), which greatly unifies and simplifies the analysis of TIADCs. The input/output relation of such a nonlinear hybrid filter bank can be used to describe combined offset, gain, aperture delay, input behavior, and nonlinearity mismatches and is therefore an extendable starting point for profound analyses of TIADC behaviors. We show the connection of offset and gain mismatches to nonlinearity mismatches and reveal the two error sources of timing mismatches.