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Gain and timing mismatches in a time-interleaved analog-to-digital converter (TI-ADC) are a type of frequency response mismatches with linear-phase and constant magnitude. They significantly effect the performance of a TI-ADC. This paper presents a performance analysis of an adaptive blind calibration technique for gain and timing mismatches in a TI-ADC. Furthermore, we demonstrate the applicability of this technique to different type of input signals through simulation results.