A two-channel time-interleaved analog-to-digital converter (TI-ADC) for communication signals offers a significant increase in the available sample rate of ADCs. Its performance is degraded by timing and gain mismatches. Both timing and gain mismatches are corrected in the digital data section of a two-channel TI-ADC for band-pass input signals. This is a realistic communications system scenario as modern system designs lean towards having the ADC interface with intermediate frequency (IF) signal in the analog section of a digital receiver rather than in the DC centered, analog down converted, in-phase and quadrature pair.