Liu, S., Lv, N., Ma, H. et al. Analog Integr Circ Sig Process (2017) 90: 1. doi:10.1007/s10470-016-0839-5
This paper introduces an adaptive semiblind background calibration of timing mismatches in a two-channel time-interleaved analog-to-digital converter (TIADC). By injecting a test tone at the frequency of half the overall sampling frequency of TIADC, the timing mismatch between two sub-ADCs can be quickly estimated with great accuracy without affecting the normal operation of the TIADC. The estimated coefficient can then be used in compensation module formed by a fixed structure to calibrate the timing mismatches. Simulation results demonstrate the effectiveness of the proposed estimation and correction technique.
Time-interleaved analog-to-digital converter (TIADC) Timing mismatches Calibration Semiblind Test tone