H. -W. Kang, H. -K. Hong, S. Park, K. -J. Kim, K. -H. Ahn and S. -T. Ryu, “A Sign-Equality-Based
Background Timing-Mismatch Calibration Algorithm for Time-Interleaved ADCs,” in IEEE
Transactions on Circuits and Systems II: Express Briefs, vol. 63, no. 6, pp. 518-522,
June 2016, doi: 10.1109/TCSII.2016.2530819.