Time-domain Measurement and Calibration of Mismatch Errors in Multi-chip ADC Time-interleaved Systems

Time-interleaved ADC system is an efficient method to increase the system's maximum sampling rate. Because of the limit of the manufacture techniques, time-interleaved ADC system will cause the mismatch errors between different channels. In this paper, a new method based on the sinusoidal signal's time-domain characteristics is given to calibrate the offset errors, gain errors, and sample-time errors between time-interleaved channels rapidly and accurately. And the simulation results are given to illustrate the availability of this method.