Timing mismatches in time-interleaved ADCs (TIADC) greatly degrade the spurious-free dynamic range (SFDR) of this system.For calibrating timing mismatches

based on the spectra relation between the analog input signal and the output signal of the TIADC system

a blind timing mismatch calibration algorithm is proposed by eliminating the error signal in the output signal.By expanding the frequency expression of output signal in Taylor approximation

this algorithm can construct the ideal output signal.By introducing least mean square (LMS) for estimating timing mismatch

this proposed algorithm is aimed at reducing the complexity of hardware and improving the accuracy of calibration algorithms.Experiments show that this algorithm can easily extend to an arbitrary number of channels and improve the SFDR of the output signal about 47dB.