Apparatus and method for calibrating mismatches of time-interleaved analog-to-digital converter

A method of correcting mismatch of a time-interleaved analog-to-digital converter comprising a plurality of analog-to-digital converters, the method comprising:

• providing a non-return-to-zero (NRZ) signal to the time-interleaved analog-to-digital converter in a correction mode;
• generating parameters based on a first output signal of the time-interleaved analog-to-digital converter in the correction mode;
• and
• generating a second output signal by processing the first output signal based on the parameters,
• wherein the NRZ signal is a pulse signal having a period different from a product of a sampling period of the time-interleaved analog-to-digital converter and a number of the plurality of analog-to-digital converters comprised in the time-interleaved analog-to-digital converter.

A method of correcting mismatch of a time-interleaved analog-to-digital converter comprising a plurality of analog-to-digital converters, the method comprising:

• providing a pulse signal to the time-interleaved analog-to-digital converter in a correction mode to control the time-interleaved analog-to-digital converter to generate a first output signal;
• generating parameters based on the first output signal output from the time-interleaved analog-to-digital converter;
• and
• generating a second output signal by processing the first output signal based on the parameters,
• wherein the generating the parameters comprises evaluating a fitness of the parameters, according to a genetic algorithm,
• wherein the pulse signal is a non-return-to-zero (NRZ) signal,
• wherein the generating the parameters further comprises measuring a magnitude of spurs except for a frequency component of the NRZ signal in the first output signal, and
• wherein the fitness is dependent on the magnitude of the spurs.