There are several non-ideal factors exist in pipeline ADC

these errors will distort the ADC performance in different aspects.To further improve the pipeline ADC performance

general description about the ADC error sources is needed

and the corresponding methods to eliminate the errors are need to be researched.In the front part of this article

a comprehensive introduction to the error sources in pipeline ADC transformation path is done

the corresponding calibration methods is introduced

then several commonly used digitally assisted calibration methods are described

in the last part

comparison between different calibration methods is done and a conclusion is drawn.