该代码主要是数字域校准办法_PN注入校准(For a simple two step converter, a psudo-random sequence can be injected into the sub-ADC and correlated with the digital output to determine radix errors. See Li and Moon, TCAS II, Sept 2003 or Keane, TCAS I, Jan 2005 for more info.
Below is a Matlab scr ipt which will extract the radix error from a two stage ADC with PN correlation techniques:)