码密度法测试ADC的DNL和INL，可用于逐次逼近型和流水线型ADC。(v1=v1'; code=v1(:,2); code_count=zeros(1,2^numbit); %Code count for i=1:size(code), code_count(code(i)+1)=code_count(code(i)+1) + 1; end %Routine to detect whether the ADC's input is