Hello everyone,
I am trying to understand the sinusoidal Histogram method, but I have few problems understanding the total thing. I will ask only a couple of questions:
1_ does the sinusoidal first generate an histogram for a perfect sinusoid for an ADC where we calculate the amplitude , frequency according to the perfect ADC as shown in this website http://www.atx7006.com/articles/adc_histogram_test?
2_I tried to calculat histogram value of the example provided by the webiste but I did get different results (https://www.allaboutcircuits.com/te...ions, the ADC,dynamic performance) of the ADC.):

VLE=-0.9375
A=1.1
N=4
LSB=1/(2^N)

Mt=80000
H=zeros(1,2^N-2)
for n=1:2^N-2
a=asin( (VLE+n*LSB)/A )
b=asin( ( VLE+(n-1)*LSB )/A )
H(n)=Mt*(a-b)/pi
endfor

 

There is a reason why many use the "Best Fit Straight Line" linearity check system instead.

 

I will look at that. thanks

 

The claimed advantage of the sinusoidal Histogram method is that it includes the time delay effect on the A/D process.