Dear Dr. Schreier I am trying to use the toolbox to simulate a Sigma Delta Converter in Simulink. I was able to do it succesfully for a CIFF structure and now I am doing it for a CIFB structure.
Although I am able to simulate the Sigma Delta with the toolbox, it is unstable in Simulink.
Moreover I find that the CIFB topology shown in the manual is different as in this report (refer to figure 4 on page 5):
My code is:
ntf=synthesizeNTF(order, OSR, OPT, H_inf, f0);
ABCD = stuffABCD(a,g,b,c,'CIFB');
Then I use the calculated a,g,b,c values in simulink.