imlementation of 3rd order delta sima modulator ADC

[olowobaba]

h0w do I derive a loop filter coefficient to implement design for a 3rd order sigma delta modulator in chain of inetgrator, weighted feed forward summation which has a high pass butterworth NTF with a normalised cut off frequency at 1/16

 

[daniel1]

You can refer to Richard Schrier's book and his Matlab toolbox.