Help with MASH 111 SDM

[hazem tarek]

hello every one
i have a problem with the mash 111 SDM attached it's model and the m code to plot it's power spectral density ,... BUT i don't know what is the problem with the code i can't find the 60 db slop as it should be !!
can any one help me please ?!

here is a copy of my simple code using the pwelch function.

N=length(A);
fs=10^(3);
[Pxx,fx] = pwelch(A,hann(2^16),0,2^(18),fs);
plot(fx,10*log10(Pxx));
grid on

thanks everyone !

 

[hazem tarek]

hello guys
is my topic in the wrong forum ?
shall i move it to another ?

any suggestions ?

 

[erikl]

hello guys is my topic in the wrong forum ?

Not quite, but may be there are more dedicated ones.

shall i move it to another ?

You might!

any suggestions ?

ASIC Design Methodologies & Tools , or here in the
Designer's Guide Community Forum -> Measurements -> Phase Noise and Jitter Measurements

You know probably this link ?

 

[hazem tarek]

thanks u very much,
i appreciate ur effort