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Design >> Mixed-Signal Design >> dynamic range scaling in delta sigma modulator
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Message started by avlsi on Aug 5^th, 2013, 9:06am

Title: dynamic range scaling in delta sigma modulator
Post by avlsi on Aug 5^th, 2013, 9:06am

Hi all,

For 5th order DSM design, I am using schreier's toolbox.
In that we have a function called scaleABCD.
I would like to know what does xlim stand for here.

Because in real circuit,we have vdd, refh,vcm and refl. How can I correlate the xlim Vs the variables mentioned above?

Thanks in advance.

Title: Re: dynamic range scaling in delta sigma modulator
Post by charles_ap on Aug 20^th, 2013, 3:44pm

hi there
guess you dont have the Schreier's textbook with you on ADCs
'Understanding delta sigma converters'

The explanation for this is given on the page 402.

xlim -->The limit on the states. May be given as a vector