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Design >> Mixed-Signal Design >> Incremental ADC query
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Message started by singh on Dec 21^st, 2011, 9:52am

Title: Incremental ADC query
Post by singh on Dec 21^st, 2011, 9:52am

i had certain questions regarding the filter section in incremental ADC,
1) what is the significance of using (n+1) order digital filter for n order single feed forward loop modulator instead of using n order filter?
2) in the attached paper, for 2nd order incremental ADC, the second integrator output has been calculated and the term (n-i+1) is derived to cancel the error (page 7 and equation 3). if we have third order single loop incremental ADC, what equation we will get at the output of third integrator?

thanks in advance