Delta-Sigma Modulators and Decimation Filters
Delta-Sigma Modulators and Decimation Filters
Delta-Sigma Modulators and Decimation Filters
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Compensated CIC <strong>Filters</strong><br />
<br />
In typical decimation/interpolation filtering applications<br />
we want reasonably flat passb<strong>and</strong> <strong>and</strong> narrow transitionregion<br />
filter performance. These desirable properties are<br />
not provided by CIC filters alone, with their drooping<br />
passb<strong>and</strong> gains <strong>and</strong> wide transition regions. We alleviate<br />
this problem, in decimation for example, by following the<br />
CIC filter with a compensation nonrecursive FIR filter to<br />
narrow the output b<strong>and</strong>width <strong>and</strong> flatten the passb<strong>and</strong><br />
gain.<br />
Source: http://www.design-reuse.com/articles/10028/underst<strong>and</strong>ing-cascadedintegrator-comb-filters.html
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