An analog-to-digital converter is sampling at a frequency of just 2.5 the bandwidth. Due to the large spread in passive components, the problem of alias filtering is addressed by placing before the...

An analog-to-digital converter is sampling at a frequency of just 2.5 the

bandwidth. Due to the large spread in passive components, the problem of alias

filtering is addressed by placing before the converter a time-discrete filter running

at twice the sample rate and before that time-discrete filter a time-continuous filter.

Is this a viable approach? There are twice as many samples coming out-of the filter

then the converter can handle. Is there a problem?