Arrangement for sampling an analog signal at a selectable sampling rate

摘要

If different sampling rates are allowed during the sampling of analog signals, the problem occurs that the low-pass filtering must be adapted to the respective sampling rate before the sampling in order to avoid aliasing or, respectively, in order to be able to sample the desired signal bandwidth completely. In the present invention, this adaptation is achieved in a simple manner and with little expenditure by the fact that a filter with switched capacitors is used, the limit frequency of which filter can be adapted to the respective sampling rate by a correspondingly selected clock rate.