Posted on Mar 10, 2013

Itis often required that a signal be filtered prior to sampling. This can be accomplished with only one device. Use any of the inverting and noninverting filters that can be built with op amps.

Click here to download the full size of the above Circuit.

However, it is necessary that the sampling switch be closed for a sufficient time for the filter to settle when active filter types are connected around the device.

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