The filter shown in the figure can operate with frequencies up to several tens of megahertz thanks to the use of a fast operational amplifier. Resistors and capacitors determine the range of frequencies that can pass. Note the need to decouple the power pins, made with ceramic capacitors mounted as close as possible to these elements. The power supply must be symmetrical and special care must be taken with the board layout, as it is a circuit that operates at high frequency.
