In the LT1567 Linear Technology (www.linear-tech.com/
pdf/1567i.pdf) has produced a component specially developed for building analog filters with cutoff frequencies up to 5 MHz.
It contains two wide-bandwidth operational amplifiers,
the second of which has a fixed configuration as an inverting amplifier with unity gain. To construct a lowpass filter just two external capacitors and three resistors are required.
Example component values for corner frequencies of 1 MHz, 2 MHz, and 5 MHz are shown in the table.