Select the Right Operational Amplifier for your Filtering Circuits
When you decide which type of high-speed filter topology to use, the elements of the circuit govern the ultimate bandwidth of your circuit. If your filter frequency range is up to tens of mega-hertz, the active filter design is the most effective design. If your filter requirements are above 20 MHz, then the lumped-element topology is the appropriate circuit to use. In both cases, these filter topologies can achieve the standard filter responses, such as Butterworth, Bessel, Elliptical, or Chebyshev.