Available at no cost, the FilterLab active filter software design tool provides full schematic diagrams of the filter circuit with component values and displays the frequency response.
Users can select a flat passband or sharp transition from passband to stopband.
Options, such as minimum ripple factor, sharp transition and linear phase delay, are available. For maximum design flexibility, changes in capacitor values can be implemented to fit the demands of the application. Extraction of this model will allow time domain analysis in spice simulations, streamlining the design process. This eliminates erroneous signals folded back into the digital data due to the aliasing effect.