Microchip Technology Inc

FilterLab® Filter Design Software


FilterLab® 2.0 is an innovative software tool that simplifies active filter design. Available at no cost from Microchip’s web site (www.microchip.com), the FilterLab® 2.0 active filter software design tool provides full schematic diagrams of the filter circuit with recommended component values and displays the frequency response.


  • Designs low-pass filters up to an 8th order filter with Chebychev,
    Bessel or Butterworth responses from frequencies of 0.1 Hz to 1 MHz
  • Designs band-pass and high-pass filters with Chebychev and Butterworth responses
  • Low-pass filters use either the Sallen Key or Multiple Feedback topologies
  • Band-pass filters use the Multiple Feedback topology
  • High-pass filters use the Sallen Key topology
  • Capacitor values can be manually selected
  • Generates a SPICE model of the designed filter
  • Design Wizards to simplify user inputs
    • Design Filter Wizard
    • Design Circuit Wizard
    • Filter Selection Wizard
    • Anti-aliasing Wizard
  • Tabs for Frequency Response, Circuit Diagram and SPICE Model views

A video on how to use Filterlab:

Documentation & Software