Active Filter Designer Tool 
 WEBENCH® Online Design Environment

WEBENCH® Active Filter Designer speeds the creation of sophisticated filters for data acquisition and signal conditioning applications. Designed by National engineers for ease of use, the tool lets engineers create advanced, highly customized filters for all standard filter types: low pass, high pass, band pass and band stop. 

Filter Designer uses a powerful component selection tool to rapidly search among the company's portfolio of operational amplifier products (each with hundreds of different electrical parameters) and immediately configure the necessary bill of materials for every design.  As with all the tools in National's WEBENCH® design environment, the Active Filter Designer tool is available free of charge.