Fixed Frequency Filter - Low/high pass, 2nd/3rd order Butterworth, Chebychev or Bessel response

This module is a Sallen and Key circuit configuration filter with unity gain in the pass-band. It can be used to realise 3rd order low or high pass filters up to 100kHz, and 2nd order low-pass filters up to 1MHz with appropriate choice of op-amp. When used as a 2nd order low-pass filter, the 1st R-C stage can be used as a 1st order 'roofing' filter to prevent high frequency components getting into the op-amp, which are beyond its capability to suppress. The module can be purchased ready built to the customers own specification.




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For further information download our datasheet -
3rd Order S & K Module.pdf