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Experiment 1

Realization of a Butterworth Filter using Sallen-Key Type Sections

1.     Following the Butterworth design tutorial, determine the specifications for the sections needed for your filter.

2.     Following the design procedures in Franco, design the sections needed to build the filter.

3.     Simulate the filter using PSpice, or an equivalent computer simulation program, and determine that the filter will indeed meet your specifications. Obtain plots using  PROBE  for both the amplitude and phase characteristics. Obtain a detailed plot of the amplitude characteristic for | G( f ) |  ≤  1 dB. Be prepared to show your instructor the neatly prepared results of your work to this point.

4.     Prototype the filter and verify that it meets your specifications. Ask your instructor to witness this (climactic) event. Take data to plot the amplitude response of your filter. On the same plot draw the response predicted by theory. All of the above should be included in the report.