- Published in issue 12/1995 on page 98
10th-order Butterworth filter
The proposed filter consists of two series-connected used-order sections. The resistors used are E96 types with a tolerance of 1%. Their theoretical value is given in the table. The capacitors are E12 types with a tolerance of 10%. Values of all components specified in the diagram have been chosen to ensure that the filter response deviates no more than ±0.02 dB from the ideal response. In spite of this, tolerances of the components and op amp properties may cause a tiny ripple.