2nd Order OpAmp Lowpass Filter
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Notes: C1 must be at least 2*C2 R1 and R2 are interchangeable If C1=2*C2 then R1=R2 If C1=C2 the filter has real poles and the passband is flat. If R1=R2 and C1>C2 the filter has complex poles. |
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Notes: C1 must be at least 2*C2 R1 and R2 are interchangeable If C1=2*C2 then R1=R2 If C1=C2 the filter has real poles and the passband is flat. If R1=R2 and C1>C2 the filter has complex poles. |