R1 = R2 = R C1 = C2 = C
Cutoff frequency (fc) is .707 times maximum output. GAIN = R4/R3 (about 1.59)
This is an equal component sallen-key filter. R3 should be .586 x R4. Shown below is response of filter when input was a 1-volt sine wave :
Page last modified on May 12, 2019, at 04:45 PM
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