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Determine voltage gain of second order high pass butterworth filter. Specifications R3 =R2=33Ω, f=250hz and fL=1khz.

Determine voltage gain of second order high pass butterworth filter. Specifications R3 =R2=33Ω, f=250hz and fL=1khz. Correct Answer -44.19dB

Since R3 =R2 => C2 = 1/(2π ×fL×R2) = 1/(2π ×1kHz×33Ω) => C3 =C2= 4.82µF. Voltage gain of filter |VO/Vin|=AF / = 1.586/ =1.586/252=6.17×10-3 =20log(6.17×10-3)= -44.19dB.

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