Sallen-Key High-pass Filter

This is a Sallen-Key High-pass Filter. Use this equations to calculate the Transfer Function for filter at a given frequency or values of R and C. use any Op Amp for assembling the circuit. I have given below some most common op amps pinouts for your convenience.

>>  Calculate the transfer function for Sallen-Key High-pass filter with R and C values

  >> Calculate the R and C values for the Sallen-Key High-pass filter at a given frequency

Note : Use R as Ohms (Ω) and C as farads (F), then Fc will be hertz (Hz).

See below for frequency response of above filter that designed for 20 KHz  cutoff frequency.

R1 = 8.2kΩ
R2 = 8.2kΩ
C1 = 1uF
C2 = 1uF

Cut-off frequency    fc = 19.4091394015 Hz  = 20Hz