1. Gain (Aν) below cut-off frequency: Aν = 1 / (1 + (R2/R1))
2. Cut-off frequency (fOH): fOH = 1 / (2πRC)
Where:
- Aν is the gain of the filter
- R1 and R2 are the resistor values
- R is the equivalent resistance (R1 + R2)
- C is the capacitor value
- fOH is the cut-off frequency (-3 dB point)
