• May 27, 2026 sallen key low pass filter design program ch determines the selectivity or sharpness of the filter. The op-amp provides the necessary gain and buffering. The transfer function of the Sallen-Key low pass filter can be expressed as: \[ H(s) = \frac{A}{1 + s/\omega_0 Q + s^2/\omega_0^2} \] where: By Elyssa Lebsack
