Sallan-Key High-pass filter

"The Sallen–Key topology is an electronic filter topology used to implement second-order active filters that is particularly valued for its simplicity.[1] It is a degenerate form of a voltage-controlled voltage-source (VCVS) filter topology. A VCVS filter uses a unity-gain voltage amplifier with practically infinite input impedance and zero output impedance to implement a 2-pole low-pass, high-pass, bandpass, bandstop, or allpass response. The unity-gain amplifier allows very high Q factor and passband gain without the use of inductors.
read more


OE1GPA Homepage

Analog Filter Wizzard
Using Analog Filter Tool

Calculate High-pass
Filter Design and Analysis