Difference Between Active Filter and Passive Filter (Comparison Chart)

Difference between Active Filter and Passive Filter

Contents

The Key Difference Between Active and Passive Filter is that the Active Filter use transistors and operational amplifier for the filtration process. And in the Passive Filter use resistance, inductor, and capacitor for signal generation. There is another difference is that active filter requires an external power supply whereas passive filters operate only on the signal input.

Active Filter	Passive Filter
It uses active devices like Transistor, Op. Amps. etc.	It uses passive devices like Resistor, Capacitor, Inductor, etc.
Frequency is response more sharper	Frequency is response less sharper.
More expansive	Less expensive
More complex	Less complex
More sensitive	Comparatively less sensitive
Comparatively less sensitive	Lower Gain
High Q factor	High Q factor