The Pi resistor attenuator is a circuit that uses a combination of resistors to reduce the amplitude of a signal without introducing significant distortion. The circuit is similar to a voltage divider, but is designed to handle larger signals and to minimize distortion.
It is a passive circuit, meaning it doesn’t require any external power source to operate. The circuit is made up of a combination of fixed value resistors, usually in a T or a Pi configuration, that are used to divide the input voltage and reduce the amplitude of the signal.
