A manufacturing method of a CFD circuit according to the present disclosure includes a step of providing a hysteresis comparator that includes two input terminals for receiving a delayed signal and an attenuated signal, has a first threshold and a second threshold, outputs a first output when a difference between voltage values input to the two input terminals is greater than or equal to the first threshold, and outputs a second output when the difference between the voltage values input to the two input terminals is less than or equal to the second threshold; a step of providing a voltage supply unit that applies an offset voltage to the hysteresis comparator; and a step of setting the offset voltage.

A manufacturing method of a CFD circuit according to the present disclosure includes a step of providing a hysteresis comparator that includes two input terminals for receiving a delayed signal and an attenuated signal, has a first threshold and a second threshold, outputs a first output when a difference between voltage values input to the two input terminals is greater than or equal to the first threshold, and outputs a second output when the difference between the voltage values input to the two input terminals is less than or equal to the second threshold; a step of providing a voltage supply unit that applies an offset voltage to the hysteresis comparator; and a step of setting the offset voltage.