FREQUENCY-TO-VOLTAGE CONVERTER

A, a frequency-to-voltage converter including a calculation module, a quantification module and a signal processing module is disclosed. The calculation module receives a frequency signal and calculates a rotational speed signal according to the frequency signal. The quantification module is coupled with the calculation module and receives the rotational speed signal. The quantification module quantifies the rotational speed signal according to a quantification equation and generates a digital quantified signal. The signal processing module is coupled with the quantification module, receives the digital quantified signal, and converts the digital quantified signal into a digital voltage signal. As such, the proper transition time and ripple magnitude can be endured at the same time.