What is the primary function of a frequency divider?

The primary function of a frequency divider is to divide the frequency of an input signal by a specified integer. This is achieved by generating an output signal that changes state at a specific fraction of the input signal frequency. For example, if the input frequency is 10 MHz and a frequency divider is set to divide by 5, the output frequency will be 2 MHz.

Frequency dividers are crucial in various applications, such as clock generation in digital circuits, where they help to produce lower frequency signals from a higher frequency clock signal. This division process allows for synchronization and timing adjustments in digital systems.

Other options such as amplifying a signal, filtering out unwanted frequencies, or converting analog signals to digital do not pertain to the core function of a frequency divider. Each of these processes involves different types of circuitry or components, indicating that they serve distinct purposes in electronics.