frequency lock

A frequency divider, also called a clock divider or scaler or prescaler, is a circuit that takes an input signal of a frequency,




f

i
n




{\displaystyle f_{in}}
, and generates an output signal of a frequency:





f

o
u
t


=



f

i
n


n




{\displaystyle f_{out}={\frac {f_{in}}{n}}}
where



n


{\displaystyle n}
is an integer. Phase-locked loop frequency synthesizers make use of frequency dividers to generate a frequency that is a multiple of a reference frequency. Frequency dividers can be implemented for both analog and digital applications.

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