A phase lock oscillator is available in various architectures having different properties. Its basic function is to generate periodic signals. The phase comparator in the circuitry then compares the phase of these periodic input signals and adjusts the oscillator, if needed, to keep the input and the output phases matched. The locked input and output phases ensure that the input and output frequencies are in sync. Besides keeping input/output frequencies in sync, a phase lock oscillator is also used to track the input frequency or to generate an output frequency in multiples of the input frequency. Phased lock oscillators are used extensively for computer clock synching, demodulation, and frequency synthesis-generate stable frequency at the output level as calibrated by the design parameters warranted by the application circuitry. These properties of the PLO are helpful to demodulate calibrated frequency signals, recover needed frequencies from a communication system. Phase lock oscillator is also used to distribute accurately timed pulses in digital circuits like microprocessors. No wonder that the PLO is widely used in radio, telecommunications, computers, and electronic applications. An integrated circuit provides a single phase lock oscillator block and this technique is used in most of the modern electronic devices that handle output frequencies ranging from a fraction of hertz to gigahertz. A PLO is a dynamic low noise frequency source which is available in different configurations that are adapted to different applications and its internal as well as the external environments. A full range can be seen on the Raditek website.