550BE000189DG

Oscillators are electronic circuits that produce repetitive periodic waveforms, with or without feedback. 550BE000189DG is an oscillator belonging to this group. This article will present its application field and its working principle.

550BE000189DG is mainly used in the voltage mode PLLs and clock synthesizers. It is a medium frequency voltage-controlled oscillator, which can be used to provide the output signals ranging from 11.6 MHz to 1590 MHz. It can be widely used in wideband communication systems, high performance clocks and clock synthesizers. Due to its features of high linearity, low phase noise and +14dBm output level, it is a good choice for wireless applications.

The working principle of 550BE000189DG is based on the principle of frequency synthesis. It is based on dividing the input signal by a certain factor, and then output it as the output signal. To achieve this, its internal configuration consists of multiple stages of signal dividing. The signal input comes from the voltage-controlled oscillator, and the VCO is usually based on the Colpitt\'s oscillator circuit, which is the basis of frequency synthesis. The voltage-controlled oscillator produces a signal, which is then divided by a certain factor, in order to get the desired output frequency. The signal output from the divider stages is then amplified and rectified to form the output waveform.

The output signal from the divider stages is main output signal. The output voltage controls the oscillator frequency by varying the collector voltage or the base voltage of the transistor. This voltage is referred to as the control voltage. The feedback stage further stabilizes the output signal frequency by providing some feedback between the output signal and the control voltage.

In summary, the working principle of 550BE000189DG is based on the frequency synthesis, and it can be used in wideband communication systems, high performance clocks and clock synthesizers. It has high linearity, low phase noise and +14dBm output level, making it suitable for wireless applications.