SIT3809AI-2-28NG

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Programmable oscillators are specialized electronic components used to generate a range of frequency signals. SIT3809AI-2-28NG is a part of the programmable oscillator series. The application field and working principle of SIT3809AI-2-28NG are discussed in this article.

Applications

SIT3809AI-2-28NG is a versatile and compact programmable oscillator. It is ideal for use in the following application fields:

• Telecommunications systems
• Computer system peripherals
• Portable electronics
• Satellite/space communication
• Avionics/military applications
• Medical systems

Working Principle

The SIT3809AI-2-28NG works with phase-locked-loop (PLL) circuit design, with a typical operating frequency up to 200 MHz. It is characterized by low jitter, low power consumption and fast startup. The PLL generates a signal having an adjustable frequency, phase, and amplitudes. The frequency is adjusted by an external resistor or by applying an external reference clock. The phase is tooled by a control voltage. The output voltage amplitudes are programmable.

The PLL of the SIT3809AI-2-28NG consists of three main parts: the phase detector, the programmable divider and the voltage controlled oscillator (VCO). The phase detector compares the phase of the incoming reference clock and VCO outputs. If they are not equal to each other, the phase detector will generate a feedback signal to the programmable divider. The programmable divider is used to generate an output frequency by dividing the input clock frequency by an adjustable factor. The VCO is used to convert the feedback signal into a frequency, which can be adjusted by the input control voltage.

Conclusion

The SIT3809AI-2-28NG is an advanced programmable oscillator capable of generating signals with a wide range of frequency, phase and amplitudes. Its use can be seen in a variety of application fields, ranging from telecommunication systems to medical systems and from computer system peripherals to portable electronics. This article has discussed the application field and working principle of SIT3809AI-2-28NG.

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