SIT8209AC-3-28E

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Programmable oscillators are used in applications where the frequency needs to be precisely controlled and tuned over a wide range of frequencies. The SIT8209AC-3-28E is an example of a programmable oscillator that is designed to satisfy these demands. This article will discuss this oscillator’s application and working principle.

Application Field

The SIT8209AC-3-28E has a wide array of potential applications due to its flexibility and accuracy. This oscillator is suitable for use in applications that require exceptional timing accuracy, such as in military equipment, avionics, and automotive electronics. Aside from being used as reference clock sources, these oscillators can be used in digital signal processing and embedded communication protocols. This oscillator is also capable of producing a signal suitable for use in antenna or radar systems. In addition, the SIT8209AC-3-28E is a great partner for FPGA and ASIC systems that need a stable frequency input source. A final potential application for this oscillator would be its use in network, telecommunications, and datacenter infrastructure.

Working Principle

The SIT8209AC-3-28E utilizes a pullable VCXO (voltage control crystal oscillator) circuit to generate its signals. This oscillator has three major components: the resonator, the voltage controller, and the amplifier. The resonator is made up of a quartz crystal; it vibrates when an electrical current is passed through it. The voltage controller regulates the current by varying the input voltage. Finally, the amplifier amplifies the oscillations of the crystal to ensure a strong signal. The oscillations produced by this oscillator have a frequency range of 13Mhz to 62Mhz with an output voltage of 3.3V.This oscillator also offers improved stability because of its temperature compensation. In order to be able to compensate for any temperature changes, this oscillator has a built-in temperature sensor that monitors the ambient temperature. The output frequency is determined by the current of the external clock driver, as well as the temperature. The output frequency will be more stable since the adjustment of the current on the external clock driver can restore the frequency to its original value when the temperature changes.

Conclusion

Overall, the SIT8209AC-3-28E is an ideal choice for applications requiring precise timing accuracy. With its pullable VCXO design, it delivers superior stability over extended periods of time and is capable of producing strong signals over a wide frequency range. Its ability to detect any temperature changes and adjust the output frequency accordingly make it a viable option for FPGA and ASIC systems, as well as military, automotive, and avionic applications.

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