SIT9121AC-2D-XXS

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Programmable Oscillators are widely-used components in modern electronic systems. The SIT9121AC-2D-XXS is a type of programmable oscillator specifically designed to serve as a variable frequency source in a variety of systems. This article covers the application field and working principle of the SIT9121AC-2D-XXS.

Application Field

The SIT9121AC-2D-XXS programmable oscillator can provide an adjustable frequency with high stability for a variety of applications. It is typically used in any electronic application that requires a stable and accurate frequency reference, such as radio communications, military, defence and space applications, navigation systems, and robotics. Additionally, the oscillator is suitable for use in test and measurement systems due to its low phase noise and low jitter performance.

Working Principle

The SIT9121AC-2D-XXS programmable oscillator operates on the concept of the distributed resonator. It consists of two quartz crystals connected in series to form a single, high-frequency resonator. The oscillator can be programmed to generate a variable frequency with a high degree of accuracy and stability. The output frequency of the oscillator is adjusted by varying the voltage applied to the two connected quartz crystals in the resonator. This voltage tuning of the frequency is known as voltage-controlled oscillation (VCO). The input voltage can be varied to give an output frequency range of up to 200MHz.

The SIT9121AC-2D-XXS programmable oscillator is an integrated circuit (IC) consisting of the resonator, programming circuitry and MOSFET switches. It also includes special logic to synchronize the output frequency with the input voltage, allowing for a fast and stable frequency response. Additionally, the programmable oscillator offers exceptional long-term stability and temperature characteristics, making it ideal for use in harsh environmental conditions. The output frequency can also be adjusted and locked to an external reference clock, providing an additional layer of control and precision.

Conclusion

The SIT9121AC-2D-XXS is a programmable oscillator designed to generate an adjustable frequency with high stability. It is suitable for use in a variety of applications including radio communications, military, defence and space applications, navigation systems, and robotics. The oscillator works on the principle of the distributed resonator, with two quartz crystals connected in series and voltage-controlled oscillation (VCO) used to adjust the output frequency. Additionally, the circuit includes special logic for synchronizing the output frequency, as well as providing superior long-term stability and temperature characteristics. In conclusion, the SIT9121AC-2D-XXS programmable oscillator is an excellent choice for use in harsh environments or applications demanding accurate and stable frequency control.

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