SIT9121AI-2B3-25E20.000000E

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Oscillators are widely used across a range of applications and the SIT9121AI-2B3-25E20.000000E model is no exception. This type of oscillator is typically used in signal frequency generations, systems timing and synchronization, in-system clock synchronization, clock signal generation, and waveform generation. In this article, we will look at the field of application of this particular oscillator and its working principle.

Field of Application

The SIT9121AI-2B3-25E20.000000E oscillator is suitable for applications requiring high precision, low phase jitter and high frequency stability. It has a wide frequency range from 1 MHz up to 20 MHz, with a frequency resolution of up to 1 MHz and frequency stability of up to ±0.3 ppm. It is also suitable for applications in which the generated frequency needs to be programmable, which is enabled by the serial-back-plane configurability. This type of oscillator is especially useful in communication systems such as wireless 802.11, UWB, Zigbee, and Bluetooth. It is also suitable for WiGig, video conferencing, radio broadcast receivers, aircraft radars, point-to-point radio links, cable TV modems, and power train control systems.

Working Principle

The working principle of an oscillator is simple yet crucial. In order to generate a periodic signal, it needs feedback. The output signal of the oscillator is fed back to the input through a feedback system, setting up a chain of events which results in a periodic output signal. This process is repeated over and over again, resulting in a stable and regular output signal. In the SIT9121AI-2B3-25E20.000000E oscillator, this is achieved by using a transceiver, a voltage controlled oscillator, and a frequency synthesizer.

The transceiver is responsible for converting the input signal from a digital format (such as SPI) to an analog format, which is then fed to the frequency synthesizer. The frequency synthesizer is what enables configurable frequencies by controlling the frequency of the voltage controlled oscillator (VCO), which is dependent on the value of the control voltage. The VCO then outputs an oscillating signal based on the input frequency, which is used as the output of the oscillator.

Conclusion

The SIT9121AI-2B3-25E20.000000E oscillator is a versatile type of oscillator used in a wide range of applications. Its wide range of frequencies and high frequency stability makes it suitable for communication systems, WiGig, video conferencing, broadcast receivers, aircraft radars, power train control systems and many more. Its working principle is based on a feedback system with a transceiver, a voltage controlled oscillator, and a frequency synthesizer.

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