SIT8209AC-3-28S

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Programmable Oscillators

Programmable Oscillators are a type of signal generator that is used to generate a frequency-dependent electrical signal. They are an essential component in many fields, from communications and navigation, to audio engineering and signal control. In particular, the SIT8209AC-3-28S Programmable Oscillator is widely used for a variety of applications.

SIT8209AC-3-28S is a dual phase-locked loop frequency synthesizer that provides programmable digital tuning of main and secondary frequencies. The device is ideal for a range of applications where fast switching and wide frequency range is required. The device is designed to provide a wide variety of frequency configurations across two independent output dividers. It can produce frequencies in the range of 6.5 MHz - 950MHz and is suitable for use in various applications such as GPS receivers, cellular and wireless T.V systems, and modems.

Working Principle

The SIT8209AC-3-28S device operates by using a programmable phase-lock loop (PLL). This circuit is designed to compare the input frequency to an internal reference frequency. If the difference between the two frequencies is too great, the PLL adjusts the internal frequency to match the input. This process continues until the reference frequency matches the input frequency exactly.

The PLL utilizes both a voltage-controlled oscillator (VCO) and a phase detector to generate a frequency-controlled signal. The PLL contains a counter that is initially set to a preset value. The counter is connected to the phase detector, which compares the output and the reference frequency. If the frequencies do not match, the counter is adjusted until they do. This ensures that the output frequency is always the same as the reference frequency.

Application Field

The SIT8209AC-3-28S is ideal for a variety of applications, including avionics, aerospace, test and measurement, communications, navigation, and military applications. It is highly suitable for use in GPS receivers, cellular and wireless T.V systems, and modems. The device can also be used in frequency synthesizers, modulators, radar systems, and frequency-agile antennas. Additionally, the flexibility of the PLL enables the device to be used in a wide range of applications.

In addition, SIT8209AC-3-28S can be used in clock and data recovery systems, digital radio, high frequency sampling circuits, digital audio, and clock and timing systems. It is also highly suitable for use in ultrasonic devices, frequency synthesizer applications, music synthesizers, and radio transceivers.

Conclusion

The SIT8209AC-3-28S Programmable Oscillator is a device that is suitable for a variety of applications across a variety of industries. Its programmable phase-lock loop makes it highly suitable for use in frequency-agile applications, and its wide frequency range makes it ideal for use in communications and navigation systems. This flexibility makes it an ideal component for a range of applications.

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