SIT9121AI-2C-33S

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Programmable oscillators are electronic components which can generate a preset frequency depending on a certain user-defined design of the circuit. Programmable oscillators can range from a simple monostable multivibrator-based design to a more complex but powerful phase-locked loop design. Each type of programmable oscillator has various application fields, and the SIT9121AI-2C-33S falling under the phase-locked loop type is no exception.

The SIT9121AI-2C-33S is a high-precision programmable oscillator with CMOS output, rated at 2.5V. It covers a frequency range of 8KHz to 250MHz, and its output impedance is 40 ohms. The wide frequency range and high precision make it ideal for a variety of applications, such as general-purpose microcontroller design, consumer electronics design, industrial automation, test and measurement, and professional audio and video equipment.

The key feature of the SIT9121AI-2C-33S is its highly programmable nature, allowing it to be adapted to a wide range of specific requirements. The oscillator can be programmed using the 7-bit programmable divider, which is a serial-in, parallel-out shift register. With this functionality, the frequency can be adjusted to a fixed point with a accuracy of 1in 10^9. This gives the oscillator high stability and extremely low noise, which is essential for many application.

The working principle of the SIT9121AI-2C-33S is relatively simple but effective. It uses a reference oscillator, which provides a stable and accurate frequency source for the PLL circuit. This is then connected to the voltage-controlled oscillator (VCO), which is the key component of the PLL circuit. The PLL circuit compares the frequency of the reference oscillator to the frequency of the signal input, and adjusts the frequency of the VCO accordingly. This adjustable frequency is then used to clock the main oscillator, which produces the desired output signal.

The SIT9121AI-2C-33S Programmable Oscillator is designed to offer the highest frequency stability, the best accuracy, and the highest output power, due to its use of the most advanced circuit architecture and components. This makes it ideal for a variety of applications, from general purpose to high precision. Its high level of versatility and customizability makes it also suitable for a wide range of industrial, scientific and military purposes.

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