SIT9121AC-2D-33S

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Programmable Oscillators are a type of oscillator families consisting of a wide range of frequency control products that can be tailored to the end-users’ requirements by varying the external frequency control components. This type of oscillator is used in a variety of applications, including satellites and radar systems, active antennas, and many laboratory instruments. The SIT9121AC-2D-33S oscillator is an example of one type of programmable oscillator.

In terms of its application, the SIT9121AC-2D-33S is a two-channel oscillator featuring two independently adjustable output frequencies. It is ideal for applications requiring oscillator synchronization between two points, such as in frequency synthesisers, satellite communications systems, radars, and many laboratory instruments. This oscillator also offers a wide range of frequencies, making it useful for a variety of applications.

The main working principle of the SIT9121AC-2D-33S programmable oscillator is based on phase-locked loop (PLL) architecture. This is a type of feedback system used in applications where a precise frequency is required. The PLL is used to generate a precise frequency based on the feedback loop in which a fixed frequency input signal is process and compared with an adjustable output frequency. If any difference is detected in the two frequencies, the output frequency is adjusted accordingly until the input and output frequencies match.

The SIT9121AC-2D-33S oscillator uses a Programmable Phase Generator (PPG), which provides precise control of the output frequency. The PPG allows for the adjustment of the output frequency in the range of 50Hz to 150MHz for both channels. The PPG is connected to a voltage-controlled oscillator (VCO) that is further connected to a low-pass filter (LPF). The LPF is used to filter out any spurious frequencies that are generated by the VCO, allowing for a clean output frequency.

The SIT9121AC-2D-33S oscillator also features an adjustable tracking mode. When this mode is enabled, the output frequencies of both channels are “locked in” and follow each other precisely. This feature is useful for applications such as frequency synthesisers and satellite communications systems, where precise synchronization between two points is essential.

The SIT9121AC-2D-33S programmable oscillator is a versatile and powerful oscillator that is suitable for a variety of applications requiring precise frequency control. With its PPG and adjustable tracking mode, it can be used to generate a precise and consistent output frequency while maintaining synchronization between two points. This makes it an ideal choice for applications requiring precise oscillator synchronization, such as frequency synthesisers, active antennas, radar systems, and many laboratory instruments.

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