SIT9120AC-1C2-25E155.520000X

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Oscillators produce periodic or aperiodic electrical signals. They are key components used in electronic communication systems, and are required for a wide range of applications such as high-frequency radios, cellular phones, and radar systems. In oscillators, signal frequencies can range from a few Hz to hundreds of GHz. Many different types of oscillators are available, including sinusoidal oscillators, phase-locked oscillators, and armed oscillators.

One type of oscillator is the SIT9120AC-1C2-25E155.520000X. This device is a CMOS-based, high-performance, voltage-controlled oscillator (VCO) with an operating frequency range from 155.520 MHz to 155.536 MHz. The oscillator employs a Pierce type configuration to provide a stable, low-power sine wave output signal. The device includes an on-chip divider to generate an inverse waveform of the sine wave, which is used for synchronizing multiple VCOs. The oscillator offers wide tuning curves with a wide range of frequency control voltages to help ensure high-frequency accuracy and long-term stability.

The application fields for SIT9120AC-1C2-25E155.520000X oscillators include a wide range of commercial and industrial applications, such as telecommunication systems, cellular phones, radio transmitters, and GPS systems. The oscillator can also be used in scientific, medical, and military applications.

The main principle of operation of the SIT9120AC-1C2-25E155.520000X oscillator is based on a voltage-controlled injection-locked frequency divider (VCSID) circuit. The circuit consists of a Pierce-type voltage-controlled oscillator (VCO) and a frequency divider driving a load impedance. The output from the frequency divider is fed back to the VCO, causing the VCO to lock to the output frequency of the frequency divider. The locking frequency is determined by the ratio of the frequency divider, the capacitive characteristics of the load, and the VCO tuning voltage. The gain of the loop is determined by the frequency-pulsing ratio of the frequency divider, which can be tuned by changing the ratio.

The SIT9120AC-1C2-25E155.520000X oscillator provides outstanding performance, with a low phase noise and very low power consumption. The oscillator is simple and easy to use, requiring just a single voltage signal to produce a single oscillation frequency. It is suitable for use in wide range of applications, including communication systems, GPS systems, and cellular phone networks.

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