SIT8209AI-8F-18S-98.304000Y

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Oscillators are defined as the circuits which generate oscillations at a certain frequency. They are widely used in diverse fields because they can produce repetitive waveforms. SIT8209AI-8F-18S-98.304000Y is a type of oscillator which possesses numerous features.

SIT8209AI-8F-18S-98.304000Y is an oscillator based on a voltage-controlled crystal oscillator (VCXO). It is equipped with an in-phase/quadrature (IQ) sine-wave output and has an excellent signal-to-noise ratio. In addition, it supports a wide range of frequencies from 34.5616 MHz to 200.304 MHz, making it suitable for applications that require high accuracy and stability. The SIT8209AI-8F-18S-98.304000Y also features a low jitter and high PSRR performance, as well as a wide operating temperature range from -40 °C to +85 °C.

The application field of SIT8209AI-8F-18S-98.304000Y includes base stations, wireless communication systems, broadcast receivers, test bench equipment, navigation systems, radar systems, satellite communication systems, digital TV receivers, and embedded systems. It is especially suitable for high-stability systems that require low jitter and high PSRR.

The working principle of SIT8209AI-8F-18S-98.304000Y is based on the core component, which is a VCXO. It is a voltage-controlled oscillator that uses a quartz crystal and a negative resistance feedback loop. The voltage-controlled part is sensitive to the external control voltage, which is used to adjust the frequency of the crystal. The feedback loop is used to provide negative resistance to the circuit, ensuring that the oscillations remain at a constant frequency.

The core component of SIT8209AI-8F-18S-98.304000Y is an integrated CMOS voltage-controlled oscillator (VCXO) fabricated on a monolithic wafer. It consists of an amplifier, a voltage-controlled oscillator, a frequency-dividing circuit, phase comparators, and a loop filter. The VCXO contains a quartz oscillator with a frequency-setting circuit and an amplifier. The frequency-setting circuit can be programmed using a control voltage, which is used to adjust the frequency of the quartz oscillator in order to generate the required output frequency. The amplifier and the frequency-dividing circuit work together to provide the required output frequency.

The VCXO operates by generating a voltage-controlled periodic signal using an amplifier and the quartz oscillator. The voltage-controlled periodic signal is then divided down by the frequency-dividing circuit to generate the output frequency. The frequency-dividing circuit consists of two phase comparators, A and B, which compare the output frequency to the reference frequency. The loop filter then adjusts the control voltage in order to minimize the difference between the two frequencies. This ensures that the oscillations remain at a constant frequency.

To sum up, SIT8209AI-8F-18S-98.304000Y is a type of oscillator that is based on a voltage-controlled crystal oscillator. It is widely used in diverse fields such as base stations, wireless communication systems, and broadcast receivers due to its excellent signal-to-noise ratio, low jitter, and high PSRR performance. The working principle of this type of oscillator is based on the core component, a VCXO, which is composed of an amplifier, a voltage-controlled oscillator, a frequency-dividing circuit, phase comparators, and a loop filter.

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