SIT8209AI-81-18E-133.330000X

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Oscillators are widely employed in radio, radar and communication equipment for frequency-control and stabilization purposes, and the SIT8209AI-81-18E-133.330000X oscillator is no exception. This oscillator is typically used for local oscillator, frequency synthesizer and timing application.

The SIT8209AI-81-18E-133.330000X is an oscillator monolitically integrated in a hermetically sealed, surface mount package. It has a frequency of 133.330000MHz, which is switchable via two pin-selection options, and a maximum frequency variation of 0.2%. The operating supply voltage is 3.3V and the operating temperature range is -40°C to 85°C.

In terms of performance, this oscillator exhibits excellent thermal stability, due to its low propagation delay and fast start-up time. It has an excellent phase-noise performance of -152dBc/Hz@20kHz offset from the carrier. Also, it has an incredible power consumption of less than 2mW.

At the heart of the SIT8209AI-81-18E-133.330000X oscillator lies its working principle, which is basically the same as all other oscillators: use of positive feedback. This is achieved by directing the output of an amplifier, filter, or other active component back to its input in a manner which causes it to oscillate. The frequency of oscillation is determined by the resonant circuit, in this case an quartz crystal, as well as the electrical, mechanical and dielectrical properties of the electronic components used.

Positive feedback is an important part of the oscillator’s operation since it creates an environment conducive for the stable oscillations of the output signal. To ensure the oscillations are stable, the oscillator components must be designed specifically for this purpose. In this oscillator, these components include fused capacitors, resistors, and inductors. These components work in conjunction with the oscillator crystal to control the overall frequency of the circuit and the phase-noise performance.

Overall, the SIT8209AI-81-18E-133.330000X oscillator is an ideal solution for local oscillator, frequency synthesizer, and timing applications. It provides excellent thermal stability, an unbelievable frequency variation of 0.2%, and outstanding phase-noise performance of -152dBc/Hz@20kHz offset from the carrier. This oscillator also has a very low power consumption of less than 2mW and a wide operating temperature range of -40°C to 85°C.

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