SIT8208AC-2F-33E-66.666660X

Oscillators are electrical circuits used for generating waves of a specified frequency or range of frequencies. The SIT8208AC-2F-33E-66.666660X is a type of temperature compensated oscillator (TCXO) developed specifically for radio, satellite, and other communications applications. It operates from a 3.3V supply voltage range and offers frequency stability over a wide temperature range.

Application Field

The SIT8208AC-2F-33E-66.666660X is designed for radio, satellite, and other communications applications where high frequency accuracy is needed over a wide temperature range. The temperature compensated oscillator can operate in frequencies ranging from 26e9 Hz to 66.666660X Hz with a frequency stability of ±0.01 ppm, and a temperature coefficient of ≤ 10.6 ppm/°C. For applications requiring fast start up time, the oscillator offers a fast warm up time of only 4 seconds to within ±0.05 ppm accuracy.

The oscillator can be used in a wide variety of wireless communication applications such as base station equipment, satellite downlinks, and global positioning systems (GPS). It is also suitable for ISM band applications such as telemetry, SCADA, and Internet of Things (loT).

Working Principle

The SIT8208AC-2F-33E-66.666660X is made with a temperature compensated oscillator or TCXO design. The TCXO is based on a quartz crystal resonator with temperature compensation mechanisms which maintain the desired frequency over a wide temperature range. The oscillator includes a voltage controlled oscillator as well as a temperature compensation circuit that adjusts the frequency to maintain a high degree of accuracy.

The oscillator utilizes a quartz crystal resonator to generate a stable output frequency. The frequency stability is improved through the addition of a temperature compensation circuit. This circuit uses thermistors to sense the temperature, and the voltage controlled oscillator (VCO) to adjust the output frequency based on the sensed temperature. The thermistors act like a bridge between the temperature detection and frequency control, and the VCO allows for fine tuning to ensure the oscillator maintains its accuracy.

The SIT8208AC-2F-33E-66.666660X also includes an Auto-Calibration system that constantly adjusts the frequency of the oscillator for maximum accuracy. This helps to reduce the need for manual frequency adjustments, and is useful in applications where stability and accuracy over a wide temperature range is required.

Conclusion

The SIT8208AC-2F-33E-66.666660X is a temperature compensated oscillator designed for radio, satellite, and other communications applications. It provides high frequency accuracy and stability over a wide range of temperatures and is suitable for ISM band applications. The oscillator also features a fast start up time and an auto-calibration system to ensure accuracy.