TCO-7106X1A4 66.6600M0

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Oscillators are an essential device in many electronic systems and their application fields and working principles differ depending on the oscillator model. This paper will focus on the TCO-7106X1A4 66.6600M0 oscillator and look at its application fields and working principles.

Application Fields

The TCO-7106X1A4 66.6600M0 oscillator is a VCXO (Voltage-Controlled Crystal Oscillator). VCXOs are generally used in applications which require frequency adjustment for an output frequency with wide tolerance levels. Consequently, it is commonly used for clock and timing signal applications as the VCXO allows for a large frequency range that can be finely adjusted. Additionally, it is a low-noise oscillator and operates in temperature ranges from -40 to 85°C, so it is commonly used in portable and consumer electronics applications.

Working Principle

The TCO-7106X1A4 66.6600M0 oscillator is a type of voltage-controlled crystal oscillator (VCXO) which uses a crystal as the resonating element and a voltage to control the frequency output. The operating principle of a VCXO is based on the concept of a quartz crystal oscillator, which consists of a parallel-resonant tank circuit combined with an amplifier. A quartz crystal is electrically connected to a parallel-resonant tank circuit and the frequency can be adjusted by supplying a control voltage to the tank circuit. The control voltage will cause the moving plate of the capacitor to move, and the capacitance of the tank circuit will change. Since the quartz crystal has a highly temperature-stable resonance frequency, the total resonant frequency of the tank ciruit will also change with the change in capacitance. Thus the frequency can be adjusted by applying a control voltage.

The output from the TCO-7106X1A4 66.6600M0 oscillator follows the ‘at rest’ initial frequency FC, which is the main frequency of oscillation. The output frequency, however, can be varied by adjusting the control voltage Vcc. The VCXO also offers pullability of ±50ppm (parts per million). This means that the CVs (Control Voltages) can provide ±50ppm of frequency tuning range without altering the initial frequency. The maximum tuning range of the oscillator is 9.3KHz~12KHz and the phase noise is -108dBc/Hz at 10KHz offset frequency.

Conclusion

In conclusion, the TCO-7106X1A4 66.6600M0 oscillator is an essential device in many electronic applications, especially those requiring a wide tolerance level for frequency adjustment. It is a VCXO which uses a quartz crystal as the resonating element and a voltage to control the frequency output, and its maximum tuning range is 9.3KHz~12KHz. This oscillator offers a pullability of ±50ppm and its phase noise is -108dBc/Hz at 10KHz offset frequency. While its application fields and working principle are discussed in this paper, other model oscillators have their own unique structures and operation mechanisms.

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