AX7DCF2-187.5000T Crystals, Oscillators, Resonators

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Oscillators play an significant part in many electronic applications. AX7DCF2-187.5000T is a common popular oscillator type, whose application field and working principle is analysed below.

AX7DCF2-187.5000T is a kind of temperature compensated crystal oscillator (TCXO). Its circuit basically consists of a quartz crystal, a temperature compensating circuit, an amplifier, and other supporting elements. The application of it mainly covers handheld terminals, base station, low-power AM transceiver module etc. Besides, it can also be used in instrumentation, test equipment, system clocks, military and other fields.

The working principle of AX7DCF2-187.5000T can be described in this way: when a certain AC signal is applied to the quartz crystal, the vibration frequency of the crystal is dependent on the series resonance frequency of the electrical circuit in which it is mounted. With respect to temperature variation, the resonance frequency of the crystal is changed, resulting in a change in the resonant frequency of the entire circuit, which affects the working frequency of the oscillator, thus, the output frequency is affected by temperature. The temperature compensating circuit offsets the change in frequency caused by temperature, and the circuit parameters (such as damping resistance, capacitor, inductor, etc.) work to adjust the temperature compensation characteristics of the temperature compensating circuit, thus achieving the purpose of temperature compensation of the oscillator.

In order to ensure the stable performance and environmental adaptability of the oscillator, AX7DCF2-187.5000T adopts advanced design techniques such as reference voltage, frequency multiplication technology and temperature compensation technology. These technologies provide the oscillator with good temperature stability, wide voltage range and excellent temperature noise characteristics, and therefore make it widely used in the above-mentioned application fields.

In summary, AX7DCF2-187.5000T is a temperature-compensated crystal oscillator, and its application fields mainly cover handheld terminals, base station, low-power AM transceiver modules, instrumentation, test equipment, system clocks, military and other fields. Its working principle is that when certain AC signal is applied to quartz crystal, the vibration frequency of the crystal is affected by the series resonance frequency of the electrical circuit, resulting in a change in the resonant frequency of the entire circuit which is then counterbalanced by the temperature compensating circuit, thus achieving the purpose of temperature compensation.

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