638L12506A2T

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The 638L12506A2T oscillator is a temperature-compensated clock oscillator (TCXO) that provides reliable, low-distortion and stable frequency clock signals when operated in harsh environmental conditions. It is an integral part of many electronic and electromechanical systems for ensuring precise timing accuracy. This article will discuss the application field and working principle of the 638L12506A2T, and classify it under the oscillators.

Application Field

The 638L12506A2T TCXO is widely used to generate stable and accurate clock signals in a variety of fields, ranging from communications to industrial automation and automotive systems. This oscillator is especially suitable for providing stable and reliable outputs when operating at extreme temperatures. It features a low frequency pull range of ±50ppm max, over the operating temperature range of -40°C to +85°C. As such, it is suitable for a range of applications requiring reliable timekeeping and performance, such as Ground Mobile Radio, Automatic Frequency Control (AFC) and Frequency-Division Multiple Access (FDMA). Furthermore, due to its small miniature profile, the 638L12506A2T can be integrated into compact and space saving designs, making it applicable for low-power battery-operated systems.

Working Principle

The 638L12506A2T works by generating a highly stable and accurate clock signal over the operating temperature range. It functions by converting the energy stored in the capacitance and inductance of the crystal element into a frequency and amplitude of a clock signal. This signal is amplified by the amplifier loop and then outputted as a regular, constant stream of pulses. The amplifier loop is designed to be temperature compensated, meaning that it ensures stability and accuracy in the frequency generated. This is due to its ability to counteract the effects of temperature on the crystal element.

The 638L12506A2T uses a crystal oscillator circuit to achieve reliable and stable frequency performance. The crystal oscillator circuit consists of an amplifier, capacitor and crystal in a feedback loop. When an alternating current passes through the oscillator circuit, energy is stored in the crystal, capacitor and inductor, and the oscillation frequency is dependent on their values. This frequency is amplified by the amplifier and outputted as a regular pulse stream.

The 638L12506A2T TCXO’s temperature-compensated design ensures that the frequency remains stable over a wide operating temperature range. It uses a temperature compensator, which consists of an assortment of components such as transistors, resistors and capacitors. This compensator is designed to sense the temperature of the crystal element and adjust its electrical properties accordingly, thereby counteracting the effects of temperature on the crystal’s frequency.

Conclusion

The 638L12506A2T oscillator is a widely used TCXO for providing reliable and precise timing accuracy in harsh environmental conditions. Its temperature-compensated design ensures that the oscillator produces a stable and accurate clock signal over a wide operating temperature range. Thus, it is suitable for a wide range of applications, from communications to industrial automation, and can be integrated into low-power battery-operated systems. As such, it can be classified under oscillators.

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