402F480XXCJR

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Crystals are naturally occurring materials with atoms arranged in a regular lattice or crystalline structure. They are widely used in physics and engineering applications due to their unique properties. One such application is in the field of frequency control: the 402F480XXCJR crystal is a device that can be used to control the frequency of an electronic circuit.

Description

The 402F480XXCJR is a crystal oscillator device that is used to provide a precise and stable frequency reference, usually for an RF (Radio Frequency) application. This device is commonly used in communications systems, timing applications, and other frequency-control applications. The 402F480XXCJR operates within a frequency range of 10MHz to 400MHz and offers an accuracy of ±10ppm when operating at 12V. It has a fundamental crystal frequency of 4.8 MHz, with an equivalent series resistance (ESR) of around 50 ohms.

Composition

The 402F480XXCJR is composed of a quartz crystal, a capacitor, and a voltage divider. The quartz crystal is the physical part of the device, which is responsible for producing an oscillating electrical signal when driven by an external voltage source. The capacitor helps to filter out external noise, while the voltage divider is used to adjust the external drive voltage to the optimum level for the device.

Working Principle

The 402F480XXCJR crystal works on the principle of piezoelectricity, whereby an electric field applied to a material causes it to vibrate and generate an electric signal. The quartz crystal at the heart of the device is highly piezoelectric and is put into a vibrating state by the external voltage, with the frequency of the vibration determined by the physical properties of the crystal. The resulting oscillating electrical signal is then used to accurately control the frequency of an external circuit. The device also has a temperature compensation mechanism that helps to ensure the optimal frequency operation of the device under varying temperatures.

Applications

The 402F480XXCJR crystal is widely used in communications systems, automotive, and other industrial applications, due to its high accuracy and low cost. The device is well suited for radio frequency applications such as cell phones, as its small size and high level of accuracy make it a highly suitable choice. In addition, the device is also commonly used in timing applications, such as clocks and watches, due to its stability.

Advantages

The 402F480XXCJR crystal has several advantages over other frequency control devices. Firstly, its small size makes it well suited for applications where space is at a premium. Secondly, the device offers high accuracy, with an operating temperature range of -20°C to +80°C, and a tolerance of up to ±10ppm. Finally, the device also offers good power efficiency with an operating current of only 20mA.

Conclusion

The 402F480XXCJR crystal oscillator is a useful device for frequency-control applications such as radio frequency communications and timing. Its small size, low power consumption, high accuracy, and temperature compensation make it well suited for such uses. The device is also relatively inexpensive and easy to use, making it a popular choice for many applications.

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