LFXTAL078521BULK

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Crystals are largely used to control the frequency in oscillators, filters and virtually all radio communication systems. Among the various crystal designs available in the market, the LFXTAL078521BULK is one type of communication grade quartz crystal that is popular to use. The application field and working principle of this crystal is discussed further in this article.

Application Field

The LFXTAL078521BULK is an ultra-low profile SMD ceramic package which has an AT cut design and works over a frequency range of 24.576MHz to 50.688MHz. The AT cut design of this crystals increases its frequency range over other cuts, while the SMD ceramic package with its low profile makes it a great option for space constrained applications.

The LFXTAL078521BULK is mainly used for wireless applications like Bluetooth, GPS, radio transceivers, wireless LAN and CPHY wireless communication systems. It is also used in various military, medical, and aerospace applications which require crystal oscillators of high stability over a wide range and temperature range.

Working Principle

Crystals used in communication systems usually operate in either fundamental or overtone modes. The LFXTAL078521BULK operates in the overtone mode, which is a more efficient mode than the fundamental mode. The crystal operates at a frequency that is some multiple of the fundamental frequency, thereby reducing the size of the crystal while maintaining the same frequency stability.

The LFXTAL078521BULK comprises of a quartz crystal and a holder with two electrodes. When an electric signal is applied across the electrodes, the quartz crystal starts to oscillate as it behaves like a capacitor. This oscillation then creates an alternating current which is then amplified to drive the oscillator. The frequency of this oscillator is determined by the capacitance-inductance (LC) circuit that is created with the quartz crystal.

The AT cut design of the LFXTAL078521BULK gives it a wide range of frequencies along with high frequency stability. The crystal also has a low profile design, which results in a low power consumption for the oscillator. This makes it ideal for applications like battery operated devices.

The LFXTAL078521BULK is a highly stable crystal which is ideal for various communication systems. It has wide frequency range, low power consumption and a low profile design which makes it ideal for space constrained applications.

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