ECX-L37CM-16.000

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Oscillators

Oscillators are components which can produce repetitive signals in a regular and predictable manner. They are used in electronic circuits to determine frequency, timing, or amplitude of a signal, and the most commonly used type is a quartz crystal oscillator. One example of a quartz crystal oscillator is the ECX-L37CM-16.000.

Application Field and Working Principle of ECX-L37CM-16.000

The ECX-L37CM-16.000 is a low-profile SMD crystal with a frequency stability up to ±25 ppm over the temperature range of -20°C to +70°C. It is widely used in timing applications such as cellular phones, digital cameras, GPS receivers, and other consumer electronics, which require accuracy and stability. It operates with a supply voltage of 3.3V and a current of 1.4mA.

The working principle of these oscillators is based on the properties of quartz crystal, which vibrates at a specific frequency when a potential is applied across it. This crystal has an elecro-mechanical resonant frequency due to its shape and temperature. This frequency is determined by the thickness and length of the quartz plate. When a potential is applied across the crystal, a small alternating current is produced, which is the oscillation frequency. The frequency of this oscillation depends on the characteristics of the quartz plate.

The ECX-L37CM-16.000 employs a temperature compensated oscillator (TCXO) to provide even better stability. This TCXO technology uses two quartz plates on which the metallic electrodes are placed. To obtain a stable and accurate frequency, the metallic electrodes are heated up or cooled down by an external signal. This results in under-damped oscillations, which are decoupled via a low-pass filter and then conditioned with an optimized gain to produce a reliable oscillation.

To further ensure stability, the ECX-L37CM-16.000 uses a process called shock-proofness, which avoids shock-induced frequency shifts. The base of the crystal is temperature-compensated to reduce the amount of thermal expansion which can cause frequency shifts. The crystal package is also vibration-proof, which helps to maintain frequency stability.

Overall, the ECX-L37CM-16.000 is an ideal oscillator for timing applications in the fields of cellular phones, digital cameras, and other consumer electronics. It has a frequency stability up to ±25 ppm over the temperature range of -20°C to +70°C and uses a temperature compensated oscillator (TCXO), shock-proofness, and vibration-proof features to ensure stability. It is an ideal choice for applications requiring accuracy and stability.

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