CE3391-51.840

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Oscillators play an important role in the operation of electronic systems, ranging from radio communications to precision timing and synchronization mechanisms. Of the numerous oscillator configurations available, the CE3391-51.840 oscillator is an often-used choice for its performance, flexibility, and simplicity. This article will describe the CE3391-51.840 oscillator, its application field, and its working principle.

Description

The CE3391-51.840 oscillator is a voltage-controlled quartz crystal oscillator (VCXO). It is designed to operate in the frequency range of 51.840 MHz, with a tolerance of +/-5 ppm, at a supply voltage of 3.3V. Its oscillation frequency is determined by a quartz crystal and controlled by an external voltage signal, and can be adjusted over a range of +/-50 ppm.

The quartz crystal allows the CE3391-51.840 oscillator to operate with remarkable accuracy and stability over its temperature range of -40 to 85 degrees Celsius. It also has excellent phase noise performance, with its typical phase noise level of -90 dBc/Hz at 10 kHz offset. Its compact size, measuring only 6.1 x 6.1mm, makes it ideal for many applications where space is at a premium.

Applications

The CE3391-51.840 oscillator is widely used in several applications due to its performance, flexibility, and compact size. It is well suited for radio transmission applications due to its excellent phase noise performance and wide frequency range. Telecommunications systems, such as cellular networks, also make use of the oscillator, as do many GPS receiver systems. Additionally, its high accuracy and stability make it suitable for precision timing and synchronization mechanisms.

Working Principle

The CE3391-51.840 oscillator operates on the principle of a quartz crystal. At its heart is a quartz crystal, which vibrates at a precise frequency when an alternating current is applied. This frequency determines the oscillation frequency of the oscillator. The frequency of the crystal can be adjusted by applying an external voltage signal, which in turn alters the stiffness of the quartz crystal and thus the frequency of its oscillation. This allows for the frequency of the oscillator to be precisely adjusted over a range of +/-50 ppm.

In addition to its voltage-controlled quartz crystal, the CE3391-51.840 oscillator also contains a frequency tracking circuit, which is responsible for mimicking the frequency of the external voltage control signal to ensure stable and consistent oscillation frequency. A temperature sensor is also included, which helps to maintain the desired oscillation frequency even under varying temperature conditions.

Conclusion

The CE3391-51.840 oscillator is well-suited for a variety of applications due to its performance, flexibility, and simplicity. Operating on the principle of a voltage-controlled quartz crystal, the oscillator is capable of precisely adjusting its frequency over a range of +/-50 ppm. It also has excellent phase noise performance, making it ideal for radio transmission and precision timing applications. Finally, its small size makes it a great choice for applications where space is at a premium.

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