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Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers

The PL620-20DC is a widely used clock generator, phase-locked loop (PLL) and frequency synthesizer device which has a number of applications in many sectors. The device can be used to generate accurate clock frequencies in a variety of different environments, as well as to achieve frequency synthesis. In this article, we will explore the PL620-20DC\'s application fields and its working principle.

Application Fields

The PL620-20DC is suitable for use in applications such as the generation of clock frequencies in laboratory and industrial environments, in telecommunications (internet, broadcasting and cellular), and in communications infrastructure systems. It can also be used to generate audio-video signals in TV and sound systems, as well as in industrial instrumentation and control systems. In addition, it is suitable for use in medical equipment and for generating digital signals in computers and related products.

The device can be used to generate frequencies from 10 Hz to 1.5 GHz, and is capable of providing a low jitter output. It also boasts a low current consumption and a low part count, making it well suited for use in a wide range of applications.

Working Principle

The PL620-20DC device works by phase-locked loop technology, which uses an electronic circuit with a voltage-controlled oscillator to maintain a set frequency relative to a given input signal. The input signal is typically supplied by an external source such as a reference clock, and is used to set the output frequency. The oscillator uses the difference between the two frequencies as an error signal to adjust its parameters, so that it is locked to the input frequency. This process allows the device to generate a high quality output signal at the desired frequency.

The PL620-20DC features a low jitter frequency synthesizer system, meaning that the jitter level of the output signal remains low even in high frequency and high duty cycle situations. The device also includes a DC variable gain amplifier (VGAMP), which allows the user to adjust the gain of the output signal in order to improve its signal-to-noise ratio (SNR). This feature is especially useful in applications where a high SNR is required.

Conclusion

The PL620-20DC is a versatile device which is suitable for use in a wide range of applications, including laboratory, industrial and broadcast environments. It is capable of generating accurate clock frequencies and frequency synthesis signals, and features a low jitter frequency synthesizer system and a variable gain amplifier. This makes it an ideal choice for use in a range of applications where an accurate and reliable clock signal is required.

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