SI5369C-C-GQ

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The SI5369C-C-GQ is a 4-output clock generator and fanout buffer with an integrated clock synthesizer. It has a wide frequency operating range and great flexibility, making it suitable for a variety of applications. This article will explain the application field and working principle of the SI5369C-C-GQ.

The SI5369C-C-GQ is designed for use in systems that rely on accurate clock signals, such as telecommunications, audio/video processing, servers, storage systems and medical devices. It is a reliable and cost effective solution for providing multiple clock outputs from a single clock source, saving on board space, design time and cost. The SI5369C-C-GQ has four clock outputs that are adjustable to a wide range of frequencies, making it suitable for a variety of applications. In addition, the device has an integrated jitter attenuator that reduces the generation of clock noise. This makes it ideal for uses where clock performance is critical, such as in telecommunications.

The SI5369C-C-GQ is a frequency synthesizer based on fractional-N frequency synthesis technology. An external-VCO is used to provide a base frequency, which can then be adjusted via the PLL to generate an accurate output clock. The device uses a phase detector, an internal PLL, a programmable loop filter, a voltage-controlled oscillator (VCO) and a divider to create the frequency output. The internal PLL consists of three stages: the reference stage, the phase-detector stage and the VCO stage. The reference stage steps up the reference output frequency to the desired value. The phase detector then compares the output and the reference frequencies using a digital phase-frequency detector. The result of this comparison is then fed to a loop filter which chooses the best response to generate a desired frequency. The VCO stage then uses this information to generate the output clock.

The SI5369C-C-GQ can produce any frequency between 6 to 250MHz with 0.1% accuracy over temperature, regardless of supply voltage fluctuations. The output clock jitter is less than 10ps peak-to-peak. The device also has an integrated jitter attenuator that helps to reduce the generation of clock noise. It also has a variety of other features, such as an enable/disable function, an output enable control, and a power-down control.*

In summary, the SI5369C-C-GQ is a 4-output clock generator and fan out buffer with an integrated clock synthesizer that is suitable for a variety of applications. It is based on fractional-N frequency synthesis technology and has a wide frequency operating range and excellent clock performance. The device has an integrated jitter attenuator and a variety of other features that make it a reliable and cost effective solution.

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