CDCE925PWR

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CDCE925PWR belongs to a family of programmable synthesizers, frequency multipliers and dividers for clock and data communication applications. These devices integrate a phase-locked loop (PLL) with multiple stages of advanced analog circuitry. The product family also includes chip-scale packaging with integrated loop filter components, making it easy to integrate into a wide range of applications. This article will provide an overview of the application field and working principle of CDCE925PWR.

Application Field of CDCE925PWR

The CDCE925PWR is primarily used in clock and data communication applications, such as Ethernet, Fibre Channel, and USB systems. The device can be used to synthesize high-frequency clocks and data signals with high accuracy, allowing system designers to reduce the number of clock sources they need. Additionally, its low-power consumption and small form factor make it well-suited for integration into desktop, laptop, and mobile devices. The device also offers several features such as programmable frequency synthesis, clock jitter cleaning, output skew control, and wide-range of control modes, making it an ideal choice for designers looking for a cost-effective and power-efficient solution for their clock and data communication applications.

Working Principle of CDCE925PWR

The CDCE925PWR is a versatile, programmable synthesizer. It uses a Phase-Locked Loop (PLL) to generate clock signals with high frequency accuracy, resulting in improved system performance. The device is composed of multiple stages of advanced analog circuitry, including a voltage-controlled oscillator (VCO), a frequency divider,an analog loop filter, and a phase/frequency detector (PFD).

The device works by first receiving an external reference clock signal with a frequency of Fref, which is typically derived from a Quartz crystal oscillator. This signal is then divided down to produce a lower frequency signal that is fed into the PLL core. The PLL core then generates a higher-frequency signal (Fvco) which is then divided down to the desired output frequency. This signal is then fed into the analog loop filter, which shapes and smoothes the signal, reducing jitter and improving signal accuracy. Finally, the signal is sent to the outputs where it can be used to drive clock or data applications.

The device also includes several other features to improve performance, such as clock jitter cleaning, output skew control, spread spectrum mode, and programmable frequency synthesis. The frequency synthesis can be used to generate multiple frequencies all within the same device, allowing it to be used in multiple applications with different frequenc

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