CDC950DGGRG4

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The CDC950DGGRG4 clock generator is an ideal choice for integrated circuit applications requiring advanced phase-locked loops (PLLs) and frequency synthesis. It is designed to provide ultra-low jitter and optimized phase noise performance, making it perfect for applications such as mobile handsets, digital cameras, servers, modems, cellular base stations, and communications networks. This clock generator is also suitable for use in automotive and aerospace applications that require advanced timing and synchronization.

The CDC950DGGRG4 clock generator integrates a system-level programmable PLL and synthesizer functions into a single package, allowing for greater flexibility and cost-savings. It features an input reference signal for an external clock source and an extended frequency range up to 200 MHz. The clock generator\'s PLL can be used to synthesize output clocks derived from 8MHz or 25MHz reference signals. It can also be used to synthesize a delay-locked loop (DLL) to clock any processor system. The clock generator\'s PLL is optimized to provide ultra-low jitter performance, enabling it to work well with high-speed video and audio applications.

The CDC950DGGRG4 clock generator also features an integrated adjustable spread spectrum control. This control allows for efficient system performance with reduced electromagnetic interference. The clock generator\'s design also facilitates programmable clock synthesis and output frequencies, providing the flexibility needed for advanced applications. The clock generator also features an output cycle-to-cycle jitter of 6ps, making it extremely reliable and accurate for critical applications.

The working principle of the CDC950DGGRG4 clock generator is based on a PLL comprised of a phase detector, voltage-controlled oscillator, and divide-by-N counter. The phase detector monitors the phase difference between the reference input signal and the feedback signal from the voltage-controlled oscillator (VCO). If the phase difference between the two signals is too great, the phase detector adjusts the frequency output of the VCO to minimize the phase difference. This process, known as PLL based voltage-controlled oscillator suppression, reduces the amount of output jitter while achieving the desired frequency accuracy.

The CDC950DGGRG4 clock generator also offers a variety of advanced features, such as an adjustable spread spectrum control for minimizing system level emissions. The internal Low-Jitter Crystal Oscillator (LJCO) provides exceptionally low output jitter, up to 6 ps, enabling system level performance and reliability. The CDC950DGGRG4 also features high-frequency isolation and multiple output buffers, providing additional isolation and noise suppression for delicate system components.

The CDC950DGGRG4 clock generator is an ideal choice for applications that require advanced PLLs and frequency synthesis. Its integrated PLL and synthesizer functions ensure efficient system performance, low output jitter, adjustable spread spectrum control, and reliable frequency accuracy, making it perfect for a variety of integrated circuit applications.

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