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Noise and spur reduction technique in fractional-N PLL
Background Delta-Sigma fractional-N PLL plays an important role in modern electronic systems. Unlike integer-N PLLs, fractional-N PLLs allow synthesis of frequencies that are a fraction of the reference frequency. Thus, a fractional-N PLL can use a higher reference frequency than an integer-N PLL for the same frequency resolution. It allows a wider...
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