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MCQ Practice Question

In a simple PLL frequency synthesizer with divide-by-N feedback, a 100 kHz reference and N=50 produce an output frequency of approximately?

A2 kHz
B100 kHz
C5 MHz
D50 MHz

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Correct Answer: C. 5 MHz

Explanation: In lock, the divided output equals the reference, so fout/N=fref and fout=Nfref=50×100 kHz=5 MHz.

Reference: Standard analog electronics: PLL frequency synthesis

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