LECTURE 040 –DIGITAL PHASE LOCK LOOPS (DPLLs)
LECTURE 040 –DIGITAL PHASE LOCK LOOPS (DPLLs)
LECTURE 040 –DIGITAL PHASE LOCK LOOPS (DPLLs)
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Lecture <strong>040</strong> – Digital Phase Lock Loops (<strong>DPLLs</strong>) (09/01/03) Page <strong>040</strong>-39Design Procedure – Continued14.) Specify the type of loop filter. Use the passive lag filter as the others offer nobenefits.15.) Determine ω n .a.) Fast switching (T p ). Go to step 16.b.) DPLL does not lock out when switching from N o f ref to (N o +1) f ref . ∴ ∆ω po