day4_amShort Course On Phase-Locked Loops and Their Applications Day 4, AM Lecture Digital Frequency SynthesizersMichael Perrott August 14, 2008Copyright 2008 by Michael H. Perrott All rights reserved.Why Are Digital Phase-Locked Loops Interesting? PLLs are needed for a wide range of applications- Communication systems (both wireless and wireline) - Digital processors (to achieve GHz clocks) - Phase noise can limit wireless transceiver performance - Jitter can be a problem for digital processors - Analog building blocks on a mostly digital chip pose design and verification challenges - The cost of implementation is becoming too high …Can digital phase-locked loops offer excellent performance with a lower cost of implementation?Performance is importantThe standard analog PLL impl……
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