Design and Applications of Delay Locked Loop
Design and Applications of Delay Locked Loop
Design and Applications of Delay Locked Loop
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Characteristic DLL PLL<br />
Frequency<br />
multiplying<br />
No<br />
yes<br />
Architecture simple complex<br />
transfer function firs order second order<br />
stabile absolute conditional<br />
locking time short long<br />
delay range <strong>of</strong><br />
regulation<br />
limited<br />
unlimited<br />
tracking jitter small large<br />
PLL<br />
2<br />
, DLL<br />
2<br />
∆t ∆t<br />
∆t<br />
α ≅<br />
ω<br />
2ω<br />
ref<br />
2<br />
2<br />
2<br />
PLL = α ⋅ ∆t VCO<br />
PLL<br />
∆t<br />
2<br />
= N ⋅ ∆<br />
DLL t d<br />
2
Change language