Description
APPLICATIONS:
Gigabit ethernet Router Network switches SAN Instrumentation Fibre channel
FUNCTIONAL BLOCK DIAGRAM
OE VCO DIVIDE 1/N
REF
PHASE DETECTOR
CHARGE PUM P
LOO P FILTER
VCO
Q0
Q1 0 Q2 1 Q3 X2 CRYSTAL O SCILLATO R X1
SELEC
Features
- 3V to 3.6V operating voltage 50MHz to 160MHz output frequency range Input from fundamental crystal oscillator or external source Internal PLL feedback (loading feedback output relative to other outputs, adjusts propagation delay between REF inputs and outputs) Select inputs (S[1:0]) for FB divide selection (multiply ratio of 2, 3, 4, 4.25, 5, 6, 6.25, and 8) Low jitter PLL bypass for testing and power-down control.