SI5375 Datasheet, PDF (18/54 Pages) Silicon Laboratories – 4-PLL ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR

Si5375
5.7. OSC_P and OSC_N Connection
Figures 7, 8, and 9 show examples of connecting various OSC reference sources to the OSC_P and OSC_N pins.
A crystal may not be used in place of an external oscillator.
Si5374
0.01 F _{OSC-P 100 }
1.2 V
LVDS, LVPECL, CML, etc.
OSC-N
0.01 F
2.5 k
0.6 V
Figure 7. Differential OSC Reference Input Example for Si5375
Si5374
0.01 F _{OSC-P 100 }
1.2 V
LVDS, LVPECL, CML, etc.
OSC-N
0.01 F
2.5 k
0.6 V
Figure 8. Single-Ended OSC Reference Input Example for Si5375
2.5 V
CMOS
XO
2.5 V
150 
82 
150 
10 nF
E5
10 nF
E6
Si5374
OSC-P
OSC-N
1.2 V
0.6 V
Figure 9. Single-Ended, 2.5 V, CMOS XO Connection
18
Rev. 1.0