Texas Instruments LMK04131 Clock Jitter Cleaner with Cascade PLL LMK04131EVAL/NOPB LMK04131EVAL/NOPB Datenbogen
Produktcode
LMK04131EVAL/NOPB
L M K 0 4 1 X X - R E V 3 E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S
SNLU099
37
2. Disconnect VCXO RF path and connect Crystal RF path
a. Install 0 ohm resistors R15 and R31.
b. Remove 0.1 uF capacitors in C31 and C43.
b. Remove 0.1 uF capacitors in C31 and C43.
Figure 17
3. Connect charge pump output from PLL1 to Crystal Loop Filter (B1) and Crystal
a. Remove R39 and install a 0 ohm resistor in R37. This resistor can be “switched”
between the two footprints.
Figure 18