Texas Instruments LMK04131 Clock Jitter Cleaner with Cascade PLL LMK04131EVAL/NOPB LMK04131EVAL/NOPB 데이터 시트
제품 코드
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
34
2. Disconnect Crystal RF path and connect VCXO RF path
a. Remove resistors R15 and R31.
b. Install 0.1 uF capacitors in C31 and C43.
b. Install 0.1 uF capacitors in C31 and C43.
Figure 13
3. Connect charge pump output from PLL1 to VCXO Loop Filter (A1) and VCXO.
a. Remove R37 and install a 0 ohm resistor in R39. This resistor can be “switched”
between the two footprints.
Figure 14