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
5
Evaluation Board Inputs/Outputs
The following table contains descriptions of the various inputs and outputs for the evaluation
board.
board.
Table 2. LMK041xx Evaluation Board I/O
Connector Name
Input/Output Description
CLKout0 /
CLKout0*,
CLKout1 /
CLKout1*,
CLKout2 /
CLKout2*,
CLKout3 /
CLKout3*,
CLKout4 /
CLKout4*
CLKout4*
Output
Populated connectors.
Differential clock output pairs. See Error! Reference
source not found. for format of the output depending on
part number. If an LVCMOS output, each output can be
independently configured (non-inverted, inverted, tri-state,
and LOW).
On the evaluation board, all clock outputs are AC-coupled
to allow safe testing with RF test equipment.
Differential clock output pairs. See Error! Reference
source not found. for format of the output depending on
part number. If an LVCMOS output, each output can be
independently configured (non-inverted, inverted, tri-state,
and LOW).
On the evaluation board, all clock outputs are AC-coupled
to allow safe testing with RF test equipment.
All LVPECL/2VPECL clock outputs are
terminated to GND with a 120 ohm resistor, one on
each output pin of the pair.
each output pin of the pair.
CLKout4 is configured with an on board balun. Part
number is Mini-circuits‟ ADT2-1T. According to the
ADT2-1T datasheet the 3 dB frequency range is 0.4 to 450
MHz. See Appendix F: Balun Information for more detail.
Fout
Output
Populated connector.
When enabled, buffered VCO output. AC-coupled. The
default configuration on the board contains a 3-dB
attenuator on the Fout signal.
When enabled, buffered VCO output. AC-coupled. The
default configuration on the board contains a 3-dB
attenuator on the Fout signal.
Vcc
Input
Populated connector.
DC power supply for the PCB. Removing R1, R2, or R3
allow for splitting the power to various devices on the
board. For example, the VCXO is powered from the
VccAUXPlane connected via R3.
Note: The LMK04100 Family contains internal voltage
regulators for the VCO, PLL and related circuitry. The
clock outputs do not have an internal regulator. A clean
power supply is required for best performance.
DC power supply for the PCB. Removing R1, R2, or R3
allow for splitting the power to various devices on the
board. For example, the VCXO is powered from the
VccAUXPlane connected via R3.
Note: The LMK04100 Family contains internal voltage
regulators for the VCO, PLL and related circuitry. The
clock outputs do not have an internal regulator. A clean
power supply is required for best performance.
VccLDO
Input
Unpopulated connector.
Vcc input for LDOs on bottom of PCB. Refer to
schematics for more information.
Vcc input for LDOs on bottom of PCB. Refer to
schematics for more information.