Datasheet

SNAU118
LMK01801BEVAL Evaluation Board Operating Instructions
12
Evaluation Board Inputs/Outputs
The following table contains descriptions of the various inputs and outputs for the evaluation
board.
Table 3. LMK01801 Evaluation Board I/O
Connector Name Input/Output Description
CLKout0 /
CLKout0*,
CLKout2 /
CLKout2*,
CLKout4 /
CLKout4*,
CLKout6 /
CLKout6*,
CLKout8 /
CLKout8*,
CLKout9/
CLKout9*,
CLKout10 /
CLKout10*,
CLKout11/
CLKout11*,
CLKout12 /
CLKout12*,
CLKout13 /
CLKout13*
Output
Populated connectors.
Differential clock output pairs. All outputs are configured
in LVPECL mode.
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 240 ohm resistor, one on
each output pin of the pair.
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.
Note: The LMK01801 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.
Vcc2 Input
Unpopulated connector.
Vcc input to power the output planes separately from the
Aux Plane. Refer to schematics for more information.