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LMK00301 Evaluation Board
User Guide
National Semiconductor Corporation
User Guide
20 September 2011
General Description
This user guide describes how to set up and operate the LMK00301 evaluation board kit (EVK). The LMK00301 is
a 3-GHz, 10-output differential fanout buffer intended for high-frequency, low-additive jitter clock/data
distribution and level translation. The EVK enables the user to verify the functionality and performance
specifications of the device. Refer to the LMK00301 datasheet for the functional description and specifications
of the device.
Features
Low-noise clock fan-out via two banks of five differential outputs and one LVCMOS output
Selectable differential output type (LVPECL, LVDS, HCSL, or Hi-Z)
3:1 input multiplexer with two universal input buffers and one crystal oscillator interface
DIP switch control of device configuration
Single 3.3 V or dual 3.3 V/2.5 V operation using onboard LDO regulators or direct supply inputs
Flexible input and output interface with controlled-impedance traces and edge SMA connectors
Figure 1. LMK00301 Evaluation Board Photo
MUX
SYNC
CLKoutA0
CLKoutA0*
CLKoutA1
CLKoutA1*
CLKoutA2
CLKoutA2*
CLKoutA3
CLKoutA3*
CLKoutA4
CLKoutA4*
CLKoutB0
CLKoutB0*
CLKoutB1
CLKoutB1*
CLKoutB2
CLKoutB2*
CLKoutB3
CLKoutB3*
CLKoutB4
CLKoutB4*
CLKin0
CLKin0*
CLKin1
CLKin1*
OSCin
OSCout
REFout_EN
CLKoutA_TYPE[1:0]
CLKoutB_TYPE[1:0]
CLKin_SEL[1:0]
REFout
V
CC
V
CCO
GND
Figure 2. LMK00301 Functional Block Diagram
