LMK04000BEVAL/NOPB National Semiconductor, LMK04000BEVAL/NOPB Datasheet - Page 10

• Manufacturer Part Number: LMK04000BEVAL/NOPB
• Description: BOARD EVAL PRECISION CLOCK PLL
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LMK04000BEVAL/NOPB

• Main Purpose: Timing, Clock Conditioner
• Embedded: No
• Utilized Ic / Part: LMK04000
• Primary Attributes: 122.88 MHz VCXO
• Secondary Attributes: Integrated PLL & VCO
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMK04000BEVAL; LMK04000BEVAL

Note: PLL Loop Bandwidth is a function of Kφ, Kvco, N as well as loop components. Changing Kφ and N will
change the loop bandwidth.
CodeLoader and the installation instructions may be downloaded from National’s Precision Clock Conditioner
web site:
http://www.national.com/analog/timing/codeloader
For basic operation:
1. Connect a low noise 3.3 V power supply to the VCC SMA connector. If there is no jumper between
2. Connect the programming interface to the board using one of the following options:
VccSMA and VccAUXPlane, either install a jumper or connect a 3.3VDC supply to the VCCAux SMA
Connector located at the top left of the board.
C3 = 50 pF
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Option 1, LPT cable: Connect the PC directly to the evaluation board with the LPT-to-uWire
cable supplied with the board, plugging the cable into an LPT port on the computer and then
the 10 pin ribbon connector to the 10-pin uWire header located on the lower left corner of the
evaluation board. The cable can be removed after programming to minimize noise and
EMI.
Option 2, USB cable with adaptor board: Connect the PC directly to the USB interface board
using the USB cable. Connect the USB interface board to the evaluation board with the short
L M K 0 4 0 X X
Figure 6. Evaluation Board Power Connectors
C4 = 10 pF
E V A L U A T I O N
Quick Setup
R3 = 0.6k ohms
10
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
R4 = 0.2k ohms