LMX2430EVAL National Semiconductor, LMX2430EVAL Datasheet - Page 4

• Manufacturer Part Number: LMX2430EVAL
• Description: EVALUATION BOARD FOR LMX2430
• Manufacturer: National Semiconductor
• Series: PLLatinum™r

Specifications of LMX2430EVAL

• Main Purpose: Timing, Frequency Synthesizer
• Utilized Ic / Part: LMX2430
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Not Compliant
• Other names: *LMX2430EVAL

1.1.2
LMX2430SLEFPEB
1. Connect the RF_OUT/IF_OUT output port to the input of the spectrum analyzer for phase
2. Connect a 10 MHz reference oscillator to the REF_IN input port. A high quality reference
3. Plug the DB25 connector end of the cable assembly to the parallel port of the PC.
4. Verify that three jumper blocks are in place so that the RF and IF sides as well as their
5. Turn the DC power supply ON and adjust the voltage output to 3.0V. Turn the DC power
6. Connect the DC power supply output to the V
7. Run the CodeLoader software for LMX2430SLE register programming. Ensure proper
Connection And Setup
noise and reference spur measurement or to the input of the modulation domain analyzer
for lock time measurement.
source such as a TCXO is preferred to achieve an accurate and low noise measurement.
Depending on the reference source used, the 51Ω terminating resistor, designated R10,
can be removed when appropriate.
REF_IN input port and set the output frequency to 10 MHz. Keep the 51Ω resistor if the
signal generator is used. Another option is to use the 10 MHz reference output from the
rear panel of the spectrum analyzer.
Connect the other end of the cable to the on-board 10 Pin Header, JP2. Refer to
Appendix E for more details. Alternatively, refer to the CodeLoader 2 Operating
Instructions
http://wireless.national.com/.
corresponding VCOs have power to them. Refer to the schematic in Appendix A for
proper placement of the jumper blocks.
supply OFF.
power supply ON.
port setup, and that the frequency of the reference source on the CodeLoader matches
that actually used for the board. Refer to Appendix E for more details.
from
LMX2430SLE EVALUATION BOARD OPERATING INSTRUCTIONS
National
Semiconductor’s
February 3,2006
Alternatively, connect a signal generator to the
cc
port of the evaluation board. Turn the DC
Wireless
Communications
website:
2