LMX25311146EVAL National Semiconductor, LMX25311146EVAL Datasheet - Page 6
![BOARD EVAL FOR LMX25311146](/photos/39/50/395037/4650768_sml.jpg)
LMX25311146EVAL
Manufacturer Part Number
LMX25311146EVAL
Description
BOARD EVAL FOR LMX25311146
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheets
1.LMX2531LQ1778ENOPB.pdf
(36 pages)
2.LMX25311146EVAL.pdf
(23 pages)
3.LMX25311146EVAL.pdf
(34 pages)
Specifications of LMX25311146EVAL
Main Purpose
Timing, Frequency Synthesizer
Utilized Ic / Part
LMX2531LQ1146E
Silicon Manufacturer
National
Silicon Core Number
LMX2531
Kit Application Type
Clock & Timing
Application Sub Type
Frequency Synthesizer
Kit Contents
Board, Cable, CD
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Lead Free Status / Rohs Status
Supplier Unconfirmed
L M X 2 5 3 1 L Q 1 1 4 6 E
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
Free-Running VCO Phase Noise (Internal Divide by 2 Disabled)
The plots to the left show the true phase noise capability of the
VCO. In order to take these plots, the E5052 phase nose
analyzer was used.
The method was to lock the PLL to the
proper frequency, then disable the EN_PLL, EN_PLLLDO1, and
EN_PLLLDO2 bits. The equipment needs to be able to track
the VCO phase noise to measure in this way, and one can not
let the VCO drift too far off in frequency. If this kind of equipment
is not available, the VCO phase noise can also be measured by
making a very narrow loop bandwidth filter.
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