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SNAU136 Datasheet(PDF) 1 Page - Texas Instruments

Part No. SNAU136
Description  The Texas Instruments LMX2581EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMX2581 Wideband Frequency Synthesizer.
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SNAU136 Datasheet(HTML) 1 Page - Texas Instruments

 
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User’s Guide
November 2012
SNAU136,
LMX2581EVM User’s Guide
November 2012
SNAU136A, LMX2581
User’s Guide
1
Contents
1.
INTRODUCTION ............................................................................................................................................................ 1
2.
SETUP ........................................................................................................................................................................... 2
INPUT/OUTPUT CONNECTOR DESCRIPTION ......................................................................................................................................... 2
LOOP FILTER VALUES....................................................................................................................................................................... 3
INSTALLING THE EVM SOFTWARE...................................................................................................................................................... 3
BURNING IN THE CRYSTAL OSCILLATOR ............................................................................................................................................... 3
USING THE EVM SOFTWARE ............................................................................................................................................................ 4
3.
BOARD LAYER STACKUP................................................................................................................................................ 8
4.
SCHEMATIC................................................................................................................................................................... 9
5.
BILL OF MATERIALS..................................................................................................................................................... 10
6.
MEASURED PERFORMANCE DATA .............................................................................................................................. 11
PHASE NOISE............................................................................................................................................................................... 11
FRACTIONAL SPURS....................................................................................................................................................................... 13
FRACTIONAL SPURS (IMPACT OF VARIOUS SETTINGS) .......................................................................................................................... 17
OUTPUT POWER .......................................................................................................................................................................... 22
LOCK TIME (ANALOG PLL LOCK TIME)............................................................................................................................................. 24
EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS............................................................................................. 25
1.
Introduction
The Texas Instruments LMX2581EVM evaluation module (EVM) helps designers evaluate the operation and
performance of the LMX2581 Wideband Frequency Synthesizer.
The EVM contains one Frequency Synthesizer (See Table 1).
Table 1: Device and Package Configurations
CONVERTER
IC
PACKAGE
U1
LMX2581
LQA32A


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