Related Manuals for National Semiconductor LMX2531LQ1226E
Summary of Contents for National Semiconductor LMX2531LQ1226E
- Page 1 LMX2531LQ1226E Evaluation Board Operating Instructions National Semiconductor Corporation Timing Devices Business Group 10333 North Meridian Suite 400 Indianapolis, IN 46290 LMX2531LQ1226EFPEB Rev 3.31.2008...
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Page 2: Table Of Contents
L M X 2 5 3 1 L Q 1 2 2 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 Table of Contents ........................ -
Page 3: Loop Filter
10 MHz. • Set up the CodeLoader software Select the proper part from the menu as Select Part->PLL+VCO->LMX2531LQ1226E Select the proper mode from the Mode menu Load the part by pressing Ctrl+L or selecting Keyboard Controls->Load Device from the menu •... -
Page 4: Troubleshooting
L M X 2 5 3 1 L Q 1 2 2 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 Troubleshooting Problem Corrective Actions... -
Page 5: Phase Noise
L M X 2 5 3 1 L Q 1 2 2 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 Phase Noise... -
Page 6: Free-Running Vco Phase Noise (Internal Divide By 2 Disabled)
L M X 2 5 3 1 L Q 1 2 2 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. -
Page 7: Free-Running Vco Phase Noise (Internal Divide By 2 Enabled)
L M X 2 5 3 1 L Q 1 2 2 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 Enabled) The plots to the left show the true phase noise capability of the VCO. -
Page 8: Fractional Spurs (Internal Divide By 2 Disabled)
L M X 2 5 3 1 L Q 1 2 2 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 Fractional Spurs (Internal Divide by 2 Disabled) Fractional Spur at 250 kHz offset at a worst case frequency of 1190.25 MHz is... -
Page 9: Fractional Spurs (Internal Divide By 2 Enabled)
L M X 2 5 3 1 L Q 1 2 2 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 Fractional Spurs (Internal Divide by 2 Enabled) Spur at 250 kHz offset at a frequency of 595.125 MHz is –80.4 dBc. -
Page 10: Integer Spurs (Internal Divide By 2 Disabled)
L M X 2 5 3 1 L Q 1 2 2 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 Integer Spurs (Internal Divide by 2 Disabled) Spur at 10 MHz offset for a frequency of 1184 MHz is below the spectrum... -
Page 11: Integer Spurs (Internal Divide By 2 Enabled)
L M X 2 5 3 1 L Q 1 2 2 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 Integer Spurs (Internal Divide by 2 Enabled) Spur at 10 MHz offset for a frequency of 592 MHz is below the spectrum analyzer... -
Page 12: Codeloader Settings
L M X 2 5 3 1 L Q 1 2 2 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 CodeLoader Settings CodeLoader runs many devices. - Page 13 L M X 2 5 3 1 L Q 1 2 2 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 There can be different modes defined for a particular part.
- Page 14 L M X 2 5 3 1 L Q 1 2 2 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 The Bits/Pins tab displays many of the bits used to program the part.
- Page 15 L M X 2 5 3 1 L Q 1 2 2 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 The Registers tab shows the literal bits that are being sent to the part.
- Page 16 L M X 2 5 3 1 L Q 1 2 2 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 The port setup tells CodeLoader what information goes where.
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Page 17: Schematic
L M X 2 5 3 1 L Q 1 2 2 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 Schematic POWER VccVCO... -
Page 18: Bill Of Materials
L M X 2 5 3 1 L Q 1 2 2 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 Bill of Materials Bill of Materials LMX2531_LF... -
Page 19: Top Layer
L M X 2 5 3 1 L Q 1 2 2 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 Top Layer... -
Page 20: Mid Layer 1 "Ground Plane
L M X 2 5 3 1 L Q 1 2 2 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 Mid Layer 1 "Ground Plane"... -
Page 21: Mid Layer 2 "Power
L M X 2 5 3 1 L Q 1 2 2 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 Mid Layer 2 "Power"... -
Page 22: Bottom Layer "Signal
L M X 2 5 3 1 L Q 1 2 2 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 Bottom Layer "Signal"... -
Page 23: Top Build Diagram
L M X 2 5 3 1 L Q 1 2 2 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 Top Build Diagram... -
Page 24: Important Notice
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.