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SNAU145B–MAY 2013–Revised March 2018
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Copyright © 2013–2018, Texas Instruments Incorporated
LMK04826 and LMK04828 User’s Guide
User's Guide
SNAU145B–MAY 2013–Revised March 2018
LMK04826 and LMK04828 User’s Guide
This user’s guide describes how to set up and operate the LMK04826/8 evaluation module (EVM). The
LMK04826/8 is the industry’s highest performance clock conditioner with JEDEC JESD204B support.
Contents
1 Evaluation Board Kit Contents ............................................................................................. 2
2 Quick Start.................................................................................................................... 3
3 PLL Loop Filters and Loop Parameters................................................................................... 9
4 Default TICS Pro Modes for the LMK0482x ............................................................................ 10
5 Using TICS Pro to Program the LMK0482x ............................................................................ 11
6 Evaluation Board Inputs and Outputs ................................................................................... 16
7 Recommended Test Equipment.......................................................................................... 19
Appendix A TICS Pro Usage ................................................................................................... 20
Appendix B Typical Phase Noise Performance Plots....................................................................... 29
Appendix C Schematics......................................................................................................... 39
Appendix D Bill of Materials .................................................................................................... 45
List of Figures
1 Quick Start Diagram......................................................................................................... 3
2 CLKout Page Description Diagram........................................................................................ 4
3 Continuous SYSREF Output ............................................................................................... 6
4 Pulsed SYSREF Output .................................................................................................... 7
5 Clock Outputs Page Setup for SYSREF Output on SDCLKout7...................................................... 8
6 Selecting a Default Mode for the LMK04828 Device.................................................................. 10
7 Selecting the LMK04828B ................................................................................................ 12
8 Loading the Device ........................................................................................................ 12
9 Setting the Default Mode for LMK04828 ................................................................................ 14
10 Setting Digital Delay, Clock Divider, Analog Delay and Output Format............................................. 15
11 TICS Pro - User Controls Page .......................................................................................... 21
12 TICS Pro - Raw Registers Page ......................................................................................... 22
13 TICS Pro - Set Modes Page .............................................................................................. 23
14 TICS Pro - CLKinX Control Page ........................................................................................ 24
15 TICS Pro - SYNC / SYSREF Page ...................................................................................... 25
16 TICS Pro - Clock Outputs Page.......................................................................................... 26
17 TICS Pro - Other Page .................................................................................................... 27
18 TICS Pro - Burst Page..................................................................................................... 28
19 Crystek CVHD-950-122.88 MHz VCXO Phase Noise at 122.88 MHz .............................................. 30
20 LMK04826 DCLKout2, VCO0, 245.76 MHz, Div8, LVPECL20 /w 240- Ω Emitter Resistor,
DCLKoutX_MUX=Divider, IDL=1, ODL=0, Balun = Prodyn BIB-100G.............................................. 31
21 LMK04826 DCLKout2, VCO0, 245.76 MHz, Div8, LVPECL20 /w 240- Ω Emitter Resistor,
DCLKoutX_MUX=Divider, IDL=1, ODL=0, Single Ended............................................................. 32
22 LMK04826 DCLKout2, VCO1, 245.76 MHz, Div10, LVPECL20 /w 240 ohm emitter resistor,
DCLKoutX_MUX=Divider, IDL=1, ODL=0, Balun = Prodyn BIB-100G.............................................. 33
23 LMK04826 DCLKout2, VCO1, 245.76 MHz, Div10 , LVPECL20 /w 240-Ω Emitter Resistor,
DCLKoutX_MUX=Divider, IDL=1, ODL=0, Single Ended............................................................. 34
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