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This user guide describes how to set up and operate the LMK00105 evaluation board kit (EVK). The
LMK00105 is a high performance, low noise, low voltage CMOS fanout buffer. The core voltage can be
2.5 or 3.3 volts, while the power supply for the outputs can be selected from: 1.5 V, 1.8 V, 2.5 V, or 3.3 V,
provided that it does not exceed the core supply voltage™
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1
Introduction
2
Quick Start Setup
2.1
Quick Start Description
3
Signal Path and Control Switches
4
Power Supplies
5
Clock Inputs
5.1
Crystal Oscillator Interface
5.2
Configuring OSCin for a Crystal Mode
6
Clock Outputs
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7
Schematics
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8
PCB Layout
9
Bill of Materials
1
LMK00105 Quick Start Setup
2
Schematic Sheet 1
3
Schematic Sheet 2
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4
PCB Top
5
Bottom Side (Layer Inverted, Not to Scale)
1
Part Description
2
Default Clock Output Modes / Interfaces
3
Input Selection (0=SW OFF, 1=SW ON)
4
Output Enable Selection (0=OFF, 1=ON)
5
Power Supply Configuration
6
Bill of Materials
SNLU097A – March 2012 – Revised July 2019
Submit Documentation Feedback
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Copyright © 2012–2019, Texas Instruments Incorporated
SNLU097A – March 2012 – Revised July 2019
LMK00105 User's Guide
Contents
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List of Figures
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List of Tables
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User's Guide
LMK00105 User's Guide
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Summary of Contents for Texas Instruments LMK00105BEVAL/NOPB

  • Page 1 Input Selection (0=SW OFF, 1=SW ON) ................Output Enable Selection (0=OFF, 1=ON) ....................Power Supply Configuration ....................... Bill of Materials SNLU097A – March 2012 – Revised July 2019 LMK00105 User’s Guide Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 2 Differential CLKin Input Select DIP Switches CLKout0- CLKout2- CLKout4 CLKout1 Single Ended Oscillator Input Figure 1. LMK00105 Quick Start Setup LMK00105 User’s Guide SNLU097A – March 2012 – Revised July 2019 Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 3 All control pins are configured with the control switch, S3. The output enable logic is shown in Table Table 4. Output Enable Selection (0=OFF, 1=ON) CLKout ENABLE MODE S1[3]-OE Disabled/Hi-Z Enabled SNLU097A – March 2012 – Revised July 2019 LMK00105 User’s Guide Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 4 All clock outputs are LVCMOS. In the case that not all outputs are used, any unused outputs should be left floating. LMK00105 User’s Guide SNLU097A – March 2012 – Revised July 2019 Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 5 Schematics www.ti.com Schematics Figure 2. Schematic Sheet 1 SNLU097A – March 2012 – Revised July 2019 LMK00105 User’s Guide Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 6 Schematics www.ti.com Figure 3. Schematic Sheet 2 LMK00105 User’s Guide SNLU097A – March 2012 – Revised July 2019 Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 7 PCB Layout www.ti.com PCB Layout Figure 4. PCB Top SNLU097A – March 2012 – Revised July 2019 LMK00105 User’s Guide Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 8 PCB Layout www.ti.com Figure 5. Bottom Side (Layer Inverted, Not to Scale) LMK00105 User’s Guide SNLU097A – March 2012 – Revised July 2019 Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 9 U2, U3 Texas Instruments 1V to 5V Applications, 8-pin LLP, Pb-Free Crystal, xxxMHz, xxpF Crystal, Citizen CS325, 52 MHz Citizen SNLU097A – March 2012 – Revised July 2019 LMK00105 User’s Guide Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 10 NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Original (March 2012) to A Revision ....................... Page ......................• Changed document throughout. Revision History SNLU097A – March 2012 – Revised July 2019 Submit Documentation Feedback Copyright © 2012–2019, Texas Instruments Incorporated...
  • Page 11 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2022, Texas Instruments Incorporated...

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