Texas Instruments LMK1C1104 User Manual
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Texas Instruments LMK1C1104 User Manual

Low-additive, phase-noise lvcmos clock buffer evaluation board
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User's Guide
LMK1C1104 Low-Additive, Phase-Noise LVCMOS Clock
Buffer Evaluation Board
Y4
Y6
The LMK1C1104 is a high-performance, low additive jitter LVCMOS clock buffer with one LVCMOS input, four
LVCMOS outputs, and a global output enable pin.
This evaluation module (EVM) is designed to demonstrate the electrical performance of the LMK1C1104.
Throughout this document, the acronym EVM and the phrases evaluation module and evaluation board are
synonymous with the LMK1C1104EVM.
The LMK1C1104EVM is equipped with 50-Ω SMA connectors and impedance-controlled 50-Ω microstrip
transmission lines for best performance.
SNAU249A – DECEMBER 2019 – REVISED DECEMBER 2020
Submit Document Feedback
ABSTRACT
Figure 1-1. LMK1C1104EVM
Figure 8-1
illustrates the LMK1C1104EVM.
LMK1C1104 Low-Additive, Phase-Noise LVCMOS Clock Buffer Evaluation
Copyright © 2020 Texas Instruments Incorporated
Y3
Y2
Board
1

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Summary of Contents for Texas Instruments LMK1C1104

  • Page 1 ABSTRACT Figure 1-1. LMK1C1104EVM The LMK1C1104 is a high-performance, low additive jitter LVCMOS clock buffer with one LVCMOS input, four LVCMOS outputs, and a global output enable pin. This evaluation module (EVM) is designed to demonstrate the electrical performance of the LMK1C1104.

  • Page 2: Table Of Contents

    Clock output traces are length matched 2 Signal Path and Control Circuitry The LMK1C1104EVM supports single-ended inputs up to 250 MHz. For more information about the LMK1C1104, see the LMK1C1104 product data sheet available for download from the TI Web site (www.ti.com).

  • Page 3: Power-Supply Connections

    The LMK1C1104EVM operates from a single 3.3-V / 2.5-V / 1.8-V supply. 5 Enabling/Disabling the Outputs The enable pin, 1G, of the LMK1C1104 can be controlled using jumper J3. Pull 1G to VDD by shunting pins 2 and 3 of J3 to enable the outputs as shown in Figure 5-1.

  • Page 4: Output Clock

    By default, a shunt is placed on pins 2 and 3 to enable the outputs. 6 Output Clock The LMK1C1104 fans out four LVCMOS outputs. The outputs can be loaded using the pullup and pulldown footprints. No resistor has been soldered in those footprints.

  • Page 5: Schematic

    10uF 0.1µF 0.1µF 0.1µF 1µF CLKIN CLKIN LMK1C1104PW Figure 8-1. LMK1C1104 Schematic SNAU249A – DECEMBER 2019 – REVISED DECEMBER 2020 LMK1C1104 Low-Additive, Phase-Noise LVCMOS Clock Buffer Evaluation Board Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated...

  • Page 6: Revision History

    Added content to the Output Clock section......................• Changed Table 7-2 ............................• Changed Figure 8-1 ............................5 LMK1C1104 Low-Additive, Phase-Noise LVCMOS Clock Buffer Evaluation SNAU249A – DECEMBER 2019 – REVISED DECEMBER 2020 Board Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated...
  • Page 7 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
  • Page 8 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
  • Page 9 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
  • Page 10 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
  • Page 11 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...
  • Page 12 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2020, Texas Instruments Incorporated...

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