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LMK00725EVM User’s Guide

User's Guide

Literature Number: SNOU126

September 2013

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Содержание LMK00725EVM

Страница 1: ...LMK00725EVM User s Guide User s Guide Literature Number SNOU126 September 2013 ...

Страница 2: ...4 3 Setup 4 3 1 Input Output Connector Description 4 4 Operation 5 5 PCB Layout 7 6 Schematic 11 7 Bill of Materials 12 2 Table of Contents SNOU126 September 2013 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 3: ...2 Ground Plane Inverted 8 4 Inner Layer 3 Supply Plane Inverted 9 5 Bottom Layer 10 6 LMK00725EVM Schematic 11 List of Tables 1 Device and Package Configurations 4 2 LMK00725EVM Bill of Materials 12 3 SNOU126 September 2013 List of Figures Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 4: ...ll and how to properly connect set up and use the LMK00725EVM With this EVM one could distribute one of two input clocks to up to 5 LVPECL outputs Therefore a minimum of one clock source is needed and appropriate test equipment to observe or measure the outputs 3 1 Input Output Connector Description Connectors CLK0 and nCLK0 SMA connectors are used to interface an external AC coupled clock input t...

Страница 5: ...ck inputs are left open floating the outputs could have the tendency to chatter With DC coupled clock sources use a DC block at the input SMAs to ensure DUT input voltage range compliance Alternatively adjust the clock source DC bias if available to make sure the LMK00725 input voltage range is not violated Figure 1 LMK00725 Input Structure and Default Input Termination The clock inputs can accomm...

Страница 6: ...he SMA connectors to allow direct connections to RF instruments via SMA cables for test and evaluation The AC coupled outputs should be terminated with single ended 50 Ω or 100 Ω differential loads To minimize reflections and signal integrity issues it is recommended to terminate any driven output trace with a 50 Ω SMA load termination or otherwise disconnect any unused output from the trace by re...

Страница 7: ...www ti com PCB Layout 5 PCB Layout Figure 2 Top Layer 7 SNOU126 September 2013 LMK00725EVM User s Guide Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 8: ...PCB Layout www ti com Figure 3 Inner Layer 2 Ground Plane Inverted 8 LMK00725EVM User s Guide SNOU126 September 2013 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 9: ...www ti com PCB Layout Figure 4 Inner Layer 3 Supply Plane Inverted 9 SNOU126 September 2013 LMK00725EVM User s Guide Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 10: ...PCB Layout www ti com Figure 5 Bottom Layer 10 LMK00725EVM User s Guide SNOU126 September 2013 Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 11: ...www ti com Schematic 6 Schematic Figure 6 LMK00725EVM Schematic 11 SNOU126 September 2013 LMK00725EVM User s Guide Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 12: ...GND1 GND2 2 Black Test Point TH Compact Black 5006 Keystone 5006 H1 H2 Machine Screw Round 4 40 x B F Fastener 4 Screw NYPMS4400025PH H3 H4 1 4 Nylon Philips panhead Supply H5 H6 Standoff Hex 0 5 L 4 40 4 Standoff 1902C Keystone H7 H8 Nylon Thermal Transfer Printable PCB Label LBL1 1 Labels 0 650 W x 0 200 H 0 650 H x THT 14 423 10 Brady 10 000 per roll 0 200 W R2 R7 R12 R17 8 0 RES 0 ohm 5 0 1W 0...

Страница 13: ...ef Part Number Manufacturer R3 R8 0 100 RES 100 ohm 1 0 1W 0603 0603 CRCW0603100RFKEA Vishay Dale R13 R18 R30 R31 R34 R35 0 0 RES 0 ohm 5 0 1W 0603 0603 CRCW06030000Z0EA Vishay Dale R38 R39 13 SNOU126 September 2013 LMK00725EVM User s Guide Submit Documentation Feedback Copyright 2013 Texas Instruments Incorporated ...

Страница 14: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

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