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background image

4. Click

OK

to close out of the

USB2ANY BSL Button (S1) Location

pop-up window and return to the previous

screen. Follow the on-screen procedure until the

Update Firmware

screen appears.

Figure B-4. Update Firmware

5. Click

Upgrade Firmware

to start the firmware upgrade. Click

Close

after the upgrade is complete.

Figure B-5. Firmware Update Complete

USB2ANY Firmware Upgrade

SNAU246A – JUNE 2020 – REVISED JANUARY 2021

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LMX2820EVM Evaluation Module

19

Copyright © 2021 Texas Instruments Incorporated

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Содержание LMX2820EVM

Страница 1: ...44 14 MHz to 22 6 GHz The device runs from a single 3 3 V supply and has integrated LDOs that eliminate the need for onboard low noise LDOs Table of Contents 1 Trademarks 2 2 LMX2820EVM Evaluation Module 3 2 1 Evaluation Module Contents 3 2 2 Evaluation Setup Requirement 3 2 3 Resources 3 www ti com Table of Contents SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM Evalu...

Страница 2: ...nal VCO Mode Setting 9 Figure 4 6 Register Readback 9 Figure 5 1 LMX2820EVM Schematic Page 1 10 Figure 5 2 LMX2820EVM Schematic Page 2 11 Figure 6 1 PCB Layer Stack Up 12 Figure 6 2 Top Layer 12 Figure 6 3 RF GND Layer 13 Figure 6 4 Signal GND Layer 13 Figure 6 5 Bottom Layer 14 Figure 8 1 Troubleshooting Guide 16 Figure B 1 Firmware Requirement 18 Figure B 2 Firmware Loader 18 Figure B 3 BSL Butt...

Страница 3: ...PC running Windows 7 or more recent version An oscilloscope optional A high quality signal generator optional Texas Instruments Clocks and Synthesizers TICS Pro software Texas Instruments PLLatinum Simulator Tool optional 2 3 Resources Related evaluation and development resources are as follows TICS Pro software PLLatinum Simulator Tool PLL Sim www ti com LMX2820EVM Evaluation Module SNAU246A JUNE...

Страница 4: ...ifferent configuration See Appendix A for more details 3 4 RF Output Connect either the RFOUTAP or RFOUTAN SMA connector to a signal analyzer The unused connector must be terminated with a 50 Ω resistor or SMA load Output frequency is 6 GHz and the amplitude is about 3 dBm By default the TICS Pro evaluation software has RFOUTB power down These SMA connectors can be left open 3 5 Programming Connec...

Страница 5: ...3 2 Select Device in TICS Pro 2 The ReadMe page will load Please take a minute to read the content to have a basic understanding of the GUI 3 Go to Default Configuration EVM Default Mode Figure 3 3 Default Mode www ti com Setup SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM Evaluation Module 5 Copyright 2021 Texas Instruments Incorporated ...

Страница 6: ...ble 4 1 Table 4 1 Loop Filter Configuration PARAMETER VALUE C1_LF 470 pF C2_LF 68 nF C3_LF 2 2 nF R2_LF 68 1 Ω R3_LF 18 2 Ω Figure 4 1 Loop Filter Typical Measurement www ti com 6 LMX2820EVM Evaluation Module SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 7: ... All Registers to write all the registers to LMX2820 The default output is 6 GHz Figure 4 2 Default Output www ti com Typical Measurement SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM Evaluation Module 7 Copyright 2021 Texas Instruments Incorporated ...

Страница 8: ...f Pulsed mode Figure 4 3 SYSREF Pulsed Mode Setting 4 2 2 Offset Mixing With PFDIN Pin The LMX2820 supports offset mxing with PFDIN pin In this mode the internal N divider is bypassed When using offset mixing with PFDIN pin the phase detector must operate with a single PFD As a result the charge pump current is equal to half the current setting made in register CPG Figure 4 4 Offset Mixing With PF...

Страница 9: ...ssive or active loop filter onboard Figure 4 5 External VCO Mode Setting 4 2 4 Register Readback To read back the written register values follow these steps 1 Click the Register Name that you want to read back 2 Click Read Register to read back the register value Figure 4 6 Register Readback www ti com Typical Measurement SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM ...

Страница 10: ...matic Figure 5 1 LMX2820EVM Schematic Page 1 Schematic www ti com 10 LMX2820EVM Evaluation Module SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 11: ...Figure 5 2 LMX2820EVM Schematic Page 2 www ti com Schematic SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM Evaluation Module 11 Copyright 2021 Texas Instruments Incorporated ...

Страница 12: ...ayer FR4 Er 4 2 FR4 Er 4 2 Bottom layer 62 mil Signal GND layer 10 mil Figure 6 1 PCB Layer Stack Up 6 2 PCB Layout Figure 6 2 Top Layer PCB Layout and Layer Stack Up www ti com 12 LMX2820EVM Evaluation Module SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 13: ... Layer Figure 6 4 Signal GND Layer www ti com PCB Layout and Layer Stack Up SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM Evaluation Module 13 Copyright 2021 Texas Instruments Incorporated ...

Страница 14: ...ure 6 5 Bottom Layer PCB Layout and Layer Stack Up www ti com 14 LMX2820EVM Evaluation Module SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Страница 15: ...0 Ohm Gold Edge Mount 142 0771 831 Cinch Connectivity J14 J18 2 CONN SMA JACK STR EDGE MNT CON SMA EDGE S RF Solutions Ltd R1 1 RES 1 0 k 5 0 1 W AEC Q200 Grade 0 0603 CRCW06031K00JN EA Vishay Dale R2 R4 R5 R6 R7 R8 R9 7 RES 33 5 0 1 W AEC Q200 Grade 0 0603 CRCW060333R0JN EA Vishay Dale R2LF 1 RES 68 1 1 0 1 W AEC Q200 Grade 0 0603 CRCW060368R1FK EA Vishay Dale R3LF 1 RES 18 2 1 0 1 W AEC Q200 Gra...

Страница 16: ...ion No Yes Verify software setup x 5HYHUW WR GHIDXOW PRGH LQ WKH VRIWZDUH XQGHU HIDXOW RQILJXUDWLRQ x Validate that no boxes are red If so mouse over and read the tool tips x Ensure that all the frequency boxes values are correct Also understand that the VCO frequency could be different than the output frequency as there are often dividers after the boxes x Load all registers Ctrl L x Try Readback...

Страница 17: ...e EVM is configured for an external single ended clock Table A 1 Reference Clock Input Configuration DIFFERENTIAL CLOCK SINGLE ENDED CLOCK www ti com Using Different Reference Clock SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM Evaluation Module 17 Copyright 2021 Texas Instruments Incorporated ...

Страница 18: ... the USB2ANY Firmware Requirement pop up window appears click OK to continue Figure B 1 Firmware Requirement 2 Next follow the on screen procedure shown in Figure B 2 Figure B 2 Firmware Loader 3 If you do not know the location of the BSL button click the Help me locate the BSL Button S1 button to launch the USB2ANY BSL Button S1 Location pop up window Figure B 3 BSL Button USB2ANY Firmware Upgrad...

Страница 19: ...irmware screen appears Figure B 4 Update Firmware 5 Click Upgrade Firmware to start the firmware upgrade Click Close after the upgrade is complete Figure B 5 Firmware Update Complete www ti com USB2ANY Firmware Upgrade SNAU246A JUNE 2020 REVISED JANUARY 2021 Submit Document Feedback LMX2820EVM Evaluation Module 19 Copyright 2021 Texas Instruments Incorporated ...

Страница 20: ...les figures and cross references throughout the document Updated the operating frequency range 1 Updated graphics and added description to the ReadMe page to the Evaluation Software section 5 Updated graphic in SYSREF Example section 8 Updated graphic and changed external PFD mode to offset mixing with PFDIN pin in the Offset Mixing With PFDIN Pin section 8 Updated graphic in External VCO Mode sec...

Страница 21: ...other than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control techniques are used to the extent TI deems necessary TI does not test all parameters of each EVM User s claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects...

Страница 22: ... These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation...

Страница 23: ...y for convenience and should be verified by User 1 Use EVMs in a shielded room or any other test facility as defined in the notification 173 issued by Ministry of Internal Affairs and Communications on March 28 2006 based on Sub section 1 1 of Article 6 of the Ministry s Rule for Enforcement of Radio Law of Japan 2 Use EVMs only after User obtains the license of Test Radio Station as provided in R...

Страница 24: ... any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard User assumes all responsibility and liability for any improper or unsafe handling or use of the EVM by User or its employees affiliates contractors or designees 4 4 User assumes all...

Страница 25: ...OR DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthermore no return of EVM s will be accepted if the package has been opened and no return of the EVM s will be accepted if they are damaged or otherwise not in a resalable condition If User feels it has...

Страница 26: ...s are subject to change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of these resources is prohibited No license is granted to any other TI intellectual property right or to any third party intellectual property right TI disclaims responsibility for and you wi...

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