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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. This kit is not a finished product and when assembled may not be resold or
otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition
that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.
Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must
operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

3.1.2

For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:

CAUTION

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.

FCC Interference Statement for Class A EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.

FCC Interference Statement for Class B EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. 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. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

3.2

Canada

3.2.1

For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.

Concernant les EVMs avec appareils radio:

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concerning EVMs Including Detachable Antennas:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.

Summary of Contents for LMX2820EVM

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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 ...

Page 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 ...

Page 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...

Page 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 ...

Page 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 ...

Page 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 ...

Page 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 ...

Page 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 ...

Page 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 ...

Page 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...

Page 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...

Page 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 ...

Page 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...

Page 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 ...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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