Texas Instruments LMX2571EPEVM User Manual Download Page 21

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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 LMX2571EPEVM

Page 1: ...has integrated LDOs that eliminate the need for onboard low noise LDOs Except for the following components this board is able to support extended temperature range testing LED uWIRE socket Header and short Ribbon cable Table of Contents 1 LMX2571EPEVM Evaluation Module 3 1 1 Evaluation Module Contents 3 1 2 Installing the EVM Software 3 1 3 Resources 3 2 Setup 4 2 1 Connection Diagram 4 2 2 Power ...

Page 2: ...0 Figure 5 2 Top Layer 10 Figure 5 3 GND Layer 11 Figure 5 4 Signal GND Layer 11 Figure 5 5 Bottom Layer 12 Figure 7 1 Troubleshooting Guide 14 Figure A 1 Single ended Input 15 Figure A 2 Differential Input 15 Figure A 3 Crystal Oscillator Input 15 Figure B 1 Output Termination Schematic 17 Figure B 2 Default Output Phase Nosie 17 Figure B 3 Default Output Waveform 17 Figure B 4 Firmware Requireme...

Page 3: ...lyzer A PC running Windows 7 or more recent version An oscilloscope optional A high quality signal generator Texas Instruments Clocks and Synthesizers TICS Pro software Texas Instruments PLLatinum Simulator Tool optional 1 3 Resources Related evaluation and development resources include LMX2571 EP data sheet TICS Pro software PLLatinum Simulator Tool PLL Sim Reference PRO design file www ti com LM...

Page 4: ...fault the output clock from Reference PRO is a 100 MHz LVPECL clock Appendix B has the details of Reference PRO 2 4 RF Output Connect RFOUTRX SMA connector to a signal analyzer Output frequency is 480 MHz and the amplitude is about 1 dBm By default the evaluation software TICS Pro has RFOUTTX power down This SMA connectors could be left open 2 5 Programming Connect ribbon cable from Reference PRO ...

Page 5: ...position in PLL mode and provide a 5 V supply to the reserved pads for the 5 V SMA connector Figure 2 4 J11 Header 2 7 2 J12 Header Pin 2 of J12 is connected to the CE pin Put a short to the HW position this will connect the CE pin to 3V3 through resistor R38 If the short is placed in the SW position the status of CE pin is configurable through TICS Pro Figure 2 5 J12 Header www ti com Setup SNAU1...

Page 6: ...0 MHz Loop bandwidth 205 kHz Phase margin 40 degrees C1_LF 390 pF C2_LF 4 7 nF R2_LF 680 Ω R3_LF R4_LF Internal 800 Ω C3_LF Internal 50 pF C4_LF Internal 100 pF Figure 3 1 Loop Filter 3 1 2 Typical Output 1 Follow Section 2 to set up the evaluation 2 Click Write All Registers to write all the registers to LMX2571 EP The default output is 480 MHz Figure 3 2 Default Output Typical Measurement www ti...

Page 7: ...ided by 4 CHDIV2 Divided by 1 PLL_DEN 224 Prescalar 2 Frequency deviation 600 Hz 1800 Hz Continue to toggle the FSK_D 1 0 and FSK_DV pins the output is a discrete 4 level FSK modulated signal Figure 3 3 FSK PIN Mode Setting Figure 3 4 FSK PIN Mode 3 2 2 Register Readback To read back the written register values use the following steps 1 From the TICS Pro set SDO_LD_SEL to Lock detect output www ti...

Page 8: ...t to read back 3 Click the Read Register button to read back the register value Figure 3 6 Register Readback Typical Measurement www ti com 8 LMX2571EPEVM Evaluation Instructions SNAU182 MARCH 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 9: ...4 Schematic Figure 4 1 LMX2571EPEVM Schematic www ti com Schematic SNAU182 MARCH 2021 Submit Document Feedback LMX2571EPEVM Evaluation Instructions 9 Copyright 2021 Texas Instruments Incorporated ...

Page 10: ...Prepreg and Core Layers The top layer is 1 oz copper Figure 5 1 PCB Layer Stack Up 5 2 PCB Layout Figure 5 2 Top Layer Board Construction www ti com 10 LMX2571EPEVM Evaluation Instructions SNAU182 MARCH 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 11: ...ure 5 3 GND Layer Figure 5 4 Signal GND Layer www ti com Board Construction SNAU182 MARCH 2021 Submit Document Feedback LMX2571EPEVM Evaluation Instructions 11 Copyright 2021 Texas Instruments Incorporated ...

Page 12: ...Figure 5 5 Bottom Layer Board Construction www ti com 12 LMX2571EPEVM Evaluation Instructions SNAU182 MARCH 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 13: ...8LF FCI J8 1 Header 100mil 4x2 Gold SMT 0015910080 Molex J9 1 Header 100mil 2x1 Gold TH TSW 102 07 G S Samtec J11 J12 2 Header 100mil 3x1 Gold TH TSW 103 07 G S Samtec R1 R2 R3 R5 R6 R7 R8 R20 R21 9 RES 0 5 0 1 W AEC Q200 Grade 0 0603 CRCW06030000Z0EA Vishay Dale R2LF 1 RES 680 5 0 1 W AEC Q200 Grade 0 0603 CRCW0603680RJNEA Vishay Dale R4 R10 R11 R13 R14 5 RES 330 5 0 1 W AEC Q200 Grade 0 0603 CRC...

Page 14: ...erified to be working Register read back requires the correct software setup See Section 3 2 2 for details The POR current of the LMX2571EPEVM is approximately 30 mA The power down current of the LMX2571EPEVM is approximately 3 mA Figure 7 1 Troubleshooting Guide Troubleshooting Guide www ti com 14 LMX2571EPEVM Evaluation Instructions SNAU182 MARCH 2021 Submit Document Feedback Copyright 2021 Texa...

Page 15: ... EVM is configured for an external single ended clock Figure A 1 Single ended Input Figure A 2 Differential Input Figure A 3 Crystal Oscillator Input www ti com Using Different Reference Clock SNAU182 MARCH 2021 Submit Document Feedback LMX2571EPEVM Evaluation Instructions 15 Copyright 2021 Texas Instruments Incorporated ...

Page 16: ...t Frequency Selection FS1 FS0 OUTPUT FREQUENCY MHz GND GND 100 GND NC 312 5 GND Vdd 125 NC GND 106 25 NC NC 156 25 NC Vdd 212 5 Vdd GND 62 5 B 2 Output Format Selection The OE pin is used to enable or disable the output The OS pin is used to bias internal drivers and change the output format Table B 2 Reference PRO Output Format Selection OE OS OUTPUT FORMAT GND Don t Care Disabled Vdd GND LVPECL ...

Page 17: ...cal Output Characteristics Figure B 2 Default Output Phase Nosie Figure B 3 Default Output Waveform B 4 Firmware Update Usually when the Reference PRO board is used at the first time TICS Pro will request for a firmware update Simply follow the pop up instructions to complete the update This is necessary to ensure that the USB connection between the PC and the Reference PRO board is properly setup...

Page 18: ...ton 4 Follow the on screen procedure until the below screen is pop up Figure B 7 Update Firmware 5 Click the Upgrade Firmware button the firmware will be upgrading Click the Close button after the upgrade is complete Reference PRO www ti com 18 LMX2571EPEVM Evaluation Instructions SNAU182 MARCH 2021 Submit Document Feedback Copyright 2021 Texas Instruments Incorporated ...

Page 19: ...o by clicking USB communications Interface Make sure the USB Connected button is now green Figure B 9 USB Communications www ti com Reference PRO SNAU182 MARCH 2021 Submit Document Feedback LMX2571EPEVM Evaluation Instructions 19 Copyright 2021 Texas Instruments Incorporated ...

Page 20: ...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 21: ... 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 22: ...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 23: ... 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 24: ...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 25: ...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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