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EVM User's Guide: LMX1214EVM
LMX1214 Evaluation Module
Description
The LMX1214 evaluation module (EVM) is designed
to evaluate the performance of the LMX1214 which is
a four-output, ultra-low additive jitter radio-frequency
(RF) buffer & divider. The device can buffer RF
frequencies up to 16GHz and divide outputs by up
to 6.4GHz. This board consists of an LMX1214 device
and an integrated USB2ANY programmer.
Features
•
300MHz to 16GHz output frequency
•
4 high-frequency clocks
– Shared divide by 2, 3, 4, 5, 6, 7 and 8
SNAU299 – JANUARY 2024
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•
2.5V operating voltage
•
–40ºC to +85ºC operating temperature
•
Optional pin mode control without register
programming
Applications
•
General purpose:
– Data converter clocking
– Clock distribution/multiplication/division
•
Aerospace and
–
–
–
– Phased array antenna/beam forming
Copyright © 2024 Texas Instruments Incorporated
defense:
Radar
Electronic warfare
Seeker front end
LMX1214 Evaluation Module
Description
1
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Related Manuals for Texas Instruments LMX1214
Summary of Contents for Texas Instruments LMX1214
- Page 1 –40ºC to +85ºC operating temperature The LMX1214 evaluation module (EVM) is designed • Optional pin mode control without register to evaluate the performance of the LMX1214 which is programming a four-output, ultra-low additive jitter radio-frequency Applications (RF) buffer & divider. The device can buffer RF frequencies up to 16GHz and divide outputs by up •...
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Page 2: Kit Contents
1.1 Introduction The LMX1214 EVM is an ultra-low additive-jitter RF buffer and divider. The device can buffer RF frequencies up to 16GHz and divide outputs by up to 6.4GHz. A separate auxiliary clock divider can be used for FPGAs or other logic ICs. -
Page 3: Connection Diagram
The on board TCA9555 IO expander allows the user to change pin states without manually needing to flip the position of the switches. This allows users to toggle pin modes via the GUI as well. SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 4 Pulled High to VPINM via 10kOhm pull up Sets device to divider mode MUXSEL Shorted to GND via 10kOhm pull down Sets device to buffer mode LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 5: Power Requirements
CLK2 & CLK3 enabled and can be disabled via SPI S5 (DIVSEL0) Divider value controlled via SPI S6 (DIVSEL1) Divider value controlled via SPI S7 (MUXSEL) Device mode controlled via SPI SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... -
Page 6: Reference Clock
2.7 Switch Information The LMX1214 EVM can be operated in either pin mode or SPI mode. Pin mode allows basic configuration of the LMX1214 device without the need of a microcontroller. SPI mode provides full access to the LMX1214 device. -
Page 7: Default Configuration
Hardware 2.8 Default Configuration The LMX1214 EVM default mode configures the device in buffer mode. AUXCLK is also disabled in this mode with a fixed divider value of 128. 2.9 Divider Mode Example To set LMX1214 to divider mode via SPI do the following: Set CLK_MUX (R25[2:0] = Divider (0x2). - Page 8 The user is now able to change the states of the pin mode headers via the IO expander by pulling pins either LOW or HIGH directly without physically needing to move the switches. LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 9: Software Description
(EVM) through the on-board USB2ANY interface. 3.3 USB2ANY Interface The on-board USB2ANY interface provides a bridge between TICS Pro software and the LMX1214 device. When the on-board USB2ANY controller is first connected to a PC, or if the firmware revision for the controller does not match with the version used by TICS Pro, a firmware update to the controller is required. - Page 10 9. Click the Identify button and the LED in the USB2ANY interface starts to flash. Figure 3-6. Identify USB2ANY Controller 10. Now the USB2ANY is ready to use. Click the Close button to close the window. LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 11 After the profile is loaded and any changes required have been made, the signal analyzer has an 3200MHz signal at around +6-dBm single-ended, or +9-dBm differential. Figure 4-2. 3200MHz Buffer Mode Signal Analyzer Plot SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 12 Finally, the registers must be reloaded using the USB Communications → Write All Registers menu option, or by pressing the accelerator keys, CTRL + L. Figure 4-3. 3200MHz Divide by 2 Mode Signal Analyzer Plot LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 13 Hardware Design Files 5 Hardware Design Files 5.1 Schematic Figure 5-1. Power Supply, IO Control, Switches SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 14 Hardware Design Files www.ti.com Figure 5-2. LMX1214 LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 15 Hardware Design Files Figure 5-3. USB2ANY Interface SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 16: Pcb Layout
Hardware Design Files www.ti.com 5.2 PCB Layout Figure 5-4. Top Layer Figure 5-5. Layer 2 (RF GND) LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 17 Hardware Design Files Figure 5-6. Layer 3 (Signal) Figure 5-7. Bottom Layer SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 18 Hardware Design Files www.ti.com 5.2.1 PCB Layer Stack-Up The top layer is 2oz. copper. Figure 5-8. PCB Layer Stack-Up LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 19 Connector, End launch SMA 50 ohm, TH 142-0761-881 Cinch Connectivity J20, J21, J24, J25 CONN SMA JACK STR EDGE MNT CONN_JACK CON-SMA-EDGE-S RF Solutions Ltd. SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 20 S2, S3, S4, S5, S6, S7 Switch, SPDT, Slide, On-On, 2 Pos, TH 4x11.6mm EG1218 E-Switch SH-J28, SH-J29 Shunt, 100mil, Gold plated, Black Shunt SNT-100-BK-G Samtec LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 21 Texas Instruments to 5.5V, -40 to 85 degC, 24-pin QFN (RTW), Green (RoHS & no Sb/Br) Crystal, 24.000MHz, 20pF, SMD Crystal, 11.4x4.3x3.8mm ECS-240-20-5PX-TR ECS Inc. SNAU299 – JANUARY 2024 LMX1214 Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 22 Refer to the data sheet (SNAS866) to make sure the proper input frequency is being used. 6.2 Trademarks All trademarks are the property of their respective owners. LMX1214 Evaluation Module SNAU299 – JANUARY 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 23 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 24 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 25 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 26 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 27 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 © 2023, Texas Instruments Incorporated...
- Page 28 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2024, Texas Instruments Incorporated...
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