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This document outlines the basic steps and functions that are required to ensure the proper operation and
quick setup of the LMH9235RRL-EVM. This document also includes a schematic diagram, a bill of
materials (BOM), printed-circuit board (PCB) layouts, and test block diagrams. Throughout this document,
the abbreviations EVM, LMH9235 EVM and the term evaluation module are synonymous with the
LMH9235RRL-EVM, unless otherwise noted.
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Noise Figure Test Setup
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Trademarks
Isola is a registered trademark of Isola USA Corporation.
All other trademarks are the property of their respective owners.
SBOU242 - May 2020
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Copyright © 2020, Texas Instruments Incorporated
LMH9235 Evaluation Module
Contents
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List of Tables
User's Guide
SBOU242 - May 2020
LMH9235 Evaluation Module
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Table of Contents
Related Manuals for Texas Instruments LMH9235
Summary of Contents for Texas Instruments LMH9235
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Page 1: Table Of Contents
LMH9235RRL-EVM. This document also includes a schematic diagram, a bill of materials (BOM), printed-circuit board (PCB) layouts, and test block diagrams. Throughout this document, the abbreviations EVM, LMH9235 EVM and the term evaluation module are synonymous with the LMH9235RRL-EVM, unless otherwise noted. -
Page 2: Description
Description www.ti.com Description The LMH9235 evaluation module (EVM) is used to evaluate the LMH9235 device, which is a single-ended input to differential output RF gain block amplifier available in a 2 × 2-mm , 12-pin RRL package. The device is well-suited to support requirements for the next generation 5G m-MIMO active antenna system while interfacing with the input of transceiver. - Page 3 Description www.ti.com a. Short terminals 1 and 2 on J5 to put the LMH9235 device in its power down state. The supply current (I ) drawn should be < 15 mA. 3. Single tone measurement setup recommendation: a. Connect an RF signal generator to input J3 SMA connector.
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Page 4: Evm Overview
This section includes the schematic diagram, a bill of materials (BOM), PCB layer prints, and EVM stack- up information. Schematic Figure 2 shows the LMH9235 EVM schematic. Figure 2. LMH9235 EVM Schematic LMH9235 Evaluation Module SBOU242 – May 2020 Submit Documentation Feedback... -
Page 5: Pcb Layers
EVM Overview www.ti.com PCB Layers Figure 3 through Figure 6 illustrate the PCB layers for this EVM. Figure 3. Top Layer Figure 4. Layer 2 SBOU242 – May 2020 LMH9235 Evaluation Module Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated... -
Page 6: Layer 3
EVM Overview www.ti.com Figure 5. Layer 3 Figure 6. Bottom Layer LMH9235 Evaluation Module SBOU242 – May 2020 Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated... -
Page 7: Lmh9235 Evm Bill Of Material
EVM Overview www.ti.com LMH9235 EVM Bill of Material Table 1. LMH9235 EVM BOM Common BOM Item Designator Quantity Value Description Footprint Manufacturer Part Number !PCB1 Printed Circuit Board AMPS094 CAP, CERM, 1 µF, 10 V, ±20%, Samsung Electro- 1 µF... -
Page 8: Stack Up And Material
2. Before connecting the RF coax cables to the LMH9235 EVM, you must calibrate the VNA along with the cables using a calibration kit. This accounts for any cable losses in the S-parameter calculation at the VNA and helps set reference impedance at the cable ends. -
Page 9: Noise Figure Test Setup
Test Setup Diagrams www.ti.com that is representative of the device performance. Figure 9 Figure 10 give typical input and output trace losses measured on the LMH9235 EVM, respectively. -0.1 -0.2 -0.3 -0.4 -0.5 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 Frequency (MHz) Figure 9. -
Page 10: Two-Tone Oip3 Test Setup
) at the device. 3. TI recommends that the output power level is within the linear operation range of the LMH9235 device. For example, if the total desired output power at the device is 8 dBm, then set the signal generators such that each of the fundamental output power results in 2 dBm per tone. - Page 11 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 12 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 13 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 14 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 15 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 © 2019, Texas Instruments Incorporated...
- Page 16 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products.IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2021, Texas Instruments Incorporated...
- Page 17 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments LMH9235RRLEVM...