Table of Contents
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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
List of Figures
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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 LMH9235RRL-EVM
Summary of Contents for Texas Instruments LMH9235RRL-EVM
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Page 1: Table Of Contents
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. -
Page 2: Description
If the supply current is low, ensure that the device is not disabled by shorting the jumper connection for J5 between 2 and 3 header pins. 2. Power-down option: LMH9235 Evaluation Module SBOU242 – May 2020 Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated... - Page 3 L and C components. The trace impedance is calculated by the stack-up configuration as given in Section 2.4. See Table 1 for the L and C component values used on the LMH9235 EVM. SBOU242 – May 2020 LMH9235 Evaluation Module Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated...
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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 Copyright © 2020, Texas Instruments Incorporated... -
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
4.3 nH 3% 500 MHz 14Q-Factor 350 mA 0201 Murata LQP03TN4N3H02D 400 mΩ DCR 0201 Paper T/R LMH9235IRRL, RRL0012A RRL0012A Texas Instruments LMH9235IRRL (WQFN-12) SBOU242 – May 2020 LMH9235 Evaluation Module Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated... -
Page 8: Stack Up And Material
4. It is important to account for onboard trace losses at the input and output pins of the device. De- embedding of the input and output traces is recommended to improve the S-parameter measurement LMH9235 Evaluation Module SBOU242 – May 2020 Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated... -
Page 9: Noise Figure Test Setup
5. Using the Friis equation is helpful when calculating combined NF of the measurement setup, and then back calculating the individual device noise figure. SBOU242 – May 2020 LMH9235 Evaluation Module Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated... -
Page 10: Two-Tone Oip3 Test Setup
IMD3 = Higher power of the two inter-modulation distortion products recorded at either 2f1 – f2 or 2f2 – f1 8. The thing to note in is the P which is the amplifier output power per tone. IN_SA LOSS LMH9235 Evaluation Module SBOU242 – May 2020 Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated... - Page 11 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2020, Texas Instruments Incorporated...