Texas Instruments INA185EVM User Manual
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Texas Instruments INA185EVM User Manual

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This user's guide describes the characteristics, operation, and use of the INA185 evaluation module
(EVM). This EVM is designed to evaluate the performance of the
INA185A4
voltage output current-shunt monitors in a variety of configurations. Throughout this document,
the terms evaluation board, evaluation module, and EVM are synonymous with the INA185EVM. This
document includes a schematic, reference printed-circuit board (PCB) layouts, and a complete bill of
materials.
SBOU167 – March 2019
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Copyright © 2019, Texas Instruments Incorporated
User's Guide
SBOU167 – March 2019
INA185EVM
INA185A1, INA185A2, INA185A3, and
INA185EVM
1

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Summary of Contents for Texas Instruments INA185EVM

  • Page 1 Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the INA185EVM. This document includes a schematic, reference printed-circuit board (PCB) layouts, and a complete bill of materials.

  • Page 2: Table Of Contents

    ..................INA185Ax Gain Option Summary ....................INA185EVM Kit Contents ..................... Related Documentation ......................Bill of Materials Trademarks All trademarks are the property of their respective owners. INA185EVM SBOU167 – March 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated...

  • Page 3: Overview

    The following document provides information regarding TI's integrated circuits used in the assembly of the INA185EVM. This user's guide is available from the TI website under literature number (SBOU167). Any letter appended to the literature number corresponds to the document revision that is current at the time of the writing of this document.

  • Page 4: Hardware

    Quick Start Setup and Use The following instructions show how to set up and use the INA185 devices with the INA185EVM. For the circuits in the following instructions, x = A to D. Step 1. Connect an external dc supply voltage between 2.7-V and 5.5-V to the VCC test point TP2x, and connect the ground reference of that supply to one of the GND test points: TP7x, TP8x, or TP9x.

  • Page 5: Circuitry

    Circuitry This section summarizes the INA185EVM components. For the following circuits, x = A to D. C1x, J1x, R1x, and TP1x C1x and R1x form a low-pass RC filter to the source that supplies the INA185 REF pin. By default, no filter is installed, with R1x shorted by a 0-Ω...

  • Page 6: Reference Voltage Setup

    Alternatively, install C4x, R5x, R6x, and U2x to provide a buffered voltage divider input from the supply to set the reference voltage. For the buffered divider, install the jumper on the middle and right pins of J1x. INA185EVM SBOU167 – March 2019 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated...

  • Page 7: Schematic, Pcb Layout, And Bill Of Materials

    Schematic Figure 1 shows the schematic for the INA185EVM PCB. Only the schematic for the 20-V/V gain variant is included because all other variants use the same exact circuit with the same layout. All components associated with the 20-V/V INA185 A1 gain variant have the letter A appended at the end. The 50-V/V A2 gain variant has B appended, the 100-V/V A3 gain variant has C appended, and the 200-V/V A4 gain variant has a D appended.

  • Page 8: Ina185Evm Top Overlay

    PCB Layout Figure 2 through Figure 8 illustrate the PCB layout for the INA185EVM. Figure 2. INA185EVM Top Overlay Figure 3. INA185EVM Bottom Overlay Figure 4. INA185EVM Top Solder Mask Figure 5. INA185EVM Top Layer Figure 6. INA185EVM Bottom Layer Figure 7.

  • Page 9: Ina185Evm Drill Drawing

    Schematic, PCB Layout, and Bill of Materials www.ti.com Figure 8. INA185EVM Drill Drawing SBOU167 – March 2019 INA185EVM Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated...

  • Page 10: Bill Of Materials

    Schematic, PCB Layout, and Bill of Materials www.ti.com Bill of Materials Table 4 provides the parts list for the INA185EVM. Table 4. Bill of Materials DESIGNATOR QUANTITY VALUE DESCRIPTION PACKAGE REFERENCE PART NUMBER MANUFACTURER !PCB Printed-Circuit Board SENS037 C1A, C1B, C1C, C1D 0.1uF...
  • 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. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...

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