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User's Guide

SBOU083 – September 2010

INA282-INA286EVM

This user’s guide describes the characteristics, operation, and use of the INA282-286EVM evaluation
module (EVM). This EVM is designed to evaluate the performance of the

INA282-286

family of voltage

output current shunt monitors. This EVM has a flexible configuration, allowing for user evaluation suitable
to a variety of applications. This document also includes a schematic and a complete bill of materials.

Contents

1

Introduction and Overview

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2

2

Quick Start Setup and Use

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4

3

INA282-286EVM Circuit

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6

4

Reference Voltage Setup

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10

5

INA282-286EVM Schematic

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13

6

Bill of Materials

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14

List of Figures

1

Hardware Included with the INA282-286EVM

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3

2

Measurement with Shunt

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4

3

Measurement without Shunt

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5

4

TO-247 Package in R1

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6

5

CS3 Package in R1

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6

6

TO-126 Package in R1

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6

7

TO-220 Package in R1

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6

8

Radial Package in R2

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8

9

U1 Populated With DIP Board

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9

10

Unidirectional Mode: Positive Differential Voltage Configuration

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10

11

Unidirectional Mode: Negative Differential Voltage Configuration

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11

12

Bi-directional Mode: One Reference to Ground, One Reference to Supply Configuration

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11

13

Bi-directional Mode: Specific Voltage Required Configuration

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12

14

Bi-directional Mode: Buffered Voltage Configuration

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12

15

INA282-286EVM Schematic

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13

All trademarks are the property of their respective owners.

1

SBOU083 – September 2010

INA282-INA286EVM

Submit Documentation Feedback

Copyright © 2010, Texas Instruments Incorporated

Summary of Contents for INA282

Page 1: ...4 List of Figures 1 Hardware Included with the INA282 286EVM 3 2 Measurement with Shunt 4 3 Measurement without Shunt 5 4 TO 247 Package in R1 6 5 CS3 Package in R1 6 6 TO 126 Package in R1 6 7 TO 220 Package in R1 6 8 Radial Package in R2 8 9 U1 Populated With DIP Board 9 10 Unidirectional Mode Positive Differential Voltage Configuration 10 11 Unidirectional Mode Negative Differential Voltage Con...

Page 2: ... layout is not intended to be a model for the target circuit nor is it laid out for electromagnetic compatibility EMC testing The layout of the INA282 286EVM printed circuit board PCB is designed to provide these features Easy handling of the small package a mechanical drawing of the recommended land pattern is found at the end of the product data sheet Easy access to all pins of the device Space ...

Page 3: ...shows Figure 1 Hardware Included with the INA282 286EVM The INA282 286EVM kit is shipped with the following items INA282 286EVM PCB Five populated test boards INA282 INA283 INA284 INA285 INA286 If any of the items in the EVM kit shipment are missing or damaged please contact the Texas Instruments Product Information Center nearest you to inquire about a replacement 3 SBOU083 September 2010 INA282 ...

Page 4: ...applied at the reference input can be varied depending on how the device is to be used Further details regarding the use of the reference voltage are discussed later in this guide refer to Section 4 for additional information on configuring the reference pins based on the user s application requirements Step 4 Connect the Input 2 1 Measurement With Shunt This connection method allows the user to i...

Page 5: ...ly of devices if this measurement method is used make sure the voltage source is either a very low impedance or the differential voltage applied to the inputs is buffered to prevent additional errors in the circuit To configure a measurement evaluation without a shunt follow these procedures 1 Connect a differential voltage to the VIN and VIN terminals of T2 2 Measure the output voltage at the VOU...

Page 6: ... VIN and VIN inputs respectively The designation of 3 and 4 indicates that particular hole is intended for the sense measurement of a four wire shunt Care must be taken to ensure that the shunt is placed in the correct position in the R1 location This placement consideration is evident when using a two connection shunt with a spacing of 200 mils 200in or 5 080mm As shown in Figure 4 through Figure...

Page 7: ...ti com INA282 286EVM Circuit Figure 6 TO 126 Package in R1 Figure 7 TO 220 Package in R1 7 SBOU083 September 2010 INA282 INA286EVM Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated ...

Page 8: ...for through hole and surface mount packages that range in size from 0603 to 1206 Additional information regarding the use of input filtering is provided in the INA282 286 product data sheet 3 4 Bypass Capacitors and Jumpers C2 C3 and C4 are 0 1mF supply bypass capacitors J1 is intended to be used as measurements points of R1 if necessary J2 is used as a test port at the factory but can be used for...

Page 9: ...lied across the inputs or developed based on the load current flowing through the shunt resistor The selected device must allow the output voltage to remain within the acceptable range after the developed input voltage is amplified by the respective device gain An output below the minimum allowable output requires the selection of a device with a higher gain Likewise an output above the maximum al...

Page 10: ...ion Two easily accessed oscilloscope ground pads are located on the PCB to facilitate easier probing 4 Reference Voltage Setup The INA282 286 devices allow an external voltage signal to be used for the device s reference voltage This reference voltage determines how the output responds to certain input conditions The configurable settings of the reference allow these devices to be used in both uni...

Page 11: ...age so there is a greater available range for positive input voltages than for negative voltages because the reference voltage is limited to the range of 0V to 5V The maximum range for the output of this device to accommodate a bi directional application involves applying 5V to the reference pin and a supply voltage of 18V This configuration allows for a maximum output voltage range of 4 96V 12 6V...

Page 12: ...ed or a buffered voltage developed from a resistor divider could be used Figure 13 and Figure 14 illustrate these two configurations respectively Figure 13 Bi directional Mode Specific Voltage Required Configuration Figure 14 Bi directional Mode Buffered Voltage Configuration 12 INA282 INA286EVM SBOU083 September 2010 Submit Documentation Feedback Copyright 2010 Texas Instruments Incorporated ...

Page 13: ...ts LOGO1 Scope GND1 Vout REF2 V Vin Vin GND V GND REF1 Vin Vin Vout 1 2 3 4 5 6 7 8 9 10 J2 C2 0 1uF REF1 Vout Vin Vin 1 2 T4 1 2 T3 REF2 V REF2 REF1 REF2 1 2 REF1 V 1 2 REF2 GND www ti com INA282 286EVM Schematic 5 INA282 286EVM Schematic 5 1 Schematic Figure 15 illustrates the INA282 286EVM schematic Figure 15 INA282 286EVM Schematic 13 SBOU083 September 2010 INA282 INA286EVM Submit Documentatio...

Page 14: ...ze CONN HEADER 32POS 100 SGL GOLD Samtec TSW 132 07 G S 11 All Test Points TP cut to size CONN HEADER 32POS 100 SGL GOLD Samtec TSW 132 07 G S 8 None N A CONN SOCKET RCPT 014 026 30AU AMP 5050863 5 4 None N A Screw Machine Phillips Panhead 4 40X1 4 SS Building PMSSS 440 0025 Fasteners PH 4 None N A Standoffs Hex 4 40 Threaded 0 500 length 0 250 OD Keystone 2203 Electronics 5 INA282DIP N A Populate...

Page 15: ...s important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI products or services might be or a...

Page 16: ...ch statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertise in the safety and regulatory ramifications o...

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