Texas Instruments INA209 Manuel utilisateur

User's Guide

SBOU055A–February 2008–Revised February 2010

INA209 Evaluation Module

This user's guide describes the characteristics, operation, and use of the INA209 evaluation module

(EVM). It discusses the processes and procedures required to properly use this EVM board. This

document also includes the physical printed circuit board (PCB) layout, schematic diagram, and circuit

descriptions.

Contents

1 Overview ..................................................................................................................... 2

2 System Setup ................................................................................................................ 4

3 INA209EVM Hardware Setup ............................................................................................ 10

4 INA209 Software Overview .............................................................................................. 17

5 Bill of Materials ............................................................................................................. 24

List of Figures

1 Hardware Included With the INA209EVM ............................................................................... 2

2 Hardware Setup for the INA209EVM..................................................................................... 4

3 Block Diagram of the INA209 Test Board ............................................................................... 5

4 INA209 Test Board Schematic............................................................................................ 6

5 Theory of Operation For the USB Dig Platform......................................................................... 9

6 Typical Hardware Connections .......................................................................................... 10

7 Connecting the Two EVM PCBs ........................................................................................ 11

8 Connecting Power to the EVM........................................................................................... 12

9 Connecting the USB Cable............................................................................................... 13

10 Default Jumper Settings.................................................................................................. 14

11 INA209EVM Software—Functioning Properly ......................................................................... 18

12 INA209EVM Software—No Communication With the USB Dig Platform .......................................... 19

13 INA209EVM Software—No Communication Between the USB Dig Platform and the INA209 ................. 20

14 EVM Controls Pull-Down Menu.......................................................................................... 23

15 Current Revision of Software ............................................................................................ 23

Windows is a registered trademark of Microsoft Corporation.

I2C is a trademark of NXP Semiconductors.

X2Y is a registered trademark of X2Y Attenuators LLC.

All other trademarks are the property of their respective owners.

SBOU055A–February 2008–Revised February 2010 INA209 Evaluation Module

Overview

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1 Overview

This document provides the information needed to set up and operate the INA209EVM evaluation module,

a test platform for the INA209 high-side current shunt monitor. For a more detailed description of the

INA209 product line, please refer to the product data sheet (SBOS403) available from the Texas

Instruments web site at http://www.ti.com. Support documents are listed in the section of this guide

entitled Related Documentation from Texas Instruments .

The INA209EVM is an evaluation module that is used to fully evaluate the INA209 current shunt monitor.

The INA209 is a mixed-signal current shunt monitor. The INA209EVM consists of two PCBs. One board

generates the digital signals (USB DIG Platform) required to communicate with the INA209

(INA209_Test_Board), and the second board contains the INA209, as well as support and configuration

circuitry.

NOTE: Much of the information contained in this document is also contained in the QuickStart

Video, which is included with the EVM kit. It is highly recommended that you watch this video

before using this EVM.

Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with

the INA209EVM.

1.1 INA209EVM Hardware

Figure 1 shows the hardware included with the INA209EVM kit. Contact the factory if any component is

missing. It is highly recommended that you check the TI web sit at http://www.ti.com to verify that you

have the latest software. It is also recommended that you watch the QuickStart Video (included on the

compact disk) before using the INA209EVM.

Figure 1. Hardware Included With the INA209EVM

2INA209 Evaluation Module SBOU055A–February 2008–Revised February 2010

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Overview

The complete kit includes the following items:

• INA209 test PCB

• USB Dig platform PCB

• USB cable

•QuickStart Video

1.2 Related Documentation from Texas Instruments

The following document provides information regarding Texas Instruments integrated circuits used in the

assembly of the INA209EVM. This document is available from the TI web site under literature number

SBOU055. Any letter appended to the literature number corresponds to the document revision that is

current at the time of the writing of this User’s Guide. Newer revisions may be available from the TI web

site at http://www.ti.com/, or call the Texas Instruments Literature Response Center at (800) 477-8924 or

the Product Information Center at (972) 644-5580. When ordering, identify the document by both title and

literature number.

Data Sheet Literature Number

INA209 Product Data Sheet SBOS403

1.3 If You Need Assistance

If you have questions about the INA209 evaluation module, send an e-mail to the Linear Application Team

at [email protected]. Include INA209EVM as the subject heading.

1.4 Information About Cautions and Warnings

This document contains caution statements.

CAUTION

This is an example of a caution statement. A caution statement describes a

situation that could potentially damage your software or equipment.

The information in a caution or a warning is provided for your protection. Please read each caution and

warning carefully.

1.5 FCC Warning

This equipment is intended for use in a laboratory test environment only. It generates, uses, and can

radiate radio frequency energy and has not been tested for compliance with the limits of computing

devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable

protection against radio frequency interference. Operation of this equipment in other environments may

cause interference with radio communications, in which case the user at his own expense is required to

take whatever measures may be required to correct this interference.

SBOU055A–February 2008–Revised February 2010 INA209 Evaluation Module

System Setup

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2 System Setup

Figure 2 shows the system setup for the INA209EVM. The PC runs software that communicates with the

USB Dig platform. The USB Dig platform generates the digital signals used to communicate with the

INA209 test board. Connectors on the INA209 test board allow for connection to the system that will be

monitored by the user.

Figure 2. Hardware Setup for the INA209EVM

Minimim PC operating requirements:

• Microsoft Windows®XP or higher

• USB port

• Works on US or European regional settings

4INA209 Evaluation Module SBOU055A–February 2008–Revised February 2010

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INA209

I C

Interface

V Supply

Switched 5.0V Power

DUT

I C

Address

Jumpers

General-Purpose

Digital I/O

Connects to Alert, Warning, Critical,

Overlimit, GPIO, and Convert

Connection to

Shunt Voltage

and GND

25-Pin

Male DSUB Signals

From USB DIG Platform

25-Pin

Female DSUB Signals

From USB DIG Platform

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System Setup

2.1 Theory of Operation for the INA209 Test Board Hardware

Figure 3 shows the block diagram of the INA209 test board. The INA209 test board functionality is

relatively simple. It provides connections to the I2C™ interface and general-purpose inputs/outputs

(GPIOs) on the USB Dig platform. It also provides connection points for external connection of the shunt

voltage, bus voltage, and GND on the system being measured.

Figure 3. Block Diagram of the INA209 Test Board

SBOU055A–February 2008–Revised February 2010 INA209 Evaluation Module

System Setup

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Figure 4 illustrates the system setup for the INA209 test board schematic. LEDs D1 through D6 are used

as indicators for many of the digital signals (for example, Warning, Critical, GPIO, etc). Jumpers JMP1

through JMP8 allow the configuration of A0 and A1. Connector T1 allows the connection of shunt and bus

voltages.

Figure 4. INA209 Test Board Schematic

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System Setup

2.2 Signal Definition of J1 (25-Pin Male DSUB) on the INA209 Test Board

Table 1 shows the different signals connected to J1 on the INA209 test board. Table 1 also identifies

signals connected to pins on J1 that are not used on the INA209 test board.

Table 1. Signal Definition of J1 (25-Pin Male DSUB) on the INA209 Test Board

J1 Pin Signal Used On This EVM? INA209 Pin

1 DAC A No —

2 DAC B No —

3 DAC C No —

4 DAC D No —

5 ADS1+ No —

6 ADS1– No —

7 ADS2+ No —

8 ADS2– No —

9 I2C_SCK No —

10 I2C_SDA2 No —

11 ONE_WIRE No —

12 I2C_SCK_ISO Yes SCL

13 I2C_SDA_ISO Yes SDA

14 XTR_LOOP+ No —

15 XTR_LOOP– No —

16 INA– No —

17 VDUT Yes VS

18 VCC No —

19 +15V No —

20 –15V No —

21 GND Yes GND

22 SPI_SCK No —

23 SPI_CS1 No —

24 SPI_DOUT No —

25 SPI_DIN1 No —

SBOU055A–February 2008–Revised February 2010 INA209 Evaluation Module

System Setup

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2.3 Signal Definition of J2 (25-Pin Female DSUB) on the INA209 Test Board

Table 2 shows the different signals connected to J2 on the INA209 test board. Table 2 also identifies

signals connected to pins on J2 that are not used on the INA209 test board.

Table 2. Signal Definition of J2 (25-Pin Female DSUB) on the INA209 Test Board

J1 Pin Signal Used On This EVM? INA209 Pin

1 NC No —

2 CTRL1 Yes Convert

3 CTRL2 Yes GPIO

4 CTRL3 No —

5 CTRL4 No —

6 CTRL5 No —

7 CTRL6 No —

8 CTRL7 No —

9 CTRL8 No —

10 MEAS1 Yes Warning

11 MEAS2 Yes GPIO

12 MEAS3 Yes Overlimit

13 MEAS4 Yes Critical

14 MEAS5 Yes ALT

15 MEAS6 No —

16 MEAS7 No —

17 MEAS8 No —

18 SPI_SCK No —

19 SPI_CS2 No —

20 SPI_DOUT2 No —

21 SPI_DIN2 No —

22 VDUT No VS

23 VCC No —

24 GND Yes GND

25 GND Yes GND

8INA209 Evaluation Module SBOU055A–February 2008–Revised February 2010

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TUSB3210

8052 C

with USB Interface

and UART

USB Bus

From Computer

3.3V

Regulator

Adjustable

Regulator

(3V to 5.5V)

VmC

3.3V

V_USB

8Kx8 Byte

EEPROM

Buffers and

Latches

Power

Switching

(3V to 5.5V)

DUT

Switched Power

I C, SPI

Control Bits and

Measure Bits

External

Power

Reset Button

and

Power-On Reset

USB Dig EVM

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System Setup

2.4 Theory of Operation For the USB Dig Platform

Figure 5 shows the block diagram for the USB Dig platform. This platform is a general-purpose data

acquisition system that is used on several different Texas Instruments evaluation modules. The block

diagram shown in Figure 5 illustrates the general platform outline.

The core component of the USB Dig platform is the TUSB3210.

Figure 5. Theory of Operation For the USB Dig Platform

SBOU055A–February 2008–Revised February 2010 INA209 Evaluation Module

INA209EVM Hardware Setup

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3 INA209EVM Hardware Setup

The INA209EVM hardware setup involves connecting the two halves of the EVM together, applying power,

connecting the USB cable, and setting the jumpers. This section covers the details of this procedure.

3.1 Electrostatic Discharge Warning

Many of the components on the INA209EVM are susceptible to damage by electrostatic discharge (ESD).

Customers are advised to observe proper ESD handling precautions when unpacking and handling the

EVM, including the use of a grounded wrist strap at an approved ESD workstation.

CAUTION

Failure to observe ESD handling procedures may result in damage to EVM

components.

3.2 Typical Hardware Connections

A typical INA209EVM hardware setup connects the two EVM PCBs, then supplying power, and

connecting an external shunt and load. The external connections may be the real-world system to which

the INA209 will be connected. Figure 6 shows the typical hardware connections.

Figure 6. Typical Hardware Connections

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