Test Procedure For INA226EVM

4/3/10

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Required Order

1. Verify the Required Hardware and Software2. Install INA226EVM Software3. Verify Hardware4. Run INA226EVM Test Procedure5. Label Passing Units6. Ship Passing Units

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Required Hardware and Software

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No. Item Qty Description / Use

1 INA226EVM 1 Completely built INA226EVM PCB with INA226 part inserted.

2 USB Extender Cable 1 Connects to USB SM-DIG .

3 USB DIG Platform 1 Sample of working USB SM-DIG platform used as a digital data acquisition system

4 Software and Documentation Disk

1 Contains all software and documentation required for the INA226EVM test procedure.

Items provided by Texas Instruments

Items provided by Manufacture / Test Vendor

1 PC with windows operating system

1 For test software.

2 Digital Multimeter 1 Volt Meter to measure the voltage being supplied to the INA226 Test Board

3 Analog power supply 1 Supplies power to Rshunt and Rload to test the INA226

4 Resistors 1 1 47ohm and 1 10kohm standard tolerance resistor.

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EVM Installation Procedure

Introduction Verify Hardware Install Software Verify Hardware Run Test Procedure Label Passing Units Ship Passing Units Conclusion

INA226EVM software is on the CD provided by Texas Instruments

Double Click on the setup.exe file to begin installation of the test software

Introduction Verify Hardware Install Software Verify Hardware Run Test Procedure Label Passing Units Ship Passing Units Conclusion

Introduction Verify Hardware Install Software Verify Hardware Run Test Procedure Label Passing Units Ship Passing Units Conclusion

Allow the setup to initialize and click next

Accept both license agreements

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Press Next on the Start Installation dialog, the program will install, then select Finish

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Installing …

Hardware Setup for Test

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Introduction Verify Hardware Install Software Verify Hardware Run Test Procedure Label Passing Units Ship Passing Units Conclusion

Connections for INA226EVM Test

Analog Supply

USB SM-DIG INA226EVMPC

Sh

unt

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Set Jumpers on Boards

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Connect Power and USB Cables

Connect USB extender cable to the board and PC

The first time a USB DIG Board is plugged into your computer you may get a

message

Connect the 10-pin connector to the SM-DIG and PCB

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Apply INA226EVM Interface Board Power

Apply 10v power supply voltage to terminal block 3. The high side of the supply should be connected to Vbus and the low side should be connected to GND.

10k Ω Resistor (RLOAD)47Ω resistor (RSHUNT)

Shunt Wire from Vin- to GND

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Run Test Procedure

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If it comes up with an error, ensure that the USB SM-DIG is securely plugged in. Also try restarting the program.

Launch the INA226 software that was recently installed. The program should look like this:

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Program Setup

Enter the value 109 into the calibration register box and hit enter.

Enter in the exact resistance of the Rshunt into the “Resistance” box and hit enter. Also, enter the Max current as “10m” and hit enter.

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Program Evaluation

Ensure the values are close to the table below

Select the “Read all Reg” buttons shown to the right. This should update the value at the bottom of the program.

Channel Output

Vbus ~10 V

Shunt Voltage ~50mV

Current ~1mA

Power ~10mW

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Label Passing Units

If the designated part has passed the tests, label the passing unit with a QC sticker on the bottom of

the board as shown below

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Tested Device

This test is designed to test the Read/Writecapability of the INA226EVM. Once the test

has been passed, the EVM is ready to be shipped.

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Thank you for choosing Texas Instruments®

Any questions, comments, or concerns should be directed to your TI representative.