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Original question:

PGA309: PGA309 EVM driver

PGA309: PGA309 PCB EVM

Steven Pennington
Prodigy 150 points
Part Number: PGA309

I would like to attach my PGA309 PCB design to the PGA309 EVM (DAQ).  I am sure the info is out there (I think I can derive it from the pinout, but I want to make sure). Can someone provide a recommend connection diagram? I am using I2C for programing. (my first try didn't work, so I want to be a bit more careful).

Thanks for any help you can provide.

Steve 

  • 0
    Prodigy 150 points

    I am attaching my schematic as well to help with the interface. I also have the PGA309 multi-cal system which I have not set up yet.

    I welcome any comments.

    /cfs-file/__key/communityserver-discussions-components-files/14/PGA309-Voltage.pdf

  • 0 in reply to Steven Pennington
    TI__Guru 55466 points

    Hello Steven,

    Below is a list with the basic connections for the custom PGA309 board to the USB DAQ platform. The PGA309 EVM includes the sensor emulator DAC circuit controlled by the USB DAQ; and some of these connections will not be supported on the PGA309 custom board.

    Since the eval board has jumper options depending on the desired configuration, please review the attached for functionality you may need to support on the custom board, and let me know if you have questions / feedback.  Below is also a link PGA309EVM schematic for your reference.

    Thank you and Regards,

    Luis

     

    PGA309EVM schematic:

    http://www.ti.com/lit/df/sbor010/sbor010.pdf

  • 0 in reply to Luis Chioye
    Prodigy 150 points

    Thank you.

    This worked on the OW interface but not the I2C, Interface.  But I am able to move forward.

    I do have another question (sorry), I can not seem to be able to load a different profile then the defaulted one. I want to set a new configuration (pre-cal) but it never seems to change. It mentioned administrator rights, which I have.  

    Sorry for all the questions, they are in a hurry to get this complete.  The good news, the PCB is working well with the sensor.  Hopefully once I get all the issues worked out we go to production with our sensor (many thousand a year).

    Regards,

    Steve

  • 0 in reply to Steven Pennington
    TI__Guru 55466 points

    Hi Steve,

    Thank you for the update.  I recently refreshed to a new PC with Windows 10, and although I have administrator privileges, and installed the software properly, I ran into an issue when trying to modify the Pre-Cal file, and sensor files used by the PGA309 GUI.  In order to resolve the issue, I had to manually change the permissions on the folders.  The following directories may need to add full control to the user:

    :\Program Files (x86)\proj_PGA309EVM-USB\Model_Files
    :\Program Files (x86)\proj_PGA309EVM-USB\Pre_Cal_Files
    :\Program Files (x86)\proj_PGA309EVM-USB\Sensor_Emulator_Files.

    Please see example below, let me know if you still have issue writing/saving the files.

    Thank you and Best Regards,

    Many Thanks,

    Kind Regards,

    Luis 

    In order to allow the user full control, please perform the following steps:

    1) Using Windows explorer, Browse to the folder,

    Root directoy:\Program Files (x86)\proj_PGA309EVM-USB\Pre_Cal_Files

    - Right click on the folder on explorer, select properties

    2) Grant full-control to the user as shown below:

    - Select Security, select your user name on the PC, and check mark "allow".

    - Click on "Apply" and click on "OK"