• State TI Thinks Resolved
  • Locked Locked
  • Replies 6 replies
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 1353 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS1282EVM-PDK: EVM setup with the default MMBO

Shashank Meti
Intellectual 1020 points

Part Number: ADS1282EVM-PDK

Hi,

I'm trying to setup the ADS1282EVM-PDK in default configuration & facing some issues with the software.

After the installation of ADCPro for the evaluation, the drivers are not getting installed. I tried to update the driver from the installation folder & getting the following error.

Also, the ADCPro GUI should show the ADS1282EVM(according to userguide) when prompted from EVM tab in the GUI, but even that is not showing up in the GUI.

Can you please address these issues?

Thanks,

Shashank

  • 0
    TI__Mastermind 44680 points

    Hi Shashank,

    What operating system are you trying to install this driver on?

    From the error message you showed, the problem appears to be that the driver is not signed. Unfortunately, we don't have a signed driver for the EVM so you may need to disable Windows 8 or Windows 10 driver signature enforcement to be able to install this driver. You can refer to the following web article with instructions how to disable diver signature enforcement:

    If you still find that you are having issues after disabling driver signature enforcement, you might try the stand-alone MMB0 driver installer, as we'd had issues with the driver installer that is built into the ADCPro installer. You can find this stand-alone installer at ftp.ti.com/.../ (select the appropriate subfolder based on your OS type).

    Let us know if that resolves the issue.

    I hope that helps,
    Chris

  • 0 in reply to Christopher Hall
    TI__Intellectual 1020 points

    Hi Chris,

    With the external FTDI driver, I'm able to establish the USB connection but however facing issues with firmware download. the following error message shows up after the USB connection is established.

    Even after multiple RESET & tries, the issue persists.

    I'm trying to setup a nominal working demo with default configuration using ADS1282PDK, the setup is as follows:

    6V input to MMBO at J2(DC_IN) & the USB type A from MMBO to computer. Is this 6V sufficient to power the ADS & MMBO or any other power inputs are required?

    Thanks,

    Shashank

  • 0 in reply to Shashank Meti
    TI__Intellectual 1020 points
    Hi Chris,

    In addition to the previous query, I'm trying to use it in Bipolar mode, can you suggest the required power supplies & jumper settings (as from the previous threads, the power supply requirements are ambiguous) ?
    The PDK version is Rev E. The computer OS is windows 10 - 64 bit

    Thanks,
    Shashank
  • 0 in reply to Shashank Meti
    TI__Mastermind 44680 points

    Hi Shashank,

    The MMB0 provides for some of the voltage supplies required to operate the ADS1282EVM, however, there are three external supplies that you will need to provide to operate the ADS1282 in a bipolar configuration.

    1. "-5VA" rail requires a -5V external supply in order for U13 to generate the -2.5V AVSS supply for the ADS1282.
    2. "+VA" rail requires a 10-15V external supply to power the U4 and U5 amplifiers.

    3. "-VA" rail requires a -10 to -15V external supply to power the U4 and U5 amplifiers.

    All of these supplies can be connected to the J14 header on the MMB0. Just make sure that the J13A jumper on the MMB0 is removed, or else you will short the "+VA" and "+5VA" supplies together.

    I know it's odd, but the EVM won't connect to the software if these supplies have not been provided, so try connecting to the EVM again after providing these external supplies.

    Best regards,
    Chris

  • 0 in reply to Christopher Hall
    TI__Intellectual 1020 points
    Hi Chris,

    We were able to resolve the issue with -5 volt input to MMBO. Can you please help me in understanding why is that required for the EVM to get detected & firmware to download?

    Thanks,
    Shashank
  • 0 in reply to Shashank Meti
    TI__Mastermind 44680 points
    Hi Shashank,

    Without the -5V supply, the ADS1282EVM will not generate the -2.5V AVSS power rail, which will cause the analog power supply to float. As shown in Figure 51 of the datasheet, the ADS1282 requires both the analog and digital power supplies before it is operational.

    If you're using the unipolar (AVDD = 5V, AVSS = 0V) analog supply then you don't need to worry about providing the -5VA external supply.

    Regarding the +VA and -VA +/-10V supplies, I'm not exactly sure myself as to why those power supplies are required to establish communication with the EVM since this supplies are only used to power the on-board opamps. Perhaps this is a latch-up issue; however, from experience I can tell you that I've always had to provide theses supplies to get the EVM to connect to ADCPro.

    Have you looked at figure 7 in the ADS1282EVM-PDK User's Guide? It shows a diagram of where to connect the +VA and -VA power supplies. Just remember to also connect the power supply ground to J14 as well.

    Best regards,
    Chris