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ADS1247EVM: What TI micro controller to use with EVM

Siddarth Subramaniam
Prodigy 60 points
Part Number: ADS1247EVM
Other Parts Discussed in Thread: ADS1247, ADS124S08, ADS124S08EVM

Hi,

I was looking to purchase a ADS 1247 EVM to use with my ADS1247 for an 4 wire rtd setup. I was looking through the manual for the ADS 1247 EVM to see what TI micro controllers are compatible with the device but all I could find was 

"The digital control signals can be applied directly to J7 (top or bottom side). The modular ADS1247EVM can also be connected directly to a DSP or microcontroller interface board, such as the 5-6K Interface or HPA-MCU Interface boards available from Texas Instruments, or the MMB3 if purchased as part of the ADS1247EVM-PDK. For a list of compatible interface and/or accessory boards for the EVM or the ADS1247, see the relevant product folder on the TI web site."

The 5-6k is another EVM board and the HPA-MCU is no longer available and I cannot find where the compatible devices are listed. I was wondering if someone can point me in the right direction.

Thanks,

Sid

  • 0
    TI__Guru 55342 points

    Hi Sid,

    The ADS1247 is an older device and the PDK version of the EVM is no longer offered. Are you planning to implement the ADS1247 in your own design and want to test the performance or are you just hoping to get a better understanding of RTD measurements? 

    Using the ADS124S08EVM may be a viable option if you just want to take some sample data. The ADS124S08 is the latest and greatest device for measuring RTD's, with better performance than the ADS1247. If you're looking to implement a full design then you will need to select an MCU and interface it with the ADS1247EVM.  Posting on the MCU forum will be a better route as I am not familiar with the portfolio and am not sure what exactly you need for your system. 

  • 0 in reply to Alexander Smith
    Prodigy 60 points

    HI Alex,

    Thanks for getting back to me. Ideally we do not want to use a PC to collect and analyze the data. The goal is to collect the temperature readings using the ADS1247 and ADS1247EVM and then using a micro contoller, take that data and send it wirelessly to a server so it may be added to a website. We do not want to have a PC constantly running in the lab so using the micro controller was supposed to be the substitute. 

    I saw the ADS124S08 and EVM are only PC compatible for interpreting the data? Does that ADC and EVM have micro controller capabilities or only PC using the provided software?

    Thanks, Sid 

  • 0 in reply to Siddarth Subramaniam
    TI__Guru 55342 points

    Hi Sid,

    Thanks for the background. Most (if not all) of our ADC EVMs are going to either be standalone like the ADS1247EVM or interface with a PC for collecting and displaying data. 

    If sending the data wirelessly is a must, our data converter EVM alone will not be able to do it. However, there may be another EVM(s) within TI that can assist with this - I'm not sure, I recommend consulting both the MCU (MSP430, C2000, etc) and wireless transmission forums for help. 

    Your test setup would like something like:

    RTD -> ADS1247EVM -> MCU EVM -> Wireless EVM -> Server -> Website

    There may be MCU EVM's that incorporate wireless transmission capability, honestly I am not sure. 

    As for understanding the communication between the ADS1247 and the MCU, please consult the 9.5 Programming section of the datasheet. You will need at least a few input/output channels and have the capability of generating clock sequences. If you have any specific questions around the ADS1247 I am happy to help.  

  • 0 in reply to Alexander Smith
    Prodigy 60 points

    Hi Alex,

    Thanks for the information. In the guide for the ADS1247 EVM, section 7.2, it says MCU are supported but I am unable to find where it says what MCU made by TI are compatible. But maybe I am misunderstanding the information. Are you saying the EVM is designed to used alone with a ADS1247? But if you don't have a PDK feature how do you analyze the data from the EVM. I guess my question is does the ADS1247 EVM work with MCU and if so what TI MCU do I use.

    Thanks, Sid

  • 0 in reply to Siddarth Subramaniam
    TI__Guru 55342 points

    Hi Sid,

    There are many MCU's made by TI that will work with the ADS1247, listing all of them is not practical. 

    The ADS1247EVM is aboard meant to make it easy to evaluate the performance of the ADS1247. To do this, you will need to interface the ADS1247EVM board with an MCU. The connection between the MCU and a PC will be responsible for analyzing the data. 

    The ADS1247EVM-PDK is no longer manufactured. The ADS1247EVM-PDK had an additional board with an MCU on it, that would allow you to use the PC the display the data, change registers, etc. 

    Like I have already said in previous posts, please start a new thread on the relevant MCU forum for help with selecting an MCU EVM to interface with the ADS1247EVM. 

  • 0 in reply to Alexander Smith
    Prodigy 60 points

    Hi,

    I understand and I was able to find a MCU using the forums. Since this is an old ADC and EVM, is there a better ADC and EVM I can use for my setup. I know you mentioned the ADS124S08.  I saw that the ADS 124S08 EVM only has a usb to connect to a computer but can it also be configured with an MCU?

    Thanks, Sid

  • 0 in reply to Siddarth Subramaniam
    TI__Guru 55342 points

    Hi Sid,

    Yes I believe it can be interfaced with an external MCU, you would simply use the headers going down the middle of the board and use the ones on the bottom of the row to communicate with the ADS124S08.