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ADS54J60EVM: ADS54J60EVM + TSW14J56 lower sampling rate with external clock

QUENTIN STAINER
Prodigy 50 points
Part Number: ADS54J60EVM
Other Parts Discussed in Thread: ADS54J60

Hello TI Team,


I am currently working on an acquisition setup involving a pulse generator and a TSW14J56 with an ADS54J60EVM.

My application requires to acquire several millions samples in a burst, synced with a clock from the pulse generator. From the datasheet of the ADS54J60 it appears that the minimum sampling frequency is 250 MHz, but I have been able to make it work at 122.88 MHz using the corresponding firmware.

However, the sampling rate I need is much lower, with a sample very 500 ns to 2 us. What attracted me to the TSW14J56 was the USB3.0 and large RAM available, which would maximum data transfer to the computer.

Is there a way to have this kind of low sampling rate, maybe by skipping some samples either loaded to the RAM or transfered to the PC ?

Is my system way oversized for my application and if this is the case, what would be the configuration you would recommend ?

Thank you in advance,

Best regards.

  • 0
    TI__Genius 15321 points

    Hi Quentin,

    Thank you for your question. I am checking with our team and I will get back to you shortly.

  • 0 in reply to Amy
    TI__Genius 15321 points

    For our clarification, it sounds like your application needs to sample between 500 kSPS to 2 MSPS, is this correct? EVM’s around this sampling rate do not use the TSW data capture cards, as they only support very high sampling / GSPS ADCs. If you give us further information about your system application, we can help guide you toward a better product solution.

  • 0 in reply to Amy
    Prodigy 50 points

    Hi Amy,

    Yes we need this kind of sampling range, ideally if we can reach up to 10 MSPS it would be comfortable, but 500 kSPS must be accessible. I can provide you with further informations but I would rather not disclose it publicly on this forum as it concerns confidential R&D development.

    Is there any way to discuss by private messages ?

  • +1 in reply to QUENTIN STAINER
    TI__Genius 15321 points

    Hi Quentin,

    I sent you a friend request so that you can private message me to discuss. 

    Amy