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ADS1274EVM-PDK Interface and Data Transfer Speed

Jordan Besnoff
Prodigy 10 points
Other Parts Discussed in Thread: ADS1274, ADCPRO

I'm looking into purchasing the ADS1274EVM-PDK, which is a high speed (128k sampling rate) ADC. It comes with the MMB0 which allows one to transfer data to a computer.

The MMB0 has a USB port to connect to a PC and use provided software to record data from the ADC. I was wondering if it's possible to communicate with the ADC through other software such as Matlab?

Also, what sort of data transfer speed can be achieved using the MMB0 interface to a PC? Ideally, I would like to to be able to capture data from a single channel and transfer it to the PC in about 100 ms. Is this speed possible?

Thanks,

Jordan

  • 0
    TI__Guru 66186 points

    Hi Jordan,

    Thanks for your interest in the ADS1274!

    The EVM-PDK allows you to collect a contiguous block of samples through ADCPro. This raw data can be further analyzed by the Analysis tools included with ADCPro, or it can be saved to a file and imported by another program, like MATLAB, for you to conduct your own analysis.

    Once the "collect" command is sent to EVM, the ADS1274 will output the requested number of samples at the set data rate. At 128kSPS, you can collect 8,192 samples in 64ms, which should be enough for an FFT analysis. I honestly don't know how long the data takes to transfer over USB to the PC GUI, but I imagine that it takes longer than 100ms. I know that it occurs in 256-byte packets, but that's all I can tell you.

    Best Regards,