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High speed adcs to TSW1200: Need help

Srivathsan Vasudevan
Prodigy 20 points
Other Parts Discussed in Thread: ADS6422

Hi,

I am new to TI and to ADCS and DSPs. Need some help on the following

I would like to use a high speed ADC to capture a signal from an ultrasound sensor. I have found out I need something like 60MSPS ADC with 4 channels. I have identified ADS6422 EVM and TSW1200 EVM (Capture Card). What I need to do now is to capture the entire time domain signal and store it in a computer. Is this possible using the above two EVMs?

If the answer is yes, then I would like to use the stored data to do some signal processing in MATLAB. In future, is it possible to dump the entire MATLAB program in the FPGA provided in TSW1200?

In addition to the above mentioned applications, I would also like to send trigger signals to another 2 devices once I receive the data from the ADC. Is it possible to program that in TSW1200?

Please clarify and help me please.

Many thanks,

Sriv

  • 0
    TI__Mastermind 29220 points

    Hi,

    i need to know more about exactly what you wish to do before i can make a recommendation.  What do you mean by 'entire time domain signal'?  Do you mean capturing from all four channels simultaneously or that there is a certain capture size required?  In either event, i would recommend lookng at the newer TSW1400 capture card in place of the TSW1200.  The TSW1200 is limited to a capture depth of 64K samples.  The TSW1400 can capture from four channels simultaneously and has a 1Gbyte memory stick on board to capture as much as 512M samples.

    Either capture card allows you to dump the captured data to a file on the PC for later processing by Matlab or any other programming language.  Either can save the sample data in a csv (comma separated value) file that can be imported into a spreadsheet, Matlab, or other tools for later analysis.

    The TSW1400 has SMA connections for a trigger input to start the capture, and trigger outputs to trigger EVMs or sync multiple capture cards, but the trigger output is to start a capture.  Not a trigger to alert that the capture has finished.  There is also the possibility to write you own Matlab code to control the capture of the TSW1400 from you code and get the data from the capture card for your own processing - bypassing the use of the GUI that comes with the TSW1400.  If you go this route, it may be possible to then make the TSW1400 output a trigger signal after the capture is complete.  I will have to look into this.  But at present we don't have a function to trigger *after* a capture.

    Regards,

    Richard P.