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Good solution for prototyping a high speed ADC and DSP together?

Paul Schmalenberg
Prodigy 10 points

Hi all,

I'm looking to put together an high speed ADC and DSP for some embedded prototyping. There are a lot of eval kits for ADCs, and a lot for DSPs, but none seem to go directly together.

The ADC spec I'm looking for is 2ch, 40MSPS, 12bit performance. It only needs to take data in short bursts (<5ms) then let the DSP process on the data for a bit.

So, my question is how to make the hardware connection? I understand about LVDS or other serial standards, but I'm not sure how to tell if a DSP can handle a CMOS parallel output from an ADC. Or if that is even a good idea. 

My second question is, if the ADC and DSP can come together using LVDS or CMOS parallel, is there a ready-made evaluation solution for this? Or a couple of them that can be rigged together? I'd really like to avoid making, assembling and debugging my own PCB.

I'm hoping to avoid using a FPGA to reduce complexity, because the ready to go features of DSP (like GPIO/SPI/I2C to control my peripheral) are really nice.

Something like the 12.5MSPS Delfino would be perfect aside from the underspecced ADC, and I got one just in case I can reduce the demand on the ADC on the peripheral side.

Thanks for your time,

Paul

  • 0
    TI__Mastermind 20580 points
    Hi Paul,

    I have assigned this to our data converter application engineer. Hopefully she will be able to point you in the right direction on this. Also, you may want to look at the DSP and Data converter forums as they may have examples as well, even though they may be commercial devices the same interfaces and concepts would apply for automotive, you would then just need to look for an AEC-Q100 ADC.

    Scott
  • 0
    TI__Mastermind 23810 points

    Paul,

    First, are you looking for an automotive ADC that fits those specs? The closest one I could find is the ADS5204-Q1 (40Msps, 2 channel, but only 10 bits).

    As far as ready-made platforms which include the DSP and a high-speed ADC, I recommend asking in the processor forums as Scott already suggested.  There might also be some TI designs that could help.  These typically include everything needed to build the board.  I looked briefly and some that might be of interest are:

    www.ti.com/.../TIDEP0060

    www.ti.com/.../TIDEP0034

    Thanks,

    -Clancy