Connect with us

When using DAC/ADC pairs, which way is more resistant to noise and nonlinearities?

Discussion in 'General Electronics' started by Frank, Dec 12, 2005.

Scroll to continue with content
  1. Frank

    Frank Guest

    I am inexperienced with analog thingy.

    My digital clock is 40MHz, modulates a 10mbps bit stream into some
    waveforms.
    The modulated output value lies between two narrow bands, 0-63 for input
    zero
    or 960-1023 for input ones, when input bit flips, output also change between
    lower
    band and higher band. When input bit remain unchanged, output flactuates
    within
    their narrow bands.

    Now my task is to send this waveform through TI DAC290x-EVM (DAC chip) and
    Analog AD9218 (ADC chip), and make the demodulator demodulate the ADC
    outputs.

    My digital outputs are in 2's compliment, I can easily convert that into
    binary value (thus
    between 448-576) if it's advantageous.

    Which is better option?
     
  2. Frank

    Frank Guest

    Does it make sense to shift the binary value left/right by 3 bits in my
    digital chip?
    It's likely to make it more resilient against gaussian noise in analog
    domain.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-