Weighted-resistor D/A Converter

Discussion in 'Homework Help' started by zaidqais, May 7, 2009.

  1. zaidqais

    Thread Starter Member

    Feb 14, 2009
    16
    0
    Hi

    For the following D/A converter

    [​IMG]

    what is the value of Rf which makes the output 8 volt if the all inputs are High ??

    Thank you
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Calculate the summed currents through the R/2R ladder. Calculate Rf to give 8 volts out for that level of current into the summing junction.
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,344
Loading...