delta modulation

Discussion in 'General Electronics Chat' started by sneha sini, Jul 25, 2013.

  1. sneha sini

    Thread Starter New Member

    Jun 10, 2013
    5
    1
    for delta modulation, im using a comparator (LM 311) ; its output given to
    D flipflop and it is given to a 741 opamp and integrator . this output is given to the comparator as refernce input.
    what is the advantage of LM311 ? any advantage over 741
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,056
    3,245
    An LM311 is a comparator. A 741 is an op amp. Comparators have no internal compensation so generally respond much faster than op amps. The LM311 will also work down to 0V common-mode input with a single supply whereas the 741 can't.
     
  3. RichardO

    Well-Known Member

    May 4, 2013
    1,238
    385
    Actually, the LM311 inputs can only work down to about 1/2 volt above the negative supply rail. You may be thinking of the LM339.
     
Loading...