+ Post New Thread
Results 1 to 5 of 5
  1. #1
    Member level 2
    Points: 439, Level: 4

    Join Date
    Apr 2014
    Posts
    46
    Helped
    1 / 1
    Points
    439
    Level
    4

    can someone please explain the concept of weak 0 and weak 1?

    i know that PMOS is used for getting strong 1 and NMOS for getting strong 0. Also, if w will use NMOS as pull up it will only b able to pull the output upto vdd-vt and in case of PMOS in pull down it will be vss+vt. so can someone please explain this voltage changes at device level with respect to the working of MOSFET or please suggest any suitable links or documents to read.


    thanks in advance

    •   Alt22nd May 2014, 07:12

      advertising

        
       

  2. #2
    Advanced Member level 3
    Points: 7,762, Level: 21
    Achievements:
    7 years registered
    yadavvlsi's Avatar
    Join Date
    Nov 2010
    Location
    Bangalore, India
    Posts
    975
    Helped
    481 / 481
    Points
    7,762
    Level
    21

    Re: can someone please explain the concept of weak 0 and weak 1?

    This results in less output voltage swing and less noise margins.
    http://www.evlsi.com/viewtopic.php?f=11&t=6



    •   Alt22nd May 2014, 07:57

      advertising

        
       

  3. #3
    Member level 2
    Points: 439, Level: 4

    Join Date
    Apr 2014
    Posts
    46
    Helped
    1 / 1
    Points
    439
    Level
    4

    Re: can someone please explain the concept of weak 0 and weak 1?

    thanks yadavvlsi...
    i already know it...but i want to know exactly that how the voltage will be vdd-vt and vss+vt ?
    can you please explain it?



    •   Alt22nd May 2014, 13:22

      advertising

        
       

  4. #4
    Advanced Member level 3
    Points: 7,762, Level: 21
    Achievements:
    7 years registered
    yadavvlsi's Avatar
    Join Date
    Nov 2010
    Location
    Bangalore, India
    Posts
    975
    Helped
    481 / 481
    Points
    7,762
    Level
    21

    Re: can someone please explain the concept of weak 0 and weak 1?



    1 members found this post helpful.

  5. #5
    Member level 2
    Points: 439, Level: 4

    Join Date
    Apr 2014
    Posts
    46
    Helped
    1 / 1
    Points
    439
    Level
    4

    Re: can someone please explain the concept of weak 0 and weak 1?

    thanks...now i got it...



--[[ ]]--