+ Post New Thread
Results 1 to 3 of 3
  1. #1
    Member level 2
    Points: 406, Level: 4

    Join Date
    Aug 2013
    Posts
    50
    Helped
    0 / 0
    Points
    406
    Level
    4

    Small signal model CMOS !!

    Hi all !

    I would like to know why in the small signal analysis in CMOS technology, the current source becomes an open circuit.

    Regards,

    Joaquin

    •   AltAdvertisement

        
       

  2. #2
    Full Member level 1
    Points: 1,746, Level: 9

    Join Date
    Oct 2012
    Location
    India
    Posts
    102
    Helped
    68 / 68
    Points
    1,746
    Level
    9

    Re: Small signal model CMOS !!

    Quote Originally Posted by biolycans View Post
    .... in the small signal analysis in CMOS technology, the current source becomes an open circuit.
    Hi,

    Can to tell which current source you are talking about .... In any MOS small signal model there is a voltage dependent current source (gm Vgs) .... but it becomes open ckt only if Vgs = 0 else not ....



    •   AltAdvertisement

        
       

  3. #3
    Member level 3
    Points: 1,779, Level: 9
    Achievements:
    7 years registered

    Join Date
    Jan 2009
    Posts
    54
    Helped
    7 / 7
    Points
    1,779
    Level
    9

    Re: Small signal model CMOS !!

    The internal resistance of an ideal current source is infinite. An independent current source with zero current is identical to an ideal open circuit.



--[[ ]]--