enhancement pmos small signal analysis

Discussion in 'Homework Help' started by yoamocuy, Dec 5, 2010.

  1. yoamocuy

    Thread Starter Active Member

    Oct 7, 2009
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    I've been looking through problems for a final review study and ran across a problem that I'm struggling a bit with. I'm supposed to find Av and Gv for the enhancement PMOS shown in the attachment. The problem I'm having is drawing it in H parameter form. I've never drawn a PMOS in small signal analysis before and I haven't been able to find examples online. Do you just switch the direction of the arrow for gmVGS? I attached what I think it should look like but I'm not sure. Could someone verify my work? Thanks.
     
  2. mik3

    Senior Member

    Feb 4, 2008
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  3. yoamocuy

    Thread Starter Active Member

    Oct 7, 2009
    80
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    I drew it at the output. I just moved it over to the left side. Notice that I have it in parallel with Re and left out R1 and R2 since they are bypassed.
     
  4. yoamocuy

    Thread Starter Active Member

    Oct 7, 2009
    80
    0
    nvm that is a nmos rather than a pmos apparently so I figured it out. Thanks anyways
     
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