1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

About VT(threshold voltage) of MOS

  1. Dec 15, 2009 #1
    1. The problem statement, all variables and given/known data

    (1)what's the relationship between VT and channel length, width?
    (2)In the formula of VT, when calculation of oxide capacitor voltage, namely, Vox=Q(inv)/Cox
    , why Cox is per square capacitance?

    2. Relevant equations

    eq6_3_17.gif

    3. Thank you very much!
     

    Attached Files:

  2. jcsd
  3. Dec 15, 2009 #2
    1)-The relationship between Vt and the channel lenght is called short channel effect. If you search on the web you can find enough information. The third term in your equation needs a modification to see the relation between Vt and L.
    2)- Cox's units can be modified depend on the units of the charges density. The aim is to get volts out of the devision.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: About VT(threshold voltage) of MOS
Loading...