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Specs for CD4007

  1. Oct 9, 2013 #1
    I'm looking for the threshold voltage Vtn, the MOSFET transconductance parameter kn and the channel length modulation parameter for MOSFET 6 on the CD4007. Where can I look these values up?
     
  2. jcsd
  3. Oct 9, 2013 #2

    davenn

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    Science Advisor
    Gold Member

    did you try the datasheet ?
    would be the obvious starting place :wink:

    cheers
    Dave
     
  4. Oct 9, 2013 #3

    meBigGuy

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    Gold Member

    Did YOU try the data sheet? Not such an obvious place for what was being asked.

    Moving on:

    OP, Which FET do you consider to be #6?

    The answer would be foundry and process dependent and I doubt it is available on any data sheet. Maybe you can look for a spice model and either read the model (if it is readable), or use spice to extract the data.

    Here is a lab example
    http://www.ece.ucsb.edu/Faculty/rodwell/Classes/ece2c/labs/Lab_2_2C_2007.pdf

    EDIT

    Here is the spice model
    CD4007 NMOS and PMOS transistor SPICE models

    * Typical - Typical Condition



    .model MbreakND NMOS
    + Level=1 Gamma= 0 Xj=0
    + Tox=1200n Phi=.6 Rs=0 Kp=111u Vto=2.0 Lambda=0.01
    + Rd=0 Cbd=2.0p Cbs=2.0p Pb=.8 Cgso=0.1p
    + Cgdo=0.1p Is=16.64p N=1

    *The default W and L is 30 and 10 um respectively and AD and AS
    *should not be included.


    .model MbreakPD PMOS
    + Level=1 Gamma= 0 Xj=0
    + Tox=1200n Phi=.6 Rs=0 Kp=55u Vto=-1.5 Lambda=0.04
    + Rd=0 Cbd=4.0p Cbs=4.0p Pb=.8 Cgso=0.2p
    + Cgdo=0.2p Is=16.64p N=1

    *The default W and L is 60 and 10 um respectively and AD and AS
    *should not be included.
     
    Last edited: Oct 9, 2013
  5. Oct 9, 2013 #4
    Thanks, I'll run a SPICE model to get it!
     
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