Jump to content
Electronics-Lab.com Community

MOSFET model in SPICE


Recommended Posts

Hello everybody! I have to complete a design of an OpAmp using CMOS technology and the given model for the nMOS transistors is the following:

.model Mn NMOS(LEVEL=2 LD=0.1e-6 VTO=0.77 KP=77e-6 GAMMA=0.35 PHI=0.76 CJ=0.31e-3
+CJSW=0.17e-9 CGSO=0.19e-9 CGDO=0.19e-9 CGBO=0.3e-9 NSUB=1.9e16 NFS=1e10 TOX=200e-10
+XJ=0.14e-6 UCRIT=1.5e4 UEXP=0.077 DELTA=2 KF=4e-13 AF=1.2)

My problem is that I am not sure what exactly is the formula that computes the Idrain of the MOS.

Of course we know that in saturation

ID=k*(W/L)*(VGS-Vth)^2, where k=K/(1+

Link to comment
Share on other sites


Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
  • Create New...