CMOS related question

[sp3]

Hi all,

Can anyone of you answer the following question:

In a nmos transistor, how does the current flows from drain to source in saturation region when the channel is pinched off ??

Thanks,
sp3

 

[ieropsaltic]

At pinch off, the electric field at the pinch off (depleted) region is very high. this field attracts the current carrying charges flowing at the channel.

 

[A.Anand Srinivasan]

even though it is said to be pinched off.... there is still a small channel....

 

[arvkum02]

even though it is said to be pinched off.... there is still a small channel....

at pinch off VGD is 0V but VDS is there which produce a lateral electric field and push the electrons towards drain from source.....hope this will help.