What is the impact of the transistor's width to threshold voltage?

[yanyan300300]

At least for long channel model, transistor's width should have any effects on the threshold voltage. But how about short channel? Anyone knows? Thanks!

 

[haykp]

increasing the width of transistor increases the threshold voltage. You can get this info from transistor models file.

 

[yanyan300300]

Thanks for reply. Can you also give some explanations?

 

[ee2020]

There are some "narrow channel" effects in short channel mosfets, such as dependency of Vth on W.
Refer to "operation and modeling of the mos transistor" by Tsividis.

 

[yanyan300300]

Thanks. This is very helpful.