MOSFET Resistance rout and Rds (ON)

[ams_ei]

Hi,

Would you be kind to answer my following question?

Is Rds(ON) and rout [=1/(lambda*Id)] the same of any MOSFET?

Thank you.

 

[D.A.(Tony)Stewart]

RdsOn applies when Vgs >> Vth
Rout applies when Vgs ~ Vth and used for gain control or linear operation

 

[ams_ei]

RdsOn applies when Vgs >> Vth
Rout applies when Vgs ~ Vth and used for gain control or linear operation

Hi,

Thank you for your reply.
Does Rds(ON) depends on device geometry?
Could you please explain me?

Regards.

 

[andre_luis]

Does Rds(ON) depends on device geometry?

It depends on the channel width and length, you surely can find different Mosfet devices with the same Rds(on).

 

[ams_ei]

It depends on the channel width and length, you surely can find different Mosfet devices with the same Rds(on).

Hi,
I have checked with TSMC180nm process technology file (rf018.scs).
Nowhere, I have found a device parameter called rds.
Could you please guide me where where can I get the value of rds(on) for nmos2v cell of 180nm technology?

Thank you.

With regards.