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Design >> Analog Design >> Finding Rdson for Mosfet (CMOS) in 22nm
https://designers-guide.org/forum/YaBB.pl?num=1696407454

Message started by aguntuk on Oct 4^th, 2023, 1:17am

Title: Finding Rdson for Mosfet (CMOS) in 22nm
Post by aguntuk on Oct 4^th, 2023, 1:17am

To size mosfet (22nm technology), I need to know the on-resistance (Rdson) of the mosfet. Now How can I find the one resistance (RDSon) in cadence virtuoso for the MOSFET? DC operating point is not giving me any value for it. Is there any way to simulate? For example, for nmos, if I use voltage source at drain as supply and also use voltage source at gate voltage Vgs as input, then draw Vds/Ids across Vgs should give me Rdson (on resistance) - Is that the way to find out the on resistance for specific gate voltage or Vgs? I am working in Cadence Virtuoso.

Title: Re: Finding Rdson for Mosfet (CMOS) in 22nm
Post by smlogan on Oct 12^th, 2023, 11:48am

Dear aguntuk,

> Now How can I find the one resistance (RDSon) in cadence virtuoso for the
MOSFET?

This topic was discussed in the Cadence Forum at URL:

https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/45536/finding-large-signal-drain-source-resistance-rds-for-bsim-cmg-106-1-model-in-spectre-by-dc-analysis

You can either simulate it as outlined in the Forum post or define an output as vds/ids as also stated in the Forum post.

Shawn