airace
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Hi,
I am trying to measure Idrive process spread for PMOS/NMOS (TSMC 0.18um). The test setup i have used is below :-
The NMOS size i used is actually 50/0.18..and simulation is with specter with conditions being Vgs =1.8 and Idrive to be measured at Vds = 1.8 v
Problem : Id is reaching Imax/Imelt of source - bulk region before Vds = 1.8v and specter linearizes the result in this region and results are wrong.
If I put in a current limiting resistor, it will vary the DC bias point of X'tor..
can someone suggest any alternative setup/workaround.. :roll:
Any help will be appreciated.
Thanks!
Regards,
@ir@ce
I am trying to measure Idrive process spread for PMOS/NMOS (TSMC 0.18um). The test setup i have used is below :-
The NMOS size i used is actually 50/0.18..and simulation is with specter with conditions being Vgs =1.8 and Idrive to be measured at Vds = 1.8 v
Problem : Id is reaching Imax/Imelt of source - bulk region before Vds = 1.8v and specter linearizes the result in this region and results are wrong.
If I put in a current limiting resistor, it will vary the DC bias point of X'tor..
can someone suggest any alternative setup/workaround.. :roll:
Any help will be appreciated.
Thanks!
Regards,
@ir@ce