Operating Point of Transistor

[soc]

operating point of a transistor

Hello All...
I want to know how do I calculate if the following transistor is in Triode or saturation region: I have the following readings from a schematic in cadence.

gm=15.21n
Ids= 2.45n
gds= 114.12u
Vtheff= 564.5m
Vdsat = 140.13m

Thanks

 

[DenisMark]

off triode sat subth breakdown

Use "Results/Print/DC Operating Point" in Analog Artist (perform dc simulation with "Save DC operation point" checked). Look for "region". Possible values are 0-off, 1-triode, 2-sat, 3-subth, or 4-breakdown.

 

[pkalavakuru]

finding transistor dc operating point

He is right and if (VDS <= VDsat ), where (vds=vgs-vth), the transistor is in saturation region or u can use calculater to find out the Operating point..

Have fun

Ciao

 

[Gundam001]

how to find the operating point of a transistor

can you post your schematic so that we can review..

 

[soc]

operating point of transistor

can you post your schematic so that we can review..

The schematic is very big, I just wanted to know how to find the operating condition from the valuse I gave in my first post...Is it possible only with those values

 

[gte582w]

find operation point transistor

try gm/ID, for BJT, it's about 40, for CMOS, maximum is about 40/2, which
is 20 when it operates in sub-vt region. Here it's about 7, so probably, not
in that region. Given your vdsat of that much, I would guess it's in sat.
The reason I see not linear is it's relatively large gm for that given ID level.