circuitking
Full Member level 5
Hi, I know that Device resistance = (Resistor Length(L)/Resistor width(W))*Sheet resistance.
If a resistor from a particular technology has sheet resistance 1 Kohm and if I choose L/W as 1, it should give me 1 kOhm resistor. But that is not happening, when I change W, L is also changing accordingly and vice versa and not providing me with 1 Kohm resistor. In my case, as in the figure, If I choose W=1um and L=3um then it should give me the device resistance should be 990 ohm. Unfortunately that is not what I get because W and L are chanigng automatically.
Could anyone tell me how the parameters in the attached figure behave, their interrelation and limitations? Thanks
If a resistor from a particular technology has sheet resistance 1 Kohm and if I choose L/W as 1, it should give me 1 kOhm resistor. But that is not happening, when I change W, L is also changing accordingly and vice versa and not providing me with 1 Kohm resistor. In my case, as in the figure, If I choose W=1um and L=3um then it should give me the device resistance should be 990 ohm. Unfortunately that is not what I get because W and L are chanigng automatically.
Could anyone tell me how the parameters in the attached figure behave, their interrelation and limitations? Thanks