poly width Vs current density

[test_123]

width vs current

I know the metal current density is about 1mA/um, then how about ploy current density, and how about high resistance poly current desity.

 

[layoutmaster]

poly width

It's highly dependent on your process.

For instance, we work with processes where (depending on the metal) our metal current densities are 2 to 15 times the density you mentioned...

In order to avoid problems, I recommend you to get the data directly from the foundry owner of your process, and not something generic.

 

[engrak]

u can see the in TIPS document of ur process , the resistivty of HR poly is in kilo-ohms , so its current capacity is very less.

 

[hbk2222]

check the documentation of the used design kit

 

[jecyhale]

I know the metal current density is about 1mA/um, then how about ploy current density, and how about high resistance poly current desity.

I have met this question too.

I guess the poly current desity as 0.5mA/um

So far it is ok based on the test result.

 

[test_123]

maybe 0.5mA/um for general poly is OK, but the high resistance poly should has much less current density. From the PDK doc in hand I can't find this value, then I want to know the approximate value of high poly resistance(2000 ohm unit). thanks!

 

[DenisMark]

1mA/um for low resistivite poly
20uA/um for high resisvite poly
I see this numbers are same for different process from diff. companies.

 

[ricklin]

Usually foundry will provide these data