sharkies
Member level 5
I am using TSMC 90nm PDK and I'm wondering if I should enable guard ring option for my poly resistor for my 1.9GHz divider. I'm actually confused if this would help at all. does guard ring help matching? What's the purpose of having guard rings in resistor? I would understand if it's guard ring for transistors..... but putting around resistors seem odd.
The only reason I can think of is to use the accurate rppoly_rf model that is provided by TSMC and it believe that one is measured with guard rings going around. Am I right?
and unltimately, is it necessary to use guard ring around resistors in my divider? don't wanna fix my layout.. ugh.... tired
The only reason I can think of is to use the accurate rppoly_rf model that is provided by TSMC and it believe that one is measured with guard rings going around. Am I right?
and unltimately, is it necessary to use guard ring around resistors in my divider? don't wanna fix my layout.. ugh.... tired