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Recent content by petros85

  1. P

    Nmos substrate connection

    Yes that's a solution..I was trying to avoid it since I have already made a floorplan that will have to change now. It seems too weird if you think about it it means that every device MUST have at least one dimension smaller than 20um. I thought that the 20um rule is from the edge of the...
  2. P

    Nmos substrate connection

    Hi all. I have runt into a DRC error : MAXIMUM n+ DIFFUSION TO NEAREST p+ PICKUP SPACING(INSIDE P-WELL OR TWELL) IS 20um I know this is resolved by adding taps or a guard ring around the device. Problem is that I get this error for one device that is quite big. So no matter how close I place...
  3. P

    umc18 transistors and documentation

    Hello all. I am just new but I think i will be posting a lot during my dissertation. I am using umc18 for the first time and my main issue is that i don't know which transistors to use. I mean what is the difference between the basic N_18 /P_18 and the RF ones.Also which fets are the low-Vt? I...

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