As Jake mentioned, there is no difference between the source and drain when you lay out the circuit other than what is attached to the well. Are you assigning the names to the pins so that they match what you want on the fets that are mirrored?
It may be that the fet you are using as a starting point has these named and when you mirror them they are backwards. If you want the source and drain named correctly I would say create one that has them prenamed and the spice model attached and then when you rotate/mirror them make sure that the S/D is in the correct position. If it helps add the arrows to the device you create to keep track of what is what. Then you can quickly create a schematic of your circuit. I found this to be useful as I am used to seeing the arrows on discrete components. It took a while to realize that in Electric there is no difference and to not need the arrows or source/drain labels. Ed -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Augusto Sent: Wednesday, March 24, 2010 5:26 PM To: Electric VLSI Editor Subject: Re: Problem with drain/source position Hi Jake, i'm doing a differential pair ( with w=300), so i'm using a parallel configuration to emulate a transistor with that width and the cross- over tecnhique. I need that all of the transistor might be in parallel (same drain node and same source node). The problem is that i'm laying out a polarization circuit too, so i spend a lot of time changing the positions manually! Regards. -- You received this message because you are subscribed to the Google Groups "Electric VLSI Editor" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/electricvlsi?hl=en. -- You received this message because you are subscribed to the Google Groups "Electric VLSI Editor" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/electricvlsi?hl=en.
