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Multi-fingers in MOSFET in Series configuration in Cadence Virtuoso Schematic

Piash

I am trying to figure out to set multi-fingers (nf = 3) for MOSFET (both p-mos & n-mos). I know I can increase the length directly. As connecting MOSFET in series increases length, can I somehow configure the finger properties (nf > 1) of MOSFET in such a way that S/D of each finger connects as series? I am asking to do it in schematic, not in layout yet.

I am using Cadence Virtuoso and 22nm technology.

Parents
  • JJJin

    Open schematic, select the transistor, press Q , seek for number of gate fingers. Change it.

Reply
  • JJJin

    Open schematic, select the transistor, press Q , seek for number of gate fingers. Change it.

Children
  • Piash
    in reply to JJJin

    Thanks for reply. I know that. My question was when I change number of fingers (nf) then by default the connection is parallel isn't it? Can I do the connection series when I change the number of fingers (without manually putting the number of separate transistors)?

  • Andrew Beckett
    in reply to Piash

    This will depend on the capabilities of the PDK - so is more of a question for the foundry.

    Andrew

  • Piash
    in reply to Andrew Beckett

    Thanks. I realized it is not possible for the pdk that I have. It is more conventional in layout...Anyway thanks

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