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soi body contact

Discussion in 'Electronic Design' started by jason, Aug 31, 2005.

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  1. jason

    jason Guest

    Hello All

    I have been reading about soi body contact and back gate bias.
    However I am not sure if the soi nmos and pmos has the same body
    contact biasing or not(0V or Vdd). It seems like the body contact is
    connected to the source for nmos.

    Also I am not sure if the back gate voltage bias is at 0V for all
    devices in the chip.
    It is said the the back gate voltage for nmos is 0V while for pmos is
    -Vdd.

    Kindly share with me your views on how to interprete the reasons for
    such connections.

    Thank you


    best regards
    Jason
     
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