A high speed voltage mode sensing is provided for a digital multibit
non-volatile memory integrated system. An embodiment has a local source
follower stage followed by a high speed common source stage. Another
embodiment has a local source follower stage followed by a high speed
source follower stage. Another embodiment has a common source stage
followed by a source follower. An auto zeroing scheme is used. A
capacitor sensing scheme is used. Multilevel parallel operation is
described.