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hi all:
for exaplem: a differential to single output amplifer's random offset voltage is
vos=Δvth1-2+(gm3/gm1)Δvth3-4.
in my opinion,bec the input pair and the load pair are difference type mos,so the drift come from the (gm3/gm1).but from sansen' book said the Δvth's drift usually...
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