blueboy
Newbie level 1
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 a few mv/C. my question is :why Δvth have temperature drift? if it have, how to caculate Δvth' temperature drift with foundry's spice model
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 a few mv/C. my question is :why Δvth have temperature drift? if it have, how to caculate Δvth' temperature drift with foundry's spice model