lvn-vr2l≤ βn Is 21 (Uu--UTr 图6.111源对大信号差模传输待性 DI D2 g md I ssu, Co w /L=v2I nu, CoxW/L dvI C W L I C W L dv d i i g v S S n O X D n O X ID D D m d ID / 2 / ( ) 0 1 2 =  =  − = =