北大微电子:模拟集成电路原理 共源 MOSFET M out V:=0 out ∵Vin=0时,Imn Rout=ro out o9n 单管增益北大微电子：模拟集成电路原理 共源MOSFET V = V = V V out out gs in I V R V V V in = = = = | 0 1 out in out out V V I I in Q = 0时， = out o o i out R r r ∴ = 单管增益 m o out g r V = − 单管增益 m o in g V