612FET电流源 2. MOSFET多路电流源 +VDp REF K n0 gS W/L NMOS To W/L.REF GSO W/L NMOS TL T T T4 REF VGsL VGs GS4 W/L REF HO配E6.1.2 FET电流源 2. MOSFET多路电流源 REF 1 1 2 2 D2 / / I W L W L I = REF 1 1 3 3 D3 / / I W L W L I = REF 1 1 4 4 D4 / / I W L W L I = 2 n0 GS0 T0 REF D0 K (V V ) I I = − =