18 如圖為共源級放大器(common source amplifier)電路,其飽和區之電流方程式為IDp = KP(VSGP – |VTP|)2, 電晶體參數為:KP = 1 mA/V2,VTP = -2 V,且λ= 0。若電路參數RD = 1 kΩ,RL = ∞ 且VSDQ = 5 V,則 此放大器之小信號電壓增益為:
(A)-2
(B)-4
(C)-6
(D)-8
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統計: A(6), B(14), C(11), D(8), E(0) #1197187
統計: A(6), B(14), C(11), D(8), E(0) #1197187