3. Consider the amplifier circuit shown in Fig. 3. The BJT has = 0.7 V, β = 200, Cμ = 0.8 pF, and fr= 600 MHz. The MOSFET has Vt= 1 V, k'WIL =2 mA/V2, and =1 pF.
申論題內容
(b) Consider the circuit at low frequencies. Please find the frequency of the poles due to C1 and C2, and hence estimate the lower 3-dB frequency, fL (10%).
阿摩線上測驗
登入
= 0.7 V, β = 200, Cμ = 0.8 pF, and fr= 600 MHz. The MOSFET has Vt= 1 V, k'WIL =2 mA/V2, and 
=1 pF.