In the circuit in Figure P7.66, the transistor parameters are: \(\beta=120\), \(V_{B E}(\mathrm{on})=0.7 \mathrm{~V}, V_{A}=\infty, C_{\mu}=3 \mathrm{pF}\), and \(f_{T}=250 \mathrm{MHz}\). Assume the emitter bypass capacitor \(C_{E}\) and the coupling capacitor \(C_{C 2}\) are very large.

(a) Determine the lower and upper \(3 \mathrm{~dB}\) frequencies. Use the simplified hybrid- \(\pi\) model for the transistor.

(b) Sketch the Bode plot of the voltage gain magnitude.

Transcribed Image Text:

Vcc +10 V Rc=5kQ R = 40 k Cc1=4.7 F CC2 ww Rs = 0.5 k R = 2.5 Vi R = 5 k ww RE= 0.5 =CE Figure P7.66