The multistage amplifier circuit of Figure Q.2(b) have the following parameters: Q 1 and Q 2 :
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Question:
The multistage amplifier circuit of Figure Q.2(b) have the following parameters:
Q1 and Q2 : β = 200, VBE = 0.7 V, VT = 26 mV , VA = ∞
Given that ICQ1 = 2 mA and VCEQ1 = 2 V.
(i) Determine the value for RB4. List the assumption/approximation made in the analysis.
(ii) Sketch and label the small-signal hybrid-π equivalent circuit at midband frequency range.
(iii) Calculate the small signal hybrid-π model parameters: gm and rπ for Q1 and Q2. Then, determine Zi2 and Zo.
Related Book For
Electronic Devices and Circuit Theory
ISBN: 978-0135026496
10th edition
Authors: Robert L. Boylestad, Louis Nashelsky
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