VE311 Electronic Circuits Homework 06 solved


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• Use SPICE to simulate the amplifier in Fig. 1 at a frequency of 1 kHz, and determine the differential-mode gain, common-mode gain, CMRR, and differential-mode
and common- mode input resistances. (b) Apply a 250-mV, 1-kHz sine wave as an
input signal and plot the output signals using SPICE transient analysis. Use the
SPICE distortion analysis capability to find the harmonic distortion in the output.
Figure 1: Schematic diagram of a quite interesting circuit
• What are the Q-points for the transistors in the amplifier in Fig. 2 if VCC = 18 V, VEE
=18V, REE =47kΩ,RC =100kΩ and βF = 100? (b) What are the differential- mode
gain, common-mode gain, CMRR, and differential-mode and common-mode input and
output resistances?
Figure 2: Differential Amplifiers
Reports will require to include a mathematical analysis and the numerical analysis o
simulation in Spice.