In the amplifier circuit shown in Fig. Q5, the MOSFETS, M and M, are identical with...
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In the amplifier circuit shown in Fig. Q5, the MOSFETS, M₁ and M₂, are identical with a Threshold voltage magnitude of 1.2 V, a Conductance Parameter of 2 mA/V² and they do not experience Channel Length Modulation effect. RREF Vs VDD = 8 V R₁ = 15 KQ ww WWTH Rs = 1 KQ Vin Rin VDD=8 V RB = 5 KQ Vout Rout Kn = 2mA/V^2 Vth = 1.2 V Fig. Q5 Hint: in saturation region: Vgs > Vth The MOSFET M₁ is in saturation operation and its drain current, ID,M1 = 1.2 mA. (d) What is the configuration of the amplifier circuit? RL = 6 KkQ (a) Show that the DC drain current of MOSFET M2, ID,M2 = ID,M1 with reasoning. Formula: ID = ID(sat) = Kn (Vgs - Vth)^2 (b) Determine the value of RREF. (c) Which MOSFET, M₁ or M2, performs the amplification function? Why? (f) Determine the gain (Vout/vs) of the amplifier. (e) Determine the values of the 2-port network equivalent parameters of the amplifier: Gm (or Av), Rin and Rout. (g) If RA is zero, discuss the effects on the operation of the amplifier circuit. All the other resistors in the amplifier circuit are not changed. In the amplifier circuit shown in Fig. Q5, the MOSFETS, M₁ and M₂, are identical with a Threshold voltage magnitude of 1.2 V, a Conductance Parameter of 2 mA/V² and they do not experience Channel Length Modulation effect. RREF Vs VDD = 8 V R₁ = 15 KQ ww WWTH Rs = 1 KQ Vin Rin VDD=8 V RB = 5 KQ Vout Rout Kn = 2mA/V^2 Vth = 1.2 V Fig. Q5 Hint: in saturation region: Vgs > Vth The MOSFET M₁ is in saturation operation and its drain current, ID,M1 = 1.2 mA. (d) What is the configuration of the amplifier circuit? RL = 6 KkQ (a) Show that the DC drain current of MOSFET M2, ID,M2 = ID,M1 with reasoning. Formula: ID = ID(sat) = Kn (Vgs - Vth)^2 (b) Determine the value of RREF. (c) Which MOSFET, M₁ or M2, performs the amplification function? Why? (f) Determine the gain (Vout/vs) of the amplifier. (e) Determine the values of the 2-port network equivalent parameters of the amplifier: Gm (or Av), Rin and Rout. (g) If RA is zero, discuss the effects on the operation of the amplifier circuit. All the other resistors in the amplifier circuit are not changed.
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Related Book For
Analysis and Design of Analog Integrated Circuits
ISBN: 978-0470245996
5th edition
Authors: Paul R. Gray, ? Paul J. Hurst Stephen H. Lewis, ? Robert G. Meyer
Posted Date:
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