Problem-1(Ch-4: FET Amplifier)A common-source amplifier circuit has following parameters: Kn=0.5 mA/V², VDD = 5 V,RD = 10 k2, R₁ = 160 k2, R2 = 40 kQ, Rsi = 5 k, VTN = 0.5 V, and λ = 0.01 V-1.(a) Determine the Q-point of the MOSFET.(b) Draw the small signal model of the given amplifier.(c) Determine the input and output resistance of the given amplifier.(d) Determine the small signal gain of the given amplifier.ViRsiww5=wwwwwVDDR₁R2wwRDvo

Answered: Problem-1 (Ch-4: FET Amplifier) A…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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Design a common-emitter amplifier to provide a small-signal voltage gain of approximately -10. 1. Consider the circuit shown in Figure 1. Show the following calculations in your notebook: Calculate a value for Rc so that A, z –10 Calculate values for R1 and R2 so that the circuit is bias stable and near the center of the load line. (Note: Use the datasheet for the 2N5209 transistor to make your calculations more accurate). Vcc = 10 V R1 Rc Cc2 Cci RL Vs R, REj = 499 Q Figure 1: Common-emitter amplifier for part #1
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Using the small signal equivalent model, find the voltage gain Vo/vi of such E-MOSFET circuit. Neglect impedance due to capacitors by assuming these to be short circuit on AC analysis. Kn =4 mA/V2, and VTh = 2V
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Q1. The output characteristic of a typical transistor is shown below, where the quiescent point is selected on it. This transistor is used in the bias circuit presented below. Find the suitable values of Rg and Rc to fix the Q-point of the circuit properly. +Vcc = 12 V 12- Is = 70 uA 10- Ig = 60 uA 8- Rc Is = 50 uA Rs 6- Ig= 40 uA 4. Is = 30 uĄ Is = 20 uA B = 100 2- VBE = 0.7 V 0- -2- 2 4 6 8 10 12 14 16 VCE (V) Ic (mA)
I. If a sinusoidal signal voltage of 6V ( pp ) is applied to each amplifier in the figure below , what are their output voltages ( draw ) and what is their phase relationship with respect to the inputs ?
4. A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed, (a) The circuit will become un stable (c) The voltage gain will increase (b) the voltage gain will decrease (d) the Q-point will shift 5. For a common-collector amplifier, RE =1002, r'e= 10 2, and Bac=150. The ac input resistance at the base is: (a) 1500 2 (b) 15 k2 (c) 110 Q (d) 16.5 k2 6. If a 10 mV signal is applied to the base of the emitter-follower circuit in Question 5, the output signal is approximately (a) 100 mV (b) 150 mV (c) 1.5 V (d) 10 mV
Q1. For the MOSFET circuit below, input is sinusoidal signal of amplitude IV and frequency 50Hz. Find, the DC operating point, Plot the frequency response and Plot the input, output and transfer characteristics and find out the small signal equivalent. Assume an overdrive voltage of 0.2V Use MOSFET 500nm Library file provided. F Vdd=5V -=80 K R1 (1 1.20F
Figure Q3 shows a common-source amplifier that has transistor parameters Kn’=40μA/V2, W/L=40, VTN=0.4V, and λ=0.02V-1. State all assumptions made. i. Determine IDQ and VDSQii. Sketch the small signal analysis and determine the small signal voltage gain, Av.
Q1. In your own words, explain the pinch-off region of a MOSFET and Sketch related graph[ a. b. In your own words, explain how MOSFET works as an amplifier?
Consider the amplifier shown. Assume that the transistor has the following small signal parameters: A gm : = 4 x 10-³ V² ro= 10 x 10³ a) Draw the small signal model. Assume that the frequency is high and model the capacitors as short circuits. b) Using the above small signal model, perform small signal analysis and determine a numerical value for Av. Show your work! Do not make approximations. c) Using the above small signal model, perform small signal analysis and determine a numerical value for Ri. Show your work! Do not make approximations. Vin 5V W 30K 20K 5V W WWW 2K 500 5V WH 5K C1 C2 Vo

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