Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
7th Edition
ISBN: 9780199339136
Author: Adel S. Sedra, Kenneth C. Smith
Publisher: Oxford University Press
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Chapter 5, Problem 5.27P
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The missing table entries.
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For a constant value of VGS, the JFET acts as a linear resistivity device (in the ohmic region) until the depletion region of the reverse- biased gate-source junction extends the width of the channel (a condition called ......... ). Your answer
Q1) Answer True or False for the following:
1- Field-effect transistors are Bipolar devices.
2- A depletion MOSFET (D-MOSFET) can operate with a zero, positive, or negative gate-to
source voltage.
3- The 4-layer diode is a thyristor that conducts when the voltage across its terminals
exceeds the breakover potential.
4- The benefit of SCR Crowbar is power amplification.
5- Most op-amps require only a positive dc supply voltage.
The drain of an MOSFET is shorted to the gate.Threshold voltage=1 v .If the drain curent is 1mA for Vgs=2v ,what will be the drain curent value if Vgs is increased by 1v
Chapter 5 Solutions
Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
Ch. 5.1 - Prob. 5.1ECh. 5.1 - Prob. 5.2ECh. 5.1 - Prob. D5.3ECh. 5.2 - Prob. 5.4ECh. 5.2 - Prob. 5.5ECh. 5.2 - Prob. 5.6ECh. 5.2 - Prob. 5.7ECh. 5.3 - Prob. D5.8ECh. 5.3 - Prob. D5.9ECh. 5.3 - Prob. D5.10E
Ch. 5.3 - Prob. 5.11ECh. 5.3 - Prob. 5.12ECh. 5.3 - Prob. D5.13ECh. 5.3 - Prob. D5.14ECh. 5.3 - Prob. 5.15ECh. 5.4 - Prob. 5.16ECh. 5.4 - Prob. 5.17ECh. 5 - Prob. 5.1PCh. 5 - Prob. 5.2PCh. 5 - Prob. 5.3PCh. 5 - Prob. 5.4PCh. 5 - Prob. D5.5PCh. 5 - Prob. 5.6PCh. 5 - Prob. D5.7PCh. 5 - Prob. 5.8PCh. 5 - Prob. 5.9PCh. 5 - Prob. 5.10PCh. 5 - Prob. 5.11PCh. 5 - Prob. 5.12PCh. 5 - Prob. 5.13PCh. 5 - Prob. 5.14PCh. 5 - Prob. 5.15PCh. 5 - Prob. 5.16PCh. 5 - Prob. 5.17PCh. 5 - Prob. 5.18PCh. 5 - Prob. 5.19PCh. 5 - Prob. D5.20PCh. 5 - Prob. 5.21PCh. 5 - Prob. 5.22PCh. 5 - Prob. 5.23PCh. 5 - Prob. 5.24PCh. 5 - Prob. 5.25PCh. 5 - Prob. 5.26PCh. 5 - Prob. 5.27PCh. 5 - Prob. 5.28PCh. 5 - Prob. 5.29PCh. 5 - Prob. 5.30PCh. 5 - Prob. 5.31PCh. 5 - Prob. D5.32PCh. 5 - Prob. D5.33PCh. 5 - Prob. 5.34PCh. 5 - Prob. 5.35PCh. 5 - Prob. D5.36PCh. 5 - Prob. 5.37PCh. 5 - Prob. 5.38PCh. 5 - Prob. 5.39PCh. 5 - Prob. 5.40PCh. 5 - Prob. 5.41PCh. 5 - Prob. 5.42PCh. 5 - Prob. 5.43PCh. 5 - Prob. D5.44PCh. 5 - Prob. 5.45PCh. 5 - Prob. D5.46PCh. 5 - Prob. 5.47PCh. 5 - Prob. D5.48PCh. 5 - Prob. D5.49PCh. 5 - Prob. D5.50PCh. 5 - Prob. D5.51PCh. 5 - Prob. 5.52PCh. 5 - Prob. D5.53PCh. 5 - Prob. 5.54PCh. 5 - Prob. 5.55PCh. 5 - Prob. 5.56PCh. 5 - Prob. 5.57PCh. 5 - Prob. 5.58PCh. 5 - Prob. 5.59PCh. 5 - Prob. 5.60PCh. 5 - Prob. 5.61PCh. 5 - Prob. 5.62PCh. 5 - Prob. 5.63PCh. 5 - Prob. 5.64PCh. 5 - Prob. 5.65PCh. 5 - Prob. 5.66PCh. 5 - Prob. 5.67P
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- 4. A researcher claimed to obtain 1 mA, 1.5 mA and 2 mA currents at the gate, source and drain terminal of a MOSFET respectively for a particular gate voltage. Comment on the justification of his statement. You can add necessary diagram or equation in favor of your answer.arrow_forwardMost of the following statements about integrated circuits arecorrect, but one is not. Which statement is NOT true? Select one: a. Transistors are constructed in a small area of an integrated circuit,and are connected to other transistors by wires that are embedded inthe integrated circuit b. Wires that carry signals may be embedded in a substrate without a shortcircuit because a short circuit would require a signal to cross areverse biased junction c. Each transistor on an integrated circuit is manufactured individually,one at a time d. An integrated circuit contains several layersarrow_forwardAn NMOStransistor is to be used as a power switchto disable one core of a multicore processor chipthat operates from a 2.5 V power supply. When thecore is enabled, its current is 4 A. What is the W/Lratio of the NMOS transistor if the voltage dropacross the transistor must be less than 100 mV? IfL = 1µm, estimate the area of the transistor.arrow_forward
- In a N-Channel JFET if the voltage across the gate and source (VGs) is increased then explain in detail with neat diagram the changes in drain current. Justify your answer. ii) The reverse gate voltage of JFET when changes from 4.4 V to 4 V, the drain current [- changes from 2.2 mA to 3 mA. Calculate the value of transconductance of the transistor. e here to searcharrow_forward(b) List the steps needed to test any four-terminal MOSFET with the same setup to determine which terminal is the gate, which terminal is the body, whether the device is a N-cha (c) If the gate oxide were destroyed by a static electricity discharge, speculate on how the current readings might be different from those that were observed.Be detailed in your response.arrow_forwardThis question would help revise concepts related to MOS device and basic circuit design. Please mark all correct answers to the following multiple choice questions. 1.1. Which of the following are true about MOSFET devices? (a) MOS stands for "Metallurgy Of Semiconductors" (b) MOSFET current conduction is due to drift phenomenon (c) An externally induced voltage at the gate is fundamental to inversion layer (d) Naming of "Source" and "Drain" regions are only dependent on aspect ratio 1.2. Which of the following are true about NMOS transistors (a) The threshold voltage can be positive or negative depending on geometry (b) Channel length modulation parameter (A) is always positive (c) Current flows from drain to source (d) Threshold voltage is a fixed value based on process, it cannot be changed by external voltages 1.3. In a MOS device (a) Cas and CGp both have both geometry and voltage dependencies (b) Cas is takes minimum value at saturation while CGD goes to maximum value (c) CoB and…arrow_forward
- A. A voltage regulator circuit provides a constant voltage of (6 V) across a load resistance of (2 k2) using (12v) source voltage. Assume the maximum and the minimum current required for the Zener operation is (5 mA and 15 mA) respectively. 1. Design and draw the schematic diagram of the circuit. 2. What is the maximum values of the source voltage? 3. At maximum source voltage, what is the minimum load resistance to maintain the circuit operates normally?arrow_forwardIn a N-Channel JFET if the voltage across the drain and source (Vps) is increased then explain in detail with neat diagram the changes in drain current. Justify your answer. The reverse gate voltage of JFET when changes from 4.5 V to 4.3 V, the drain current changes from 1.4 mA to 2.4 mA. Calculate the value of transconductance of the transistor.arrow_forwardI-V Characteristics of NMOS device: The following graph shows the I-V characteristics of an NMOS device. Answer the following questions: [10] A. Find out the three regions of operation (linear, saturation, and cut-off) of the following graph and give a brief explanation of them by using the different operating modes (accumulation, depletion, and inversion). B. In the graph, the saturation voltages from drain-to-source increase with increasing gate-to-source voltages. Give a brief explanation of why: Vds(sat,A)<Vds(sat,B)<Vds(sat,C)arrow_forward
- An NMOS transistor has the following values: Vto = 1V, KP = 50 x10-6A/V2, L= 5 x10-6m, and W= 50 x10-6m. For each set of voltages, state with reasons the region of operation and compute the drain current. i. VGS = 4V and VDS = 10V ii. VGS=4V and VDS =2V iii. VGS =0V and VDS = 10Varrow_forwardField-effect transistors (FETs) exhibit ........... regions between the oppositely-doped gate and channel sections * Your answerarrow_forwardAn N-channel MOSFET with N+-poly gate is fabricated on a 15 n. cm P-type Si wafer (a) Determine the flat-band voltage Vfb. (b) What is the threshold voltage, Vt? (c) A circuit designer requested N-MOSFET with Vt = 0.5 V from a device engineer. It was not allowed to change the gate oxide thickness. If you are the device engineer, what can you do? Give specific answer.; including what type of equipment to use.arrow_forward
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How a MOSFET Works - with animation! | Intermediate Electronics; Author: CircuitBread;https://www.youtube.com/watch?v=Bfvyj88Hs_o;License: Standard Youtube License