2) SIM D *8.29 The differential amplifier in Fig. P8.29 uti- lizes a resistor R to establish a 1-mA dc bias current. Note that this amplifier uses a single 5-V supply and thus the dc common-mode voltage VCM cannot be zero. Transistors Q and Q₂ have KW/L=2.5 mA/V², V₁=0.7 V, and λ = 0. (a) Find the required value of VCM- (b) Find the value of R, that results in a differential gain A, of 8 V/V. (c) Determine the dc voltage at the drains. (d) Determine the common-mode gain AVD/AVCM. (Hint: You need to take 1/g into account.) (e) Use the common-mode gain found in (d) to determine the change in VCM that results in Q, and Q₂ entering the tri- ode region. Vid VCM Figure P8.29 RD VDD=5 V 2₁ Vod + RD 1 mARss=1kn

2) SIM D *8.29 The differential amplifier in Fig. P8.29 uti- lizes a resistor R to establish a 1-mA dc bias current. Note that this amplifier uses a single 5-V supply and thus the dc common-mode voltage VCM cannot be zero. Transistors Q and Q₂ have KW/L=2.5 mA/V², V₁=0.7 V, and λ = 0. (a) Find the required value of VCM- (b) Find the value of R, that results in a differential gain A, of 8 V/V. (c) Determine the dc voltage at the drains. (d) Determine the common-mode gain AVD/AVCM. (Hint: You need to take 1/g into account.) (e) Use the common-mode gain found in (d) to determine the change in VCM that results in Q, and Q₂ entering the tri- ode region. Vid VCM Figure P8.29 RD VDD=5 V 2₁ Vod + RD 1 mARss=1kn

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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amplifier shown in Fig. P8.21 and use it to derive an expres- sion for the differential gain A= vod/vid in terms of gm, Rp, and R.. Neglect the Early effect. What is the gain with Rs 8.21 Find the differential half-circuit for the differential = 7) = 0? What is the value of R, (in terms of 1/gm) that reduces the gain to half this value? VDD Rp RD o Vod Vid Vjd Q2 2 I - Vss SS Figure P8.21
8.16 The parameters of the transistor in Fig. P8.16 are BF = 150, VBE = 0.7 V, and VCE(sat) = 0.3 V. If Vcc = 12 V, VEE = 12 V, and Rc = 1.5 kN, determine (a) the base current Ig, (b) the collector current Ic, and (c) the C-E voltage VCE- FIGURE P8.16 T +Vcc Rc RE VEE
An AC voltmeter with reading is specified for an equivalent input noise voltage of 2 mv. This instrument is used for noise measurement and gives a Vnt310 mV reading. What is the noise voltage of the source (in mV), assuming matched noise bandwidth.
2 Figure P8.42 shows a simple current-to-voltage converter. Show that the voltage Vout is proportional to the current generated by the cadmium sulfide (CdS) solar cell. Also show that the transimpedance of the circuit Vont/I, is –R. 1, 7CdS cell 6-Va
8.10 Differential amplifiers are often used in conjunction with Wheatstone bridge circuits. Consider the bridge shown in Figure P8.10, where each resistor is a temperature sensing element, and its change in resistance is directly proportion to a change in temperature that is, AR= a(+AT), where the sign is determined by the positive or negative temperature coefficient of the resistive element. a. Find the Thévenin equivalent that the amplifier sees at point a and at point b. Assume that JAR? « Ro. b. If JAR| = KAT, with Ka numerical constant, find an expression for vout (AT), that is, for Vout as a function of the change in temperature. 100 k2 Ro-|AR , R, -|AR| 10 V Ro-|AR| R =1 k2 100 k2
Select appropriate components using standard5 percent resistor values to obtain a gain of magnitudeapproximately equal to 1,000 in the circuit of FigureP8.44. Compute the error in the gain, assuming that the5 percent tolerance resistors have the nominal value. Use the ±5 percent tolerance range to compute the possible range of gains for this amplifier
An op-amp has the open-loop frequency responseshown in Figure 8.37 in the text. What is theapproximate bandwidth of a circuit that uses theop-amp with a closed-loop gain of 75? What is thebandwidth if the gain is 350?
QUESTION 1 a) As an electronics engineer, you are given a task to design power amplifier using the Bipolar Junction Transistor (BJT). You are required to get the efficiency of the power amplifier up to 78.5%. Suggest the selected power amplifier's class and sketch the circuit. Discuss one problem that commonly arise with the selected power amplifier and propose the method to improve it. b) One of the commonly used model in small signal ac analysis of transistor network is re model. Explain the steps to obtain the ac equivalent network by sketching the appropriate circuit diagram.
I am having trouble with a Differential Amplifier problem that I attached a photo of. I must "Design a single-input, single-output BJT amplifier with a gain of -150. (Based on figure 8.4). Choose values for V sub CC, V sub EE, I sub C and R sub C. Also suggest a simple modification to the circuit that will yield a positive +150 gain." Please provide clear explanation of the logic behind the steps of your solution so I can have a comprehensive understanding.
Q.1) Is the relationship between the change in VGS and the resulting change in ID linear or nonlinear? Explain. How the electrons flow in Enhancement type MOSFET with reference to thechannel formation? Sketch the diagram to elaborate the process. Q.2) How to convert square signal in to triangular signal and sinusoidal signal in to cosine signal withthe help of Operational Amplifier? Design the Op-amp circuits for it. Defend your design withthe help of output waveforms.
8.21 Differential amplifiers are often used in conjunction with the Wheatstone bridge. Consider the bridge shown in Figure P8.21, where each resistor is a temperature-sensing element and the change in resistance is directly proportional to a change in temperature that is, AR = a (+AT), where the sign is determined by the positive or negative temperature coefficient of the resistive element. a. Find the Thévenin equivalent that the amplifier sees at point a and point b. Assume that |AR? « R. b. If JAR| = KAT, with K a numerical constant, find an expression for vout (AT), that is vaut as a function of change in temperature. 100 ka R- JAR Rot JAR| ww 10 V R+|A| Vout 100 ka R =1 ka