For the differential amplifier shown in Figure 6: Assume well-matched transistors and = 100 for all transistors:
a) Why it is important to use well-matched transistors in differential amplifier circuits? What is the potential influence of mismatched transistors on the performance of the differential amplifier?
b) Determine the resistor values (R1, R2 and R3) such that the emitter coupled current IE = 0.5 mA and VC1 = 3 V.
c) Draw the ac equivalent circuit for the single ended differential amplifier (you may represent the current mirror by its current source equivalent with ro = 150 kΩ).
d) Derive an expression for the circuit differential voltage gain.
e) Calculate the value of the differential voltage gain of the circuit.
f) Calculate the differential input resistance.
g) Find the common mode gain assuming that the current mirror circuit has ro = 150 kΩ.
h) Calculate the common mode rejection ratio in dB.
Homework Answers
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For the differential amplifier shown in Figure 6: Assume well-matched transistors and = 100 for all transistors: a) Wh...
For the differential amplifier shown in Figure (2),
For the differential amplifier shown in Figure (2),assume \(\mathrm{VCC}=12 \mathrm{~V}, \mathrm{VEE}=-12 \mathrm{~V}, \mathrm{Rc}=2 \mathrm{k} \Omega\), and \(\beta=100\) for all transistors.For the current source circuit (Transistor \(\left.Q_{3}\right): R_{1}=4 k \Omega, R_{2}=4 k \Omega, R_{3}=3 \mathrm{k} \Omega\), and \(r_{0}=100 \mathrm{k} \Omega\).a) In differential amplifier circuits, what do "well-matched transistors" mean?b) Why it is important to use well-matched transistors in differential amplifier circuits?c) What are the operating \(Q\) point values \(\left(I_{c Q}\right.\) and \(\left.V_{C Q}\right)\) for the transistors \(Q_{1}\) and \(Q_{2}\) ?d) Draw...
4) Consider the MOSFET differential amplifier shown below, with Io-2 mA, and RL- 10 kS2, Rss-100 ...
4) Consider the MOSFET differential amplifier shown below, with Io-2 mA, and RL- 10 kS2, Rss-100 k2, VDD- +8V and Vss--8V. The NMOS transistors in the circuit are nominally identical, with kn 2 mA/V2, VTn 1.0 V and ro 100 k2. The PMoS transistors in the circuit are nominally identical, with kp 2 mA/V2, [VTpl 1.0 V and ro 100 kΩ M3 M4 0 M1 M2 a) First consider the DC bias point. Assuming that the current mirror requires at...
For the simple differential amplifier shown below, a) Calculate the differential gain, Av , of th...
For the simple differential amplifier shown below,
a) Calculate the differential gain, Av , of the circuit
b) Calculate the common-mode gain, ACM, of the
circuit and compute CMRR
c) The common-mode gain can be reduced by replacing the resistor
RE, with a constant current source. Design a current
source that is not dependent on Beta linearly to
replace RE, transistors of the same characteristics as
Q1 and Q2, and resistors of your choice
*(Q1, Q2 = 120; ro =...
pleaseee solve quickly it s urgent!!!!! EEN 311-Electronic Circuits ll (3 eredíįs)-Final Exam fferential amplifier biased with a basic current source rollowing parameters: Voo-Va 12 V. RD 8 ka, a...
pleaseee solve quickly it s urgent!!!!!
EEN 311-Electronic Circuits ll (3 eredíįs)-Final Exam fferential amplifier biased with a basic current source rollowing parameters: Voo-Va 12 V. RD 8 ka, and 5. (20 points) Consider the di The circuit has the param Vi - 650 mv, Vov 50 mV, and R 10 k2. The transistors are matched and have: Va=80 V 几 Von Ro &K 오, DGI + VDD REF Q4 THE DE CEER Vss Determine: a) the reference current IREF...
explain the process Lab Preparation 1. Using DC analysis, and assuming that the transistors (QREF and...
explain the process
Lab Preparation 1. Using DC analysis, and assuming that the transistors (QREF and Q are in the active mode, determine the value of RREF required for generating a copy current of 0.755 mA. Take the value of Vcc to be 8 V, and the value of V in the active mode to be equal to 0.7V Qi REF RREF Vout In Figure 3 Single-stage amplifier biased by a simple current mirror device 2. The circuit shown in...
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β...
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β-100, Find the de emitter currents and the de collector voltage of all transistors. The de voltage at the inputs is OV and the de output voltage is held at 0V (by negative feedback, not shown). Neglect the de base currents for this part. Find the (differential) voltage gain of the amplifier with R-10 k2. Assume the impedance of the capacitor is very large....
Problem 1: All the transistors in the circuit have β-110, VA-00 Assuming that approximately IC3-220μΑ and IC4-1.9mA, A] Evaluate Rout of the current source and the figure of merit of the current sour...
Problem 1: All the transistors in the circuit have β-110, VA-00 Assuming that approximately IC3-220μΑ and IC4-1.9mA, A] Evaluate Rout of the current source and the figure of merit of the current source C] Find the gains of the differential pair (single-ended output), the common-emitter stage, and the overall gain , the common-emitter stage, +15V RC1 RC2 Q4 Q1 Q2 VO V2 RC4 R1 Q3 R2 R3 -15V
Problem 1: All the transistors in the circuit have β-110, VA-00 Assuming...
This direct coupled emitter follower amplifier using a reference current mirror to produce a blasttent for...
This direct coupled emitter follower amplifier using a reference current mirror to produce a blasttent for the di transistor The parameters for the circuit are as follows: . Vcc = -Ves = 5V • All transistors. Qı, Q2, Qs, are matched with the following parameters + 8 = 100 , Is = 10- A (Hints: You must solve for for all transistors. You may need to lerate once or twice to solve the recent with the foresistor in the Qiraulties...
Small-Signal Mid- Band Voltage Gain (Range) Transistors Amplifier Confiaurations +2) to (+5 P-JFET Common Gate By referring to a specific transistor datasheet, design a single stage amplifier circuit...
Small-Signal Mid- Band Voltage Gain (Range) Transistors Amplifier Confiaurations +2) to (+5 P-JFET Common Gate By referring to a specific transistor datasheet, design a single stage amplifier circuit with the following specifications. Include in your design, (i) the amplifier circuit, (ii) DC & AC equivalent circuits, (ii) DC & AC analysis and (iv) frequency response. State your assumptions, if any.
Small-Signal Mid- Band Voltage Gain (Range) Transistors Amplifier Confiaurations +2) to (+5 P-JFET Common Gate By referring to a specific...
1 (70 points) In the following multi-stage amplifier input and output of the amplifier as well as...
1 (70 points) In the following multi-stage amplifier input and output of the amplifier as well as the feedback resistance (RF) were AC coupled to nodes through the coupling capacitances (Ce-100uF). W/L)2 55/0.25u VAA R2 M1 Xin R, VI M2 Ri Ro a. (20 points) Calculate the bias currents of IpS,MI, IDS M2, IR2 and the total DC power consumption of the circuit assuming Ro Determine the operation regions of the transistors. (20 points) Find the type and polarity of...
4) Consider the MOSFET differential amplifier shown below, with Io-2 mA, and RL- 10 kS2, Rss-100 k2, VDD- +8V and Vss--8V. The NMOS transistors in the circuit are nominally identical, with kn 2 mA/V2, VTn 1.0 V and ro 100 k2. The PMoS transistors in the circuit are nominally identical, with kp 2 mA/V2, [VTpl 1.0 V and ro 100 kΩ M3 M4 0 M1 M2 a) First consider the DC bias point. Assuming that the current mirror requires at...
For the simple differential amplifier shown below,
a) Calculate the differential gain, Av , of the circuit
b) Calculate the common-mode gain, ACM, of the
circuit and compute CMRR
c) The common-mode gain can be reduced by replacing the resistor
RE, with a constant current source. Design a current
source that is not dependent on Beta linearly to
replace RE, transistors of the same characteristics as
Q1 and Q2, and resistors of your choice
*(Q1, Q2 = 120; ro =...
pleaseee solve quickly it s urgent!!!!!
EEN 311-Electronic Circuits ll (3 eredíįs)-Final Exam fferential amplifier biased with a basic current source rollowing parameters: Voo-Va 12 V. RD 8 ka, and 5. (20 points) Consider the di The circuit has the param Vi - 650 mv, Vov 50 mV, and R 10 k2. The transistors are matched and have: Va=80 V 几 Von Ro &K 오, DGI + VDD REF Q4 THE DE CEER Vss Determine: a) the reference current IREF...
explain the process
Lab Preparation 1. Using DC analysis, and assuming that the transistors (QREF and Q are in the active mode, determine the value of RREF required for generating a copy current of 0.755 mA. Take the value of Vcc to be 8 V, and the value of V in the active mode to be equal to 0.7V Qi REF RREF Vout In Figure 3 Single-stage amplifier biased by a simple current mirror device 2. The circuit shown in...
0.7V, and Va 100V. Find: -For the operational amplifier of Figure 4 assume all transistors have β-100, Find the de emitter currents and the de collector voltage of all transistors. The de voltage at the inputs is OV and the de output voltage is held at 0V (by negative feedback, not shown). Neglect the de base currents for this part. Find the (differential) voltage gain of the amplifier with R-10 k2. Assume the impedance of the capacitor is very large....
Problem 1: All the transistors in the circuit have β-110, VA-00 Assuming that approximately IC3-220μΑ and IC4-1.9mA, A] Evaluate Rout of the current source and the figure of merit of the current source C] Find the gains of the differential pair (single-ended output), the common-emitter stage, and the overall gain , the common-emitter stage, +15V RC1 RC2 Q4 Q1 Q2 VO V2 RC4 R1 Q3 R2 R3 -15V
Problem 1: All the transistors in the circuit have β-110, VA-00 Assuming...
This direct coupled emitter follower amplifier using a reference current mirror to produce a blasttent for the di transistor The parameters for the circuit are as follows: . Vcc = -Ves = 5V • All transistors. Qı, Q2, Qs, are matched with the following parameters + 8 = 100 , Is = 10- A (Hints: You must solve for for all transistors. You may need to lerate once or twice to solve the recent with the foresistor in the Qiraulties...
Small-Signal Mid- Band Voltage Gain (Range) Transistors Amplifier Confiaurations +2) to (+5 P-JFET Common Gate By referring to a specific transistor datasheet, design a single stage amplifier circuit with the following specifications. Include in your design, (i) the amplifier circuit, (ii) DC & AC equivalent circuits, (ii) DC & AC analysis and (iv) frequency response. State your assumptions, if any.
Small-Signal Mid- Band Voltage Gain (Range) Transistors Amplifier Confiaurations +2) to (+5 P-JFET Common Gate By referring to a specific...
1 (70 points) In the following multi-stage amplifier input and output of the amplifier as well as the feedback resistance (RF) were AC coupled to nodes through the coupling capacitances (Ce-100uF). W/L)2 55/0.25u VAA R2 M1 Xin R, VI M2 Ri Ro a. (20 points) Calculate the bias currents of IpS,MI, IDS M2, IR2 and the total DC power consumption of the circuit assuming Ro Determine the operation regions of the transistors. (20 points) Find the type and polarity of...
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