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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...
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....
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 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...
Problem 4: The following figure shows a biplolar op-amp circuit, the input differential pair Q,-Q, is...
Problem 4: The following figure shows a biplolar op-amp circuit, the input differential pair Q,-Q, is loaded in a current mirror formed by Q2-Q. The second stage is formed by the current-source-loaded common-emitter transistor Q. Unlike the CMOS circuit, here there is an output stage formed by the emitter follower Q. The function of capacitor Cc will be explained later in feedback chapter. All transistors have B=100, VBE = 0.7V, and r = 0. (a) For inputs grounded and output...
QUESTION 2: (20 MARKS) +5 V X2 71 QA X2 ×10 5 V Figure Q2.1 The...
QUESTION 2: (20 MARKS) +5 V X2 71 QA X2 ×10 5 V Figure Q2.1 The circuit shown in Figure Q2.1, is a multistage amplifier with a differential input stage It uses a folded cascode involving transistor Q3. Note that transistor Q5 operates in class B mode and is off at the quiescent point, while Q4 is ON at the quiescent point with QD sinking its bias current. All transistors have Vad-0.7V, VA-200 V, and β-100 a) Perform a dc...
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...
QUESTION4 Total 24 Marks] For the amplifier circuit shown in Figure 4, assume the input signal...
QUESTION4 Total 24 Marks] For the amplifier circuit shown in Figure 4, assume the input signal V has zero DC component. Assume both transistors have p-100. (a) State the type of feedback topology used in the amplifier circuit and which type of 12 marks] amplifier is shown in the figure. (b Determine the DC voltages at all nodes of transistors Q1 and Q2. and the DC currents 18 marks] at the emitters of transistors Q1 and Q2 (c) Use the...
Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows...
Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows a series regulator connected to the output of an unregulated power supply. The transistor has B =50, and a 6 volt Zener diode is used. When the load current, Il, is 1 amp the de input voltage from the unregulated supply, Vin, is 11 volt, VBE = 1 volt and the Zener diode current, Iz, is 20 mA. For these conditions, calculate Iz (i)...
Answer A & B & C as fast as u can 1. The amplifie parameters for...
Answer A & B & C as fast as u can
1. The amplifie parameters for each transistor and circuit components are given in the figure, 100 for both Q1 and Q2, and VeEVEe 0.7V. VA 200V for Q1, and VAo for r of the following figure consists of two CE amplifiers connected in cascade. The consider the β and capacitor is very large. (120 pts) RI V. Q2 -4V culate corresponding DC currents (U-) and DC voltages (V-Vs) through...
Problem 2 (10 points) In the amplifier shown in Fig. 2(a), assume Fig. 2(b) that I4 is ideal. Do not ignore the ro of t...
Problem 2 (10 points) In the amplifier shown in Fig. 2(a), assume Fig. 2(b) that I4 is ideal. Do not ignore the ro of the transistors for this problem, but you can assume that Ri is much smaller than any transistor o I1 and I2 ideal current sources. Also, assume in are (a) Find the small signal differential gain out/vdm of the Fig. 2(a) amplifier in terms of the appropriate small-signal parameters. Then express your answer in terms of appropriate...
PROBLEM 4 (20 pts) IMPORTANT: Assume all transistors are in saturation. a) Find the small-signal DC...
PROBLEM 4 (20 pts) IMPORTANT: Assume all transistors are in saturation. a) Find the small-signal DC gain of the amplifier circuit when the small-signal voltage ViN is applied to the gate of M1. Ignore the body effect for M1 and M2. b) Find the small-signal DC gain of the amplifier circuit when the small-signal voltage Vin is applied to the body of M1. In this case, a DC bias voltage (VB) is applied to the gate of M1. Ignore the...
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....
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...
Problem 4: The following figure shows a biplolar op-amp circuit, the input differential pair Q,-Q, is loaded in a current mirror formed by Q2-Q. The second stage is formed by the current-source-loaded common-emitter transistor Q. Unlike the CMOS circuit, here there is an output stage formed by the emitter follower Q. The function of capacitor Cc will be explained later in feedback chapter. All transistors have B=100, VBE = 0.7V, and r = 0. (a) For inputs grounded and output...
QUESTION 2: (20 MARKS) +5 V X2 71 QA X2 ×10 5 V Figure Q2.1 The circuit shown in Figure Q2.1, is a multistage amplifier with a differential input stage It uses a folded cascode involving transistor Q3. Note that transistor Q5 operates in class B mode and is off at the quiescent point, while Q4 is ON at the quiescent point with QD sinking its bias current. All transistors have Vad-0.7V, VA-200 V, and β-100 a) Perform a dc...
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...
QUESTION4 Total 24 Marks] For the amplifier circuit shown in Figure 4, assume the input signal V has zero DC component. Assume both transistors have p-100. (a) State the type of feedback topology used in the amplifier circuit and which type of 12 marks] amplifier is shown in the figure. (b Determine the DC voltages at all nodes of transistors Q1 and Q2. and the DC currents 18 marks] at the emitters of transistors Q1 and Q2 (c) Use the...
Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows a series regulator connected to the output of an unregulated power supply. The transistor has B =50, and a 6 volt Zener diode is used. When the load current, Il, is 1 amp the de input voltage from the unregulated supply, Vin, is 11 volt, VBE = 1 volt and the Zener diode current, Iz, is 20 mA. For these conditions, calculate Iz (i)...
Answer A & B & C as fast as u can
1. The amplifie parameters for each transistor and circuit components are given in the figure, 100 for both Q1 and Q2, and VeEVEe 0.7V. VA 200V for Q1, and VAo for r of the following figure consists of two CE amplifiers connected in cascade. The consider the β and capacitor is very large. (120 pts) RI V. Q2 -4V culate corresponding DC currents (U-) and DC voltages (V-Vs) through...
Problem 2 (10 points) In the amplifier shown in Fig. 2(a), assume Fig. 2(b) that I4 is ideal. Do not ignore the ro of the transistors for this problem, but you can assume that Ri is much smaller than any transistor o I1 and I2 ideal current sources. Also, assume in are (a) Find the small signal differential gain out/vdm of the Fig. 2(a) amplifier in terms of the appropriate small-signal parameters. Then express your answer in terms of appropriate...
PROBLEM 4 (20 pts) IMPORTANT: Assume all transistors are in saturation. a) Find the small-signal DC gain of the amplifier circuit when the small-signal voltage ViN is applied to the gate of M1. Ignore the body effect for M1 and M2. b) Find the small-signal DC gain of the amplifier circuit when the small-signal voltage Vin is applied to the body of M1. In this case, a DC bias voltage (VB) is applied to the gate of M1. Ignore the...
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