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Consider the amplifier given in the figure below. Assume that the transistors Q1 and Q2 are...
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...
Q #4: (6 marks). For the following circuit, all the transistors are biased in saturation region w...
Q #4: (6 marks). For the following circuit, all the transistors are biased in saturation region with identical length and width of 1μm and 6.5μm, respectively. It is g 200μΑν-2, Wal Calculate the small signal parameters gm and ro for Q1. What is the value of voltage gain (Av)? iven that, VDD=5V, Vt= 1V, μ.co,- sor and 'REF-0.5mA. Draw the small signal circuit of the following amplifier. VDD es 02 REP ei Vo
Q #4: (6 marks). For the following...
Q #4: (6 marks). For the following circuit, all the transistors are biased in saturation region...
Q #4: (6 marks). For the following circuit, all the transistors are biased in saturation region with identical length and width of 1μm and 6.5μm, respectively. It is g 200μΑν-2, Wal Calculate the small signal parameters gm and ro for Q1. What is the value of voltage gain (Av)? iven that, VDD=5V, Vt= 1V, μ.co,- sor and 'REF-0.5mA. Draw the small signal circuit of the following amplifier. VDD es 02 REP ei Vo
Consider the circuit shown in Figure 1. Transistors Q1 and Q2 are identical and can be...
Consider the circuit shown in Figure 1. Transistors Q1 and Q2
are identical and can be
describe with the following parameters: IS = 5
×10−16 A, β = 100 and VA = 5 V.
1. when Vin = 1,5V
ICQ1=ICQ2.
2. Write an equation for currents IC1 and
IC2 in terms of the voltages
Vin(VBQ1) and
VBQ2. For it
you can omit the Early effect and assume IE ≈
IC. Solve the equations to find so
Analyze the value of...
Problem 1: (4 pts) The circuit below uses current source biasing and two amplifier stages. Assume...
Problem 1: (4 pts) The circuit below uses current source biasing and two amplifier stages. Assume the transistors are biased so they have the same 9m and ro values, and that the current sources have output resistance ro equal to the ro of the two transistors. In other words, in the small signal model you will replace the de current sources with resistors of value ro Q2 Ui Q1 U) (a) Draw a small-signal model for this amplifier. Be sure...
Q2 Q1 Q9! I3 Vout Q5 1B 5k2 15V Figure Q3 c) Assuming that the voltage...
Q2 Q1 Q9! I3 Vout Q5 1B 5k2 15V Figure Q3 c) Assuming that the voltage gains of the two common collector stages 3 and 5 are both unity, make reasonable approximations to estimate the overall small signal voltage gain of the amplifier, Av, where: 10 Assume that all the transistors have an ac current gain, ?,-| 00 and large DC current gain. The Early voltage, V 100 V and transistor output resistance can be taken as ?,a where le...
Q6. An amplifier circuit using an n-MOSFET is shown in Fig. Q6. The n-MOSFET has the...
Q6. An amplifier circuit using an n-MOSFET is shown in Fig. Q6. The n-MOSFET has the following parameters: K'-1 mA/V2 and λ-0.02 w. v°' is a small signal AC voltage ource 8V 8V Vout Ra 2.56 mA Fig. Q6 (a) Calculate the DC gate voltage, Va. (b) Assuming that the n-MOSFET is operating in the saturation region and neglecting channel length modulation, calculate the threshold voltage, VrHN, given that the voltage drop across the de current sorce, Inas, has been...
Q2: In the following BUT circuit, small signal parameters for Q1 and Q2 are labeled symbolically...
Q2: In the following BUT circuit, small signal parameters for Q1 and Q2 are labeled symbolically (8., and B). Assuming V, - . Please derive the symbolie mathematical expressions for (a) Small signal voltage gain 4 =. .(b) input resistance R. (e) output resistance R . Hints: (1) This problem has identical requirements as Quiz!20. (2) Use the techniques discussed in Lecture#21. Vcc Q : 8MPL B Q2: 8m2» !-2,B2 Vin La te Vout
A MOSFET is wired as a common-source amplifier as shown below. The input voltage vIN is...
A MOSFET is wired as a common-source amplifier as shown below.
The input voltage vIN is the total of the source for
biasing the circuit at its operating point (vBIAS), and
a small signal ac source providing the signal that we want to
amplify (vin). The total output voltage is
vO.
a) Assume VDD = 5?, VIN = 2?, and ? = 4?Ω
in the circuit and the MOSFET parameters are K =
0.5??/?2, VTH 1?, and ? = 0.05V-1....
12 = 5x 10-16 (A), 2. Consider the BJT circuit below, where Isi = 2 x...
12 = 5x 10-16 (A), 2. Consider the BJT circuit below, where Isi = 2 x 10"""[A), B1 = 100, 1:2 = 5 x 10 B = 50, V1 = 26 [mV], VBB = 2 [V], Vcc=5 [V], R1 = 1 [kS2], and VA=0. (a) We want to operate Q2 (pnp BJT) in "soft saturation region with Base-Collect junction being forward biased by 200 [mV]. Find input supply voltage (large signal), Vsupp, and output voltage (large signal), Vout, for the...
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...
Q #4: (6 marks). For the following circuit, all the transistors are biased in saturation region with identical length and width of 1μm and 6.5μm, respectively. It is g 200μΑν-2, Wal Calculate the small signal parameters gm and ro for Q1. What is the value of voltage gain (Av)? iven that, VDD=5V, Vt= 1V, μ.co,- sor and 'REF-0.5mA. Draw the small signal circuit of the following amplifier. VDD es 02 REP ei Vo
Q #4: (6 marks). For the following...
Q #4: (6 marks). For the following circuit, all the transistors are biased in saturation region with identical length and width of 1μm and 6.5μm, respectively. It is g 200μΑν-2, Wal Calculate the small signal parameters gm and ro for Q1. What is the value of voltage gain (Av)? iven that, VDD=5V, Vt= 1V, μ.co,- sor and 'REF-0.5mA. Draw the small signal circuit of the following amplifier. VDD es 02 REP ei Vo
Consider the circuit shown in Figure 1. Transistors Q1 and Q2
are identical and can be
describe with the following parameters: IS = 5
×10−16 A, β = 100 and VA = 5 V.
1. when Vin = 1,5V
ICQ1=ICQ2.
2. Write an equation for currents IC1 and
IC2 in terms of the voltages
Vin(VBQ1) and
VBQ2. For it
you can omit the Early effect and assume IE ≈
IC. Solve the equations to find so
Analyze the value of...
Problem 1: (4 pts) The circuit below uses current source biasing and two amplifier stages. Assume the transistors are biased so they have the same 9m and ro values, and that the current sources have output resistance ro equal to the ro of the two transistors. In other words, in the small signal model you will replace the de current sources with resistors of value ro Q2 Ui Q1 U) (a) Draw a small-signal model for this amplifier. Be sure...
Q2 Q1 Q9! I3 Vout Q5 1B 5k2 15V Figure Q3 c) Assuming that the voltage gains of the two common collector stages 3 and 5 are both unity, make reasonable approximations to estimate the overall small signal voltage gain of the amplifier, Av, where: 10 Assume that all the transistors have an ac current gain, ?,-| 00 and large DC current gain. The Early voltage, V 100 V and transistor output resistance can be taken as ?,a where le...
Q6. An amplifier circuit using an n-MOSFET is shown in Fig. Q6. The n-MOSFET has the following parameters: K'-1 mA/V2 and λ-0.02 w. v°' is a small signal AC voltage ource 8V 8V Vout Ra 2.56 mA Fig. Q6 (a) Calculate the DC gate voltage, Va. (b) Assuming that the n-MOSFET is operating in the saturation region and neglecting channel length modulation, calculate the threshold voltage, VrHN, given that the voltage drop across the de current sorce, Inas, has been...
Q2: In the following BUT circuit, small signal parameters for Q1 and Q2 are labeled symbolically (8., and B). Assuming V, - . Please derive the symbolie mathematical expressions for (a) Small signal voltage gain 4 =. .(b) input resistance R. (e) output resistance R . Hints: (1) This problem has identical requirements as Quiz!20. (2) Use the techniques discussed in Lecture#21. Vcc Q : 8MPL B Q2: 8m2» !-2,B2 Vin La te Vout
A MOSFET is wired as a common-source amplifier as shown below.
The input voltage vIN is the total of the source for
biasing the circuit at its operating point (vBIAS), and
a small signal ac source providing the signal that we want to
amplify (vin). The total output voltage is
vO.
a) Assume VDD = 5?, VIN = 2?, and ? = 4?Ω
in the circuit and the MOSFET parameters are K =
0.5??/?2, VTH 1?, and ? = 0.05V-1....
12 = 5x 10-16 (A), 2. Consider the BJT circuit below, where Isi = 2 x 10"""[A), B1 = 100, 1:2 = 5 x 10 B = 50, V1 = 26 [mV], VBB = 2 [V], Vcc=5 [V], R1 = 1 [kS2], and VA=0. (a) We want to operate Q2 (pnp BJT) in "soft saturation region with Base-Collect junction being forward biased by 200 [mV]. Find input supply voltage (large signal), Vsupp, and output voltage (large signal), Vout, for the...
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