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Asked: November 29, 2023In: electronic circuits or microelectronics

8.(10pts) Using a voltage test source and a hybrid-π model to derive expression for ac equivalent resistance of the following “diode connected” MOSFET often used as “active load” in amplifiers

Anonymous

Asked: November 29, 2023In: electronic circuits or microelectronics

3.(15pts) For the circuit below calculate IB, IC, VB and VCE if β=100. Given: RB=100k, RE=3.3k, Rsig=39k and RL=2.2k. Assume the power supplies ±5V. Draw ac equivalent circuit with hybrid-π model (use VA=100V) and calculate the voltage gain vo/vi and vo/vsig. Derive an equation for the input resistance Rin. Next write expression for Rout by utilizing the resistance-reflection formula.

Anonymous

Asked: November 29, 2023In: electronic circuits or microelectronics

2.(15pts) Given NFETs with μn Cox’=0.4mA/V2 and Vtn=0.4V. W/L=4 for Q1 and Q2; W/L=10 for Q3 and Q4. Assume λ=0. Power supply VDD=2V. Calculate voltages VGS1, V2, and the currents ID1 and I2.

Anonymous

Asked: November 29, 2023In: electronic circuits or microelectronics

2.(15pts) Given NFETs with μn Cox’=0.4mA/V2 and Vtn=0.4V. W/L=4 for Q1 and Q2; W/L=10 for Q3 and Q4. Assume λ=0. Power supply VDD=2V. Calculate voltages VGS1, V2, and the currents ID1 and I2.

Anonymous

Asked: November 29, 2023In: digital electronics

1.(10pts) Given that VBB=3V and β=75 Calculate the currents and voltages marked (assume VBE=0.7V), draw a load line with the corresponding BJT curve and mark the Q-point.

Anonymous

Asked: September 27, 2023In: Digital signal processing

The transfer function of digital causal system is given as follows 1.Find the difference equation 2.Draw Direct Form-I and Direct Form-II realization structure. 3.Draw cascade form, parallel form realization.

hwmadeeasy Begginer

$H(z)=\frac{1-z^{-1}}{(1-0.2z^{-1} -0.15z^{-2)}}$ 1.Find the difference equation 2.Draw Direct Form-I and Direct Form-II realization structure. 3.Draw cascade form, parallel form realization.

Asked: September 27, 2023In: Digital signal processing

In a certain concert hall, echoes of the original audio signal x(n) are generated due to the reflections at the walls and ceiling. The audio signal experienced by the listener y(n) is a combination of x(n) and its echoes. Let y(n) = x(n) + αx(n − k) where k is the amount of delay in samples and α is its relative strength. We want to estimate the delay using the correlation analysis. 1. Determine analytically the crosscorrelation ryx() in terms of the autocorrelation rxx(). 2. Let x(n) = cos(0.2πn) + 0.5 cos(0.6πn), α = 0.1, and k = 50. Generate 200 samples of y(n) and determine its crosscorrelation. Can you obtain α and k by observing ryx()?

hwmadeeasy Begginer

In a certain concert hall, echoes of the original audio signal x(n) are generated due to the reflections at the walls and ceiling. The audio signal experienced by the listener y(n) is a combination of x(n) and its echoes. Let ...

Asked: September 1, 2023In: microelectronics by sedra and smith 8th ed

D 7.138 A CE amplifier has a midband voltage gain of |Am|= 100 V/V, a lower 3-dB frequency fL = 100 Hz, and a higher 3-dB frequency fH = 500 kHz. In Chapter 10 we will learn that connecting a resistance Re in the emitter of the BJT results in lowering fL and raising fH by the factor (1 + gmRe). If the BJT is biased at IC = 1 mA, find Re that will result in fH at least equal to 2 MHz. What will the new values of fL and AM be?

Venkyelectrical Enlightened

D 7.138 A CE amplifier has a midband voltage gain of |Am|= 100 V/V, a lower 3-dB frequency fL = 100 Hz, and a higher 3-dB frequency fH = 500 kHz. In Chapter 10 we will learn that connecting a ...

Asked: September 1, 2023In: microelectronics by sedra and smith 8th ed

*7.137 For the follower circuit in Fig. P7.137, let transistor Q1 have β =50 and transistor Q2 have β =100, and neglect the effect of ro. Use VBE = 0.7 V. (a) Find the dc emitter currents of Q1 and Q2. Also, find the dc voltages VB1 and VB2. (b) If a load resistance RL =1 kΩ is connected to the output terminal, find the voltage gain from the base to the emitter of Q2, vo/vb2, and find the input resistance Rib2 looking into the base of Q2. (Hint: Consider Q2 as an emitter follower fed by a voltage vb2 at its base.) (c) Replacing Q2 with its input resistance Rib2 found in (b), analyze the circuit of emitter follower Q1 to determine its input resistance Rin and the gain from its base to its emitter, ve1/vb1. (d) If the circuit is fed with a source having a 100- kΩ resistance, find the transmission to the base of Q1, vb1/vsig. (e) Find the overall voltage gain vo/vsig. Figure P7.137 (a) 0.1 mA, 5 mA, 1.5 V, 0.8 V; (b) 0.995 V/V, 101.5 kΩ; (c) 456 kΩ, 0.9975 V/V; (d) 0.82 V/V; (e) 0.814 V/V

Venkyelectrical Enlightened

*7.137 For the follower circuit in Fig. P7.137, let transistor Q1 have β =50 and transistor Q2 have β =100, and neglect the effect of ro. Use VBE = 0.7 V. (a) Find the dc emitter currents of Q1 and Q2. ...

Asked: September 1, 2023In: microelectronics by sedra and smith 8th ed

**7.136 For the circuit in Fig. P7.136, called a boot-strapped follower: (a) Find the dc emitter current and gm, re, and rπ. Use β = 100. (b) Replace the BJT with its T model (neglecting ro), and analyze the circuit to determine the input resistance Rin and the voltage gain vo/vsig. (c) Repeat (b) for the case when capacitor CB is open-circuited. Compare the results with those obtained in (b) to find the advantages of bootstrapping.

Venkyelectrical Enlightened

**7.136 For the circuit in Fig. P7.136, called a boot-strapped follower: (a) Find the dc emitter current and gm, re, and rπ. Use β = 100. (b) Replace the BJT with its T model (neglecting ro), and analyze the circuit to ...

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8.(10pts) Using a voltage test source and a hybrid-π model to derive expression for ac equivalent resistance of the following “diode connected” MOSFET often used as “active load” in amplifiers

2.(15pts) Given NFETs with μn Cox’=0.4mA/V2 and Vtn=0.4V. W/L=4 for Q1 and Q2; W/L=10 for Q3 and Q4. Assume λ=0. Power supply VDD=2V. Calculate voltages VGS1, V2, and the currents ID1 and I2.

2.(15pts) Given NFETs with μn Cox’=0.4mA/V2 and Vtn=0.4V. W/L=4 for Q1 and Q2; W/L=10 for Q3 and Q4. Assume λ=0. Power supply VDD=2V. Calculate voltages VGS1, V2, and the currents ID1 and I2.

1.(10pts) Given that VBB=3V and β=75 Calculate the currents and voltages marked (assume VBE=0.7V), draw a load line with the corresponding BJT curve and mark the Q-point.

The transfer function of digital causal system is given as follows 1.Find the difference equation 2.Draw Direct Form-I and Direct Form-II realization structure. 3.Draw cascade form, parallel form realization.

A shunt generator delivers 450 A at 230 V and ...

15.8 Find the characteristic equation of the circuit in Fig. ...

15.25 Derive the transfer function Vo2/Vo1 of the noninverting integrator ...

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