Question

Notify Me Bookmark

You have available two resistors having values exactly 470 Ω and 1.0 kΩ respectively, and a +3.0 V supply. You must use only these to produce the closest you can to +1.0 V output. Draw the circuit diagram, and calculate the actual voltage produced. Which resistor must be shunted (paralleled) by a third resistor to produce exactly +1.0 V output? What is the value of that third resistor? Calculate the power dissipation in each of the three resistors individually, when nothing is connected to the circuit output.

You have available two resistors having values exactly 470 Ω and 1.0 kΩ respectively, and a +3.0 V supply. You must use only these to produce the closest you can to +1.0 V output. Draw the circuit diagram, and calculate the actual voltage produced. Which resistor must be shunted (paralleled) by a third resistor to produce exactly +1.0 V output? What is the value of that third resistor? Calculate the power dissipation in each of the three resistors individually, when nothing is connected to the circuit output.

Image text
  1. You have available two resistors having values exactly 470 Ω and 1.0 k Ω respectively, and a +3.0 V supply. You must use only these to produce the closest you can to +1.0 V output. Draw the circuit diagram, and calculate the actual voltage produced. Which resistor must be shunted (paralleled) by a third resistor to produce exactly +1.0 V output? What is the value of that third resistor? Calculate the power dissipation in each of the three resistors individually, when nothing is connected to the circuit output.

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

SRAM (static random access memory): This problem concerns the design of a 4-resistor 2-transistor (BJT) SRAM cell (flip-flop) having a supply voltage of VCC = 5.0 V. Assume that the BJT's CE saturation voltage (VCE,sat) in the ON state is 0.2 V. Assume that the current amplification of the transistors is β = 50. (a) Draw the circuit diagram. (b) Choose one of the two stable states of the flip-flop, and indicate all circuit elements that consume power. Circle these circuit elements. (c) Write an equation for the power consumed by each of these circuit elements (circled under the previous question). Sum up all these powers (summands) to obtain the total power consumed by the circuit. Which of these summands represents the greatest power? Give the approximate power consumed by the circuit by writing an equation that has just the dominant summand. (d) Design a 4-resistor 2-transistor SRAM circuit in which the dominant power-consuming circuit element consumes a power of about 1 μW. What is the collector current? Suggest numerical values for the resistances of all four resistors. (e) What would be the power consumed by a 1 Gbit SRAM circuit using the memory cell you just designed? Do you have any comments on the result?
Solution
0 0

For the amplifier below, following design information is provided: VDD = 3.3 V, R = 2.4 kΩ, ISS = 1.8 mA, k1 = k2 = 5 mA/V2, VTH,1 = VTH,2 = 0.5 V, λ = 0.1 V−1, γ = 0, ki′ = μ0Cox, ki = μ0 Cox(W L)i. Assume that both transistors are identical and in the saturation region. Finally, NMOS and PMOS bulk terminals are connected to the ground and VDD, respectively. a) What is the DC bias voltage for M1 and M2 given that the voltage drop across ISS is 0.4 V ? You can neglect the channel length modulation, here. Check that the transistors are in the correct operation-mode. b) The resistors will be realized using identical PMOS transistors M3 and M4. If the transistors to be used will have k3 = k4 = 1.5 mA/V2, what will be their overdrive voltages? Check that the transistors are in the correct operation-mode. c) What is the differential voltage gain AV,diff = Vout/Vid in dB ? d) ISS will be realized as a cascode current source. Assume that the voltage drop of 0.4 V is equally shared by the two transistors, M5 and M6 having k5′ = k6′ = 0.5 mA/V2 and VTH, 5 = VTH, 6 = 0.5 V. Assuming the gate voltages of both transistors are 1 V, find the W/L ratios of each device. Once again, you can neglect the channel length modulation here. e) Considering (d), how would the W/L ratios qualitatively change (increase/decrease/stays the same), if γ > 0 ? Explain your reasoning analytically, i. e. , using appropriate equations. f) Using the cascode current source, calculate the common-mode gain of the circuit AV, CM = Vout /Vin in dB, where Vin . s applied to the gates of both M1 and M2. Assume λ = 0.1 V−1 for M5 and M6. g) Calculate the CMRR of the circuit in dB.
Solution
0 0

The below BJT common-emitter amplifier with β = 100 is fed with a signal source that has a resistance of 5 kΩ. A load resistor of 5 kΩ is connected to the output of the circuit as shown in the figure. The input resistance of the amplifier is Ri = 2 kΩ and its output resistance is Ro = 5 kΩ. Find the bias current (1), and the small signal parameters. Use VT = 25 mV. If the peak value of Vπ (denoted by V^π ) is to be limited to 5 mV, what are the corresponding peak value of Vsig (denoted by V^sig ) and peak value of V0 (denoted by v^0 ) in presence of the load resistor? Instructions: Use the given input and output resistance values and the equations related to these quantities (from the lecture notes) to find the small signal parameters and the bias current. To find the peak value of vsig, you need to draw the small signal circuit. replace v/with vsig in series with a 5 k resistor. From the signal circuit, find out how Vπ is related to Vsig. Calculate the open loop voltage gain, and use it with the given load resistor value and the voltage amplifier model to find out how V0 is related to Vsig in the presence of the load. You can also solve the signal circuit to find the answer. v^sig = 17.5 mV V^0 = 1.5 V v^0 = 0.4 V
Solution
0 0