Question

Notify Me Bookmark

a) What is an operational amplifier (op-amp)? b) For the circuit given below, compute the output voltage, Uo as a function of the input signals. Describe the mathematical operation of this circuit and name this type of operational amplifier circuit. Assume that the op-amp is ideal. Figure 2: Amplifier circuit

a) What is an operational amplifier (op-amp)? b) For the circuit given below, compute the output voltage, Uo as a function of the input signals. Describe the mathematical operation of this circuit and name this type of operational amplifier circuit. Assume that the op-amp is ideal. Figure 2: Amplifier circuit

Image text
a) What is an operational amplifier (op-amp)? b) For the circuit given below, compute the output voltage, U o as a function of the input signals. Describe the mathematical operation of this circuit and name this type of operational amplifier circuit. Assume that the op-amp is ideal. Figure 2: Amplifier circuit

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

In the circuit below, the operational amplifier is ideal with the output voltage limitations V+ = 12 V and V− = −12 V. D is an ideal diode. a) Derive the symbolic expression for Vo in terms of VI. You should clearly show every step in your answer. b) For Ri = 12 kΩ, RF = 3 kΩ, RL = 5 kΩ and with the Vi = 8⋅sin⁡(ωt) input voltage signal, calculate V0 and draw V0 voltage waveform with respect to Vi specifying the important values on the axes on the plot(s). Every numerical value on the plot(s) should be explained in detail on your answer sheet. c) What is the function of this circuit? Considering its function, what is the most important drawback (if any) of this circuit? Explain your answer.
Solution
0 0

The circuit of Figure 0.6 is known as a source-follower configuration. It achieves a DC level shift between the input and output. The value of this shift is determined by the current I0. Assume γ = 0.4, 2|φf| = 0.6 V, VT0 = 0.43 V, k’ = 115 µA/V2, and λ = 0. The NMOS device has W/L = 5.4µ/1.2µ such that the short channel effects are not observed. a. Derive an expression giving Vi as a function of Vo and VT(Vo). If we neglect body effect, what is the nominal value of the level shift performed by this circuit. b. The NMOS transistor experiences a shift in VT due to the body effect. Find VT as a function of Vo for Vo ranging from 0 to 1.5V with 0.25 V intervals. Plot VT vs. Vo. c. Plot Vo vs. Vi as Vo varies from 0 to 1.5 V with 0.25 V intervals. Plot two curves: one neglecting the body effect and one accounting for it. How does the body effect influence the operation of the level converter? At Vo (body effect) = 1.5 V, find Vo (ideal) and, thus, determine the maximum error introduced by body effect.
Solution
2 0

Assume that the MOSFET has the following parameters: Vt = 1 V, K = 0.4 mA/V2 VA = 40 V. It is connected as an amplifier as shown in Figure Q4 and vs is an AC input voltage and vo is the AC output voltage. The DC drain voltage VD is set to be 0 V. Further assume that all the capacitors in the circuit are very large. Figure Q7. (a) Which type of amplifier configuration does the above circuit (3 marks) belong to? What are the electrical properties of this type of amplifier configuration? (b) Show that the MOS transistor operates in the saturation mode. (3 marks) State one electrical characteristic of a saturated MOS transistor. (c) Determine the drain current ID. (10 marks) (d) Design the load resistance RL such that the AC voltage gain vo/vs of (10 marks) the MOSFET amplifier equals -10 . (e) Suppose the amplitude of AC input vs is 0.2 V and the AC voltage (4 marks) gain of the amplifier equals -10. Do we have a distorted AC output waveform?

Solution
0 0