Question

Notify Me Bookmark

Assuming the op amp is ideal, derive an expression for the closed loop gain, G(vO/vI) of the circuit below. Use this circuit to design an inverting amplifier with a gain of 100 and an input resistance of 500 kΩ. Assume that for practical reasons you are limited to resistors less than 1 MΩ.

Assuming the op amp is ideal, derive an expression for the closed loop gain, G(vO/vI) of the circuit below. Use this circuit to design an inverting amplifier with a gain of 100 and an input resistance of 500 kΩ. Assume that for practical reasons you are limited to resistors less than 1 MΩ.

Image text
Assuming the op amp is ideal, derive an expression for the closed loop gain, G ( v 0 / v I ) of the circuit below. Use this circuit to design an inverting amplifier with a gain of 100 and an input resistance of 500 k Ω . Assume that for practical reasons you are limited to resistors less than 1 M Ω .

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

Glenn wants to design a very high gain amplifier while keeping high input resistance but the maximum value of resistors that he has available are of 100 MΩ. He choose following topology for designing high gain amplifiers while keeping high input resistance. a) Design the circuit for Glenn such that input resistance is 10 MΩ and gain of the amplifier is 120 V/V. b) Explain why this topology is better than simple non-inverting amplifier in terms of limitations of input resistance and gain. What caused this circuit to have high input resistance as well as high gain. (Hint: Current through R4 adds up with current from R3)
Solution
0 0

The inverting amplifier in the circuit shown has an input resistance of 400 kΩ, an output resistance of 4 kΩ, and an open-loop gain of 100, 000 . Assume that the amplifier is operating in its linear region. Using the realistic model of the op-amp, calculate the voltage gain (v0/vg) of the amplifier for and R1 = 5 kΩ and R2 = 100 kΩ. In your answer, use point/dot as decimal point. Do NOT use comma. Write your answer with 4 digits to the right of the decimal point. If you find a negative value, don't forget to include a minus sign. (For example, if you calculate the gain as -7.569683, then you should write -7.5697)
Solution
0 0

Consider the amplifier shown below. Assume a supply voltage of 2.5 V, a bias current of 100 μA, a load resistance of 10 kΩ, Vt0 = 500 mV, and kn′ = 50 μA/V2. a) What is the maximum possible small-signal gain? Find the corresponding W/L, V1 and DC operating point (i.e., all node voltages and branch currents) if VoV(min) = 150 mV and W/L(max) = 32. (Note: The W/L ratio is restricted to be an integer. ) b) The second- and higher-order terms in the gain expression are known as distortion. (Obviously, you cannot neglect this in this problem. . . ) Redesign the circuit such that for vi = 50 mV, the distortion term is less than 3.5%. (Hint: Take the ratio of the second-order and linear terms. ) Your circuit must still meet the constraints imposed in part (a). Recalculate the WIL, V1, DC operating point, and small-signal gain.
Solution
0 0