Question

Notify Me Bookmark

Consider the MOSFET feedback amplifier circuit shown below: a) Identify the type of feedback amplifier depicted. (5 points) b) Analyze the feedback network and determine R11, R22, and K. (10 points) c) Construct the loaded open-loop gain circuit and derive an expression for A. (10 points) d) Using the results of b) and c), determine Af, Rif, and Rof (10 points) You must include the effects of channel length modulation in your analysis.

Consider the MOSFET feedback amplifier circuit shown below: a) Identify the type of feedback amplifier depicted. (5 points) b) Analyze the feedback network and determine R11, R22, and K. (10 points) c) Construct the loaded open-loop gain circuit and derive an expression for A. (10 points) d) Using the results of b) and c), determine Af, Rif, and Rof (10 points) You must include the effects of channel length modulation in your analysis.

Image text
Consider the MOSFET feedback amplifier circuit shown below: a) Identify the type of feedback amplifier depicted. (5 points) b) Analyze the feedback network and determine R 11 , R 22 , and K . ( 10 points) c) Construct the loaded open-loop gain circuit and derive an expression for A . (10 points) d) Using the results of b ) and c), determine A f , R i f , and R o f ( 10 points)
You must include the effects of channel length modulation in your analysis.

Detailed Answer

3 0

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

Answer
Doubtrix Logo

This Problem has been solved!

You'll get a detailed, step-by-step and expert verified solution.

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
Login Sign Up
  • Student Reviews:
  • (3)
  • Correct answers (3)
  • Complete solution (3)
  • Step-by-step solution (3)
  • Fully explained (3)

Similar/Related Questions

Consider the MOSFET feedback amplifier circuit shown below: a) Identify the type of feedback amplifier depicted. (5 points) b) Analyze the feedback network and determine R11, R22, and K. (10 points) c) Construct the loaded open-loop gain circuit and derive an expression for A. (10 points) d) Using the results of b ) and c), determine Af, Rif, and Rof. (10 points) You must include the effects of channel length modulation in your analysis.
Solution
0 0

Consider the MOSFET common-source amplifier shown below: a) Using the direct analysis method, derive expressions for the location of all low-frequency poles and zeroes of the amplifier circuit's transfer function. b) Using the Miller method, derive expressions for the location of all high-frequency poles and zeroes of the amplifier circuit's transfer function. You may neglect the effects of channel length modulation in your analysis. NOTE: The midband gain of the amplifier shown above can be expressed as AMID = −gmRD 1+gmRS1
Solution
0 0

The schematic of a inverter using a single MOSFET transistor is shown below: The threshold voltage of the transistor Q1 is |VT| = 1 V and channel length modulation can be neglected. (a) Identify a suitable model of the transistor for analysing the above circuit and describe the model mathematically, graphically or as an equivalent circuit. Sketch the voltage-voltage transfer characteristic, Vo - Vi, for the circuit, clearly identifying the state of the transistor based on the proposed model. (b) If the transistor is saturated where Vi < VA and not saturated where Vi > VA, derive an expression for Vo|Vi=VA in terms of the relevant circuit and transistor parameters. If kn = 100 μAV-2 and R = 100 kΩ, determine Vo|Vi=VA in terms of VDD. (c) Assuming no leakage current, calculate the VOH min of the inverter. If, instead, there is a leakage current with equivalent resistance of 3 MΩ when VGS < VT, determine the adjusted VOHmin. Calculate the power lost when Vi = VT/2 in these circumstances.
Solution
0 0

11.65 The feedback transresistance amplifier in Fig. P11.65 utilizes two identical MOSFETs biased by ideal current sources I = 0.4 mA. The MOSFETs are sized to operate at VOV = 0.2 V and have Vt = 0.5 V and VA = 16 V. The feedback resistance RF = 10 kΩ. (a) If Is has a zero dc component, find the dc voltage at the input, at the drain of Q1, and at the output. (b) Find gm and ro of Q1 and Q2. (c) Provide the A circuit and derive an expression for A in terms of gm1, ro1, gm2, ro2, and RF. (d) What is β ? Give an expression for the loop gain Aβ and the amount of feedback (1+Aβ). (e) Derive an expression for Af. (f) Derive expressions for Ri, Rin , Ro, and Rout . (g) Evaluate A, β, Aβ, Af, Ri, Ro, Rin , and Rout for the component values given. Figure P11.65 11.65 The feedback transresistance amplifier in Fig. P11.65 utilizes two identical MOSFETs biased by ideal current sources I = 0.4 mA. The MOSFETs are sized to operate at VOV = 0.2 V and have Vt = 0.5 V and VA = 16 V. The feedback resistance RF = 10 kΩ. (a) If Is has a zero dc component, find the dc voltage at the input, at the drain of Q1, and at the output. (b) Find gm and ro of Q1 and Q2. (c) Provide the A circuit and derive an expression for A in terms of gm1, ro1, gm2, ro2, and RF. (d) What is β ? Give an expression for the loop gain Aβ and the amount of feedback (1+Aβ). (e) Derive an expression for Af. (f) Derive expressions for Ri, Rin , Ro, and Rout . (g) Evaluate A, β, Aβ, Af, Ri, Ro, Rin , and Rout for the component values given. Figure P11.65

Solution
0 0