Question

Notify Me Bookmark

(a) Sketch the transfer curve for an n-channel JFET defined by IDSS = 8 mA, and Vp = -4 V. (b) Determine input resistance (Rin), output resistance (Ro), and voltage gain (Av) in the mid-band for the amplifier network shown below if IDSS = 10 mA, Vp = -6 V, and ro = 40 kΩ.

(a) Sketch the transfer curve for an n-channel JFET defined by IDSS = 8 mA, and Vp = -4 V. (b) Determine input resistance (Rin), output resistance (Ro), and voltage gain (Av) in the mid-band for the amplifier network shown below if IDSS = 10 mA, Vp = -6 V, and ro = 40 kΩ.

Image text
(a) Sketch the transfer curve for an n-channel JFET defined by IDSS = 8 mA, and Vp = -4 V. (b) Determine input resistance (Rin), output resistance (Ro), and voltage gain (Av) in the mid-band for the amplifier network shown below if IDSS = 10 mA, Vp = -6 V, and ro = 40 kΩ.

Detailed Answer

2 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:
  • (2)
  • Correct answers (2)
  • Complete solution (2)
  • Step-by-step solution (2)
  • Fully explained (2)

Similar/Related Questions

In the amplifier circuit, given VCC = 10 V, R1 = 160 kΩ, R2 = 40 kΩ, RC = 2 kΩ, and RL = 2 kΩ, answer the following questions. Assume the BJT has a β = 100. (a) Calculate RE to make the BJT's operating point (Q-point) current ICQ = 2 mA. (b) Assuming ro = ∞ and CE = ∞, draw the small-signal equivalent circuit of the amplifier and calculate the amplifier's input resistance (Rin), output resistance (Rout), and voltage gain (Av). (c) Assuming ro = ∞ and CE = 0, draw the small-signal equivalent circuit of the amplifier and derive the expression for the voltage gain (Av). Then, calculate the value of Av. (d) Assuming ro = 10 kΩ and CE = 0, draw the small-signal equivalent circuit of the amplifier and derive the expressions for Rin , Rout , and Av. Then, calculate their values. (e) To operate as an amplifier, in which operating region should the BJT be biased? Explain the reason with the help of the voltage transfer characteristic.In the amplifier circuit, given VCC = 10 V, R1 = 160 kΩ, R2 = 40 kΩ, RC = 2 kΩ, and RL = 2 kΩ, answer the following questions. Assume the BJT has a β = 100. (a) Calculate RE to make the BJT's operating point (Q-point) current ICQ = 2 mA. (b) Assuming ro = ∞ and CE = ∞, draw the small-signal equivalent circuit of the amplifier and calculate the amplifier's input resistance (Rin), output resistance (Rout), and voltage gain (Av). (c) Assuming ro = ∞ and CE = 0, draw the small-signal equivalent circuit of the amplifier and derive the expression for the voltage gain (Av). Then, calculate the value of Av. (d) Assuming ro = 10 kΩ and CE = 0, draw the small-signal equivalent circuit of the amplifier and derive the expressions for Rin , Rout , and Av. Then, calculate their values. (e) To operate as an amplifier, in which operating region should the BJT be biased? Explain the reason with the help of the voltage transfer characteristic.
Solution
0 0

Q 3. The depletion NMOS amplifier of Figure 2 has Rs = 500 Ω, RL = 10 kΩ, RSR = RD = 5 kΩ, RG = 100 kΩ, IDD = 10 mA, Vp = −4 V, |VM| = 200 V, and VDD = 12 V. Calculate (a) the input resistance Rin = vs/is, (b) the no-load voltage gain Avo = vo/vg, (c) the output resistance Ro, and (d) the overall voltage gain Av = vL/vs.
Solution
0 0

Consider the MOSFET differential amplifier shown below, with IO = 2 mA, and RL = 10 kΩ, RSS = 100 kΩ, VDD = +8 V and VSS = −8 V. The NMOS transistors in the circuit are nominally identical, with kn = 2 mA/V2, VTnn = 1.0 V and ro = 100 kΩ. The PMOS transistors in the circuit are nominally identical, with kp = 2 mA/V2, |VTp| = 1.0 V and ro = 100 kΩ. a) First consider the DC bias point. Assuming that the current mirror requires at least IV (across Io source) in order to operate, what are the maximum and minimum common-mode DC input voltages (V1 = V2) over which the differential amplifier can operate with both transistors in saturation mode? b) Consider ac small signal operation for differential input (v1 = +Δv/2 and v2 = −Δv/2) and the indicated output (v0 across RL). Find the overall voltage gain (v0/Δv), including sign. c) Find the input resistance and output resistance corresponding to this mode (output resistance is looking to left from capacitor). d) Next, consider ac small signal operation for common-mode input (v1 = v2 = Δv) and the indicated vo. Find the overall voltage gain ((vo/Δv) corresponding to this mode. e) Find the common-mode rejection ratio (CMRR).
Solution
0 0