Question

Notify Me Bookmark

In the amplifier circuit shown in Fig. Q5, the MOSFETs, M1 and M2, are identical with a Threshold voltage magnitude of 1.2 V, a Conductance Parameter of 2 mA/V2 and they do not experience Channel Length Modulation effect. Fig. Q The MOSFET M1 is in saturation operation and its drain current, ID,M1 = 1.2 mA. (a) Show that the DC drain current of MOSFET M2, ID,M2 = ID,M1 with reasoning. (4 marks) (b) Determine the value of RREF. (4 marks) (c) Which MOSFET, M1 or M2, performs the amplification function? Why? (2 marks) (d) What is the configuration of the amplifier circuit? (1 mark) (e) Determine the values of the 2-port network equivalent parameters of the amplifier: Gm( or Av),Rin and Rout . (5 marks) (f) Determine the gain (vout /vs) of the amplifier. (2 marks) (g) If RA is zero, discuss the effects on the operation of the amplifier circuit. All the other resistors in the amplifier circuit are not changed. (2 marks)

In the amplifier circuit shown in Fig. Q5, the MOSFETs, M1 and M2, are identical with a Threshold voltage magnitude of 1.2 V, a Conductance Parameter of 2 mA/V2 and they do not experience Channel Length Modulation effect. Fig. Q The MOSFET M1 is in saturation operation and its drain current, ID,M1 = 1.2 mA. (a) Show that the DC drain current of MOSFET M2, ID,M2 = ID,M1 with reasoning. (4 marks) (b) Determine the value of RREF. (4 marks) (c) Which MOSFET, M1 or M2, performs the amplification function? Why? (2 marks) (d) What is the configuration of the amplifier circuit? (1 mark) (e) Determine the values of the 2-port network equivalent parameters of the amplifier: Gm( or Av),Rin and Rout . (5 marks) (f) Determine the gain (vout /vs) of the amplifier. (2 marks) (g) If RA is zero, discuss the effects on the operation of the amplifier circuit. All the other resistors in the amplifier circuit are not changed. (2 marks)

Image text
In the amplifier circuit shown in Fig. Q5, the MOSFETs, M1 and M2, are identical with a Threshold voltage magnitude of 1.2 V, a Conductance Parameter of 2 mA/V2 and they do not experience Channel Length Modulation effect. Fig. Q The MOSFET M1 is in saturation operation and its drain current, ID,M1 = 1.2 mA. (a) Show that the DC drain current of MOSFET M2, ID,M2 = ID,M1 with reasoning. (4 marks) (b) Determine the value of RREF. (4 marks) (c) Which MOSFET, M1 or M2, performs the amplification function? Why? (2 marks) (d) What is the configuration of the amplifier circuit? (1 mark) (e) Determine the values of the 2-port network equivalent parameters of the amplifier: Gm( or Av),Rin and Rout . (5 marks) (f) Determine the gain (vout /vs) of the amplifier. (2 marks) (g) If RA is zero, discuss the effects on the operation of the amplifier circuit. All the other resistors in the amplifier circuit are not changed. (2 marks)

Detailed Answer

1 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:
  • (1)

Similar/Related Questions

In the amplifier circuit shown in Fig. Q5, the BJT Q1 has β = 100 and VA = 100 V. The MOSFETs, M1 and M2, are identical with VTH = −1.0 V, Kp = 2 mA/V2 and they do not experience Channel Length Modulation effect. The temperature is 300 K. Fig. Q5 The BJT Q1 operates in the forward active mode and its collector current, IC, Q1 = 1.6 mA. Ignore the Early effect of the BJT when performing DC analysis. (a) Determine the drain current of the MOSFET M2, ID, M2. (6 marks) (b) Determine R3 that will give rise to the desired IC, Q1. (4 marks) (c) Determine the values of the 2-port network equivalent parameters of the amplifier: Gm (or Av), Rin and Rout. (8 marks) (d) Determine the gain (vout/vs) of the amplifier. (2 marks)
Solution
0 0

Q5. Figure Q5 shows a single-stage amplifier circuit. The device parameters are as follows -n-channel MOSFETs: Kn = 1 mA/V2, VTHN = 1 V and λn = 0.01 V−1. p-channel MOSFETs: Kp = 2.5 mA/V2, VTHP = −1 V, and λp = 0.01 V−1. Fig. Q5 MOSFET M1 is operating in saturation region and its DC drain current is 1 mA. Ignore Channel Length Modulation effect in DC analysis. (a) Determine the DC drain current of M3 and RREF. (b) Determine R2. (c) Identify the amplifier configuration. (d) Determine the small-signal parameters of MOSFET M M1:gm,M1, ro,M1 and gmb,M1. (e) Calculate the two-port network parameters of the amplifier: Rin, Rout and Gm (or Av ). (f) Estimate the voltage gain vout /vs of the amplifier.

Solution
0 0

Figure Q5 shows a single-stage amplifier circuit. The device parameters are as follows -n-channel MOSFETs: Kn = 1 mA/V2, VTHN = 1 V and λn = 0.01 V−1. p-channel MOSFETs: Kp = 2.5 mA/V2, VTHP = −1 V, and λp = 0.01 V−1. Fig. Q5 MOSFET M1 is operating in saturation region and its DC drain current is 1 mA. Ignore Channel Length Modulation effect in DC analysis. (a) Determine the DC drain current of M3 and RREF. (b) Determine R2. (c) Identify the amplifier configuration. (d) Determine the small-signal parameters of MOSFET M1:gm,M1, ro, M1 and gmb,M1. (e) Calculate the two-port network parameters of the amplifier: Rin, Rout and Gm (or Av). (f) Estimate the voltage gain vout /vs of the amplifier.
Solution
0 0