Q6. For the amplifier circuit shown in Fig. Q6, the MOS Transistor Ml

Question

Notify Me Bookmark

Q6. For the amplifier circuit shown in Fig. Q6, the MOS Transistor Ml has the following parameters: Kn = 1 mAV−2, and VTHN = 1 V. MOS transistors M2 and M3 are identical and have the following parameters: Kp = 1 mAV−2, and VTHP = −1 V. Fig. Q6 (a) Perform the DC analysis of the amplifier circuit shown in Fig. Q6, and show that the DC gate voltage of Ml is 5 V. You need to explain briefly your answer. (b) Calculate the value of RS such that the drain current of MI is 4 mA. Verify that the Ml is operating in the saturation region. [ Ans: Rs = 0.5 kΩ] (c) Calculate the parameters, gm and ro, of the small-signal model of the transistor Ml. [Ans: gm, M1 = 4 mAV−1, and ro, M1 = ∞ ] (d) What is the configuration of this amplifier? (e) Calculate the values of Rin , and Rout . [Ans: Rin = 5 kΩ and Rout = 2 kΩ ] (f) Estimate the voltage gain, Av( = vout /vin ). [ Ans: AV = −1.78]

Image text

Q6. For the amplifier circuit shown in Fig. Q6, the MOS Transistor

M_{l}

has the following parameters:

K_{n} = 1 {m A V}^{- 2}

, and

V_{T H N} = 1 V

. MOS transistors

M_{2}

and

M_{3}

are identical and have the following parameters:

K_{p} = 1 {m A V}^{- 2}

, and

V_{T H P} = - 1 V

. Fig. Q6 (a) Perform the DC analysis of the amplifier circuit shown in Fig. Q6, and show that the DC gate voltage of

M_{l}

5 V

. You need to explain briefly your answer. (b) Calculate the value of

R_{S}

such that the drain current of

M_{I}

4 m A

. Verify that the

M_{l}

is operating in the saturation region.

[Ans: R_{s} = 0.5 k Ω]

g_{m}

and

r_{o}

, of the small-signal model of the transistor

M_{l}

[Ans: g_{m, M 1} = 4 {m A V}^{- 1}, and r_{o, M 1} = \infty]

(d) What is the configuration of this amplifier? (e) Calculate the values of

R_{in}

, and

R_{out}

[Ans: R_{in} = 5 k Ω and R_{out} = 2 k Ω]

(f) Estimate the voltage gain,

A_{v} (= v_{out} / v_{in})

[

Ans:

A_{V} = - 1.78]

Detailed Answer

0 0

Ask Your Doubt Rate This Answer Request Video Solution

Previous question

Next question

Submit Questions

Search questions

Subject:

Answer Type:

Question

Image text

Detailed Answer

Problem is not yet solved!

Join Doubtrix with 7-days free trial

Similar/Related Questions