Consider the circuit shown below of a common source amplifier with a current mirror bias. Find thefollowing:a. Find kp and kn.b. Find the drain current of M2 given that IBIAS = 2mA and VouT = 2.5V.c. Find the gm and r. of transistor M1.d. Sketch the small signal model of transistor M3 (Hint: Is there any small signal in any terminal ofM3? If yes, then where is it? If no, then what happens to the small signal model?).It is given that the NMOS (M1) parameters are H,Con = 3mA/V? , VTH,n = 0.5V and A = 0.02 and the PMOS(M2 and M3) parameters are µ.Cox = 1mA/V? and VTH,p = -0.6V. The PMOS transistor M3 does not havechannel length modulation while PMOS transistor M2 has A = 0.02. It is also given that the dimensions ofM2 and M3 have equal widths of 5µm and lengths of L2 = 3µm and L3 = 1.5µm, respectively. M1 haslength of L1 = 1µm and width of W1 = 2µm.5V5VM3M2VOUTVINM1IBIAS

Consider the circuit shown below of a common source amplifier with a current mirror bias. Find the following: a. Find kp and kn. b. Find the drain current of M2 given that IBIAS = 2mA and Vout = 2.5V. c. Find the gm and ro of transistor M1.

Consider the circuit shown below of a common source amplifier with a current mirror bias. Find the following: a. Find kp and kn. b. Find the drain current of M2 given that IBIAS = 2mA and Vout = 2.5V. c. Find the gm and ro of transistor M1.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Multistage Amplifier

The multistage amplifier is generally a voltage or power amplifier. The multistage amplifier has a number of single stage amplifier that are cascaded together. Since a single stage amplifier output is not useful, they are being replaced with multistage amplifiers or multistage transistor amplifiers. The multistage amplifier are used where the gain required is high or the input signal is very small such that only a single stage amplifier cannot amplify it.

Question

Consider the circuit shown below of a common source amplifier with a current mirror bias. Find the
following:
a. Find kp and kn.
b. Find the drain current of M2 given that IBIAS = 2mA and VouT = 2.5V.
c. Find the gm and r. of transistor M1.
d. Sketch the small signal model of transistor M3 (Hint: Is there any small signal in any terminal of
M3? If yes, then where is it? If no, then what happens to the small signal model?).
It is given that the NMOS (M1) parameters are H,Con = 3mA/V? , VTH,n = 0.5V and A = 0.02 and the PMOS
(M2 and M3) parameters are µ.Cox = 1mA/V? and VTH,p = -0.6V. The PMOS transistor M3 does not have
channel length modulation while PMOS transistor M2 has A = 0.02. It is also given that the dimensions of
M2 and M3 have equal widths of 5µm and lengths of L2 = 3µm and L3 = 1.5µm, respectively. M1 has
length of L1 = 1µm and width of W1 = 2µm.
5V
5V
M3
M2
VOUT
VIN
M1
IBIAS

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