Answered: VDD Mp Oa 어 -Vss SS

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

The CMOS inverter in Fig. has V_DD = 2.5 V and V_SS = 0 V. If V_TN = 0.60 V and V_TP = −0.60 V, what are the regions of operation of the transistors for (a) V_I = V_L? (b) V_I = V_H ? (c) V_I = V_O = 1.25 V?

Expert Solution

Step 1

The CMOS inverter circuit is shown below:

(a) V_I = V_L

First, we will check for the NMOS, the calculation is shown below:

There is no current flowing across the NMOS, hence it is operating in the cut-off region.

Now, we will check for the PMOS, the calculation is shown below:

The PMOS is operating in the triode region.

Step 2

(b) V_I = V_H

First, we will check for the NMOS, the calculation is shown below:

The NMOS is operating in the triode region.

Now, we will check for the PMOS, the calculation is shown below:

There is no current flowing across the PMOS, hence it is operating in the cut-off region.

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P-channel Metal-Oxide Semiconductor (PMOS), N-channel Metal-Oxide Semiconductor (NMOS), and Complementary Metal-Oxide Semiconductor (CMOS)

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