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onsider the B My logic circuit shown below. Which of the logic expression is correct +VDD M₂ M₁ Vout= A + B Vout= AB Vout= A + B Vout= AB -O Vout

onsider the B My logic circuit shown below. Which of the logic expression is correct +VDD M₂ M₁ Vout= A + B Vout= AB Vout= A + B Vout= AB -O Vout

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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### CMOS Logic Circuit Analysis Consider the CMOS logic circuit shown below. Which of the logic expressions is correct? #### Circuit Diagram Description The circuit consists of four MOSFET transistors labeled \( M_1, M_2, M_3, \) and \( M_4 \). Here's a detailed explanation of the diagram: - **Transistors \( M_1 \) and \( M_2 \)** are PMOS transistors connected in a parallel configuration, with their sources connected to a positive voltage supply \( +V_{DD} \). - **Transistors \( M_3 \) and \( M_4 \)** are NMOS transistors connected in a series configuration, with their sources connected to the ground. - The gates of \( M_1 \) and \( M_3 \) are both controlled by input \( A \). - The gates of \( M_2 \) and \( M_4 \) are both controlled by input \( B \). - The output \( V_{out} \) is taken from the connection between the PMOS network and the NMOS network. #### Logical Expression Options 1. \( V_{out} = A + B \) 2. \( V_{out} = \overline{AB} \) 3. \( V_{out} = \overline{A + B} \) 4. \( V_{out} = AB \) The circuit implements a logical NOR operation because: - The PMOS transistors \( M_1 \) and \( M_2 \) are in parallel, turning on when their respective inputs are low, thereby pulling the output high. - The NMOS transistors \( M_3 \) and \( M_4 \) are in series, turning on only when both inputs are high, thereby pulling the output low. Therefore, the correct logic expression is: \[ V_{out} = \overline{A + B} \]
Transcribed Image Text:### CMOS Logic Circuit Analysis Consider the CMOS logic circuit shown below. Which of the logic expressions is correct? #### Circuit Diagram Description The circuit consists of four MOSFET transistors labeled \( M_1, M_2, M_3, \) and \( M_4 \). Here's a detailed explanation of the diagram: - **Transistors \( M_1 \) and \( M_2 \)** are PMOS transistors connected in a parallel configuration, with their sources connected to a positive voltage supply \( +V_{DD} \). - **Transistors \( M_3 \) and \( M_4 \)** are NMOS transistors connected in a series configuration, with their sources connected to the ground. - The gates of \( M_1 \) and \( M_3 \) are both controlled by input \( A \). - The gates of \( M_2 \) and \( M_4 \) are both controlled by input \( B \). - The output \( V_{out} \) is taken from the connection between the PMOS network and the NMOS network. #### Logical Expression Options 1. \( V_{out} = A + B \) 2. \( V_{out} = \overline{AB} \) 3. \( V_{out} = \overline{A + B} \) 4. \( V_{out} = AB \) The circuit implements a logical NOR operation because: - The PMOS transistors \( M_1 \) and \( M_2 \) are in parallel, turning on when their respective inputs are low, thereby pulling the output high. - The NMOS transistors \( M_3 \) and \( M_4 \) are in series, turning on only when both inputs are high, thereby pulling the output low. Therefore, the correct logic expression is: \[ V_{out} = \overline{A + B} \]
The image presents a circuit schematic, specifically a source follower configuration, along with a multiple-choice question. The circuit includes several components: - **Resistors:** \( R \), \( R_1 \), \( R_2 \), \( R_S \), \( R_L \) - **Capacitors:** \( C_1 \), \( C_2 \) - **Voltage Source:** Denoted as \( +V_{\text{DD}} \) - **Input Signal:** Labeled \( u(t) \) leading to \( v_{\text{in}}(t) \) - **Output Signal:** Labeled \( v_o \) The circuit shows a common source follower configuration with biasing resistors and capacitors for coupling and bypass. The question asks: "Consider the source follower circuit shown below. Which of the following statement is NOT true?" Options: - ( ) The voltage gain is slightly less than 1. - ( ) The input impedance is large. - ( ) The output impedance is small. - ( ) The power gain is slightly less than 1.
Transcribed Image Text:The image presents a circuit schematic, specifically a source follower configuration, along with a multiple-choice question. The circuit includes several components: - **Resistors:** \( R \), \( R_1 \), \( R_2 \), \( R_S \), \( R_L \) - **Capacitors:** \( C_1 \), \( C_2 \) - **Voltage Source:** Denoted as \( +V_{\text{DD}} \) - **Input Signal:** Labeled \( u(t) \) leading to \( v_{\text{in}}(t) \) - **Output Signal:** Labeled \( v_o \) The circuit shows a common source follower configuration with biasing resistors and capacitors for coupling and bypass. The question asks: "Consider the source follower circuit shown below. Which of the following statement is NOT true?" Options: - ( ) The voltage gain is slightly less than 1. - ( ) The input impedance is large. - ( ) The output impedance is small. - ( ) The power gain is slightly less than 1.
Expert Solution
Step 1: Solution:

1. For given CMOS circuit identify thelogic gate.

Electrical Engineering homework question answer, step 1, image 1

  • When A=B=0: M1=M2=ON and M3=M4=OFF. Hence,

straight V subscript out equals straight V subscript DD bold V subscript bold out bold equals bold 1

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