
Concept explainers
(a)
The design for class AB enhancement mode MOSFET.
(a)

Answer to Problem 8.45P
The design for class AB enhancement mode MOSFET is shown in Figure 2.
Explanation of Solution
Calculation:
The given diagram is shown in Figure 1
The diagram for the class AB output stage using the enhancement mode MOSFETs is with resistance
The required diagram is shown in Figure 2
Conclusion:
Therefore, the design for class AB enhancement mode MOSFET is shown in Figure 2.
(b)
The value of
(b)

Answer to Problem 8.45P
The value of the resistance
Explanation of Solution
Calculation:
The expression to determine the value of the resistance
Substitute
The expression for the value of the resistance is given by,
Substitute
Conclusion:
Therefore, the value of the resistance
(c)
The value of the current in
(c)

Answer to Problem 8.45P
The value of the current
Explanation of Solution
Calculation:
The expression to determine the value of the gate to source voltage is given by,
Substitute
The expression for the gate to source voltage for
Substitute
The expression for the drain current for transitory
Substitute
The expression for the value of the drain current of transistor
Substitute
Conclusion:
Therefore, the value of the current
(c)
The current in each of the transistor, the value of the input voltage
(c)

Answer to Problem 8.45P
The value of the drain current
Explanation of Solution
Calculation:
The expression for the current through
The expression for the current through
Substitute
The conversion from
The conversion from
The expression for the value of the gate to source voltage for
Substitute
Apply KVL in at the output terminals.
Substitute
The expression for the value of the gate to source voltage for
Substitute
The expression to determine the value of the input voltage is given by,
Substitute
Apply KVL at the input terminals.
Substitute
The expression to determine the value of the drain current for
Substitute
The expression for the power delivered to the load is given by,
Substitute
Conclusion:
Therefore, the value of the drain current
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Chapter 8 Solutions
Microelectronics: Circuit Analysis and Design
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