Question
Download Solution PDFFor any inverting amplifier, the input capacitance due to Miller effect
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 'option 1'
Concept:
The Miller effect refers to the increase in equivalent capacitance that occurs when a capacitor is connected from the input to the output of an amplifier with a large negative gain.
The virtually increased input capacitance due to the miller effect is given by the expression
\(C_M=C(1-A_v)\)
where, \(A_v \) is the voltage gain(\(V_o\over V_i\)) of the inverting amplifier and C is the feedback capacitance.
\(A_v\) is negative for inverting amplifier, the capacitance expression becomes
\(C_M=C(1+A_v)\)
Thus, the input capacitance increases.
Last updated on Mar 26, 2025
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