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Chapter 10: Amplifiers Frequency Response

Chapter 10: Amplifiers Frequency Response

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Cin(Miller) formula shows that Cbc (or Cgd) has a much greater impact on input capacitance than its actual value. For example, if Cbc 6 pF and the amplifier gain is 50, then Cin(Miller) = C(Av+1) = 306 pF. Cout(Miller) indicates that if the voltage gain is 10 or greater ÆCout(Miller) ≈Cbc or Cgd because (Av+1) /Av ≈1

  Miller

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