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addition of cascode stage in an amplifier

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KostasA

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Adding a cascode stage in an amplifier increasing the output impedance. What the advantage of this?
 

KostasA said:
Adding a cascode stage in an amplifier increasing the output impedance. What the advantage of this?
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The main benefit of a cascade amplifier is better high frequency performance because the "Miller Effect" is eliminated. The increased output impedance might be a problem, not an advantage.
 

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