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Lecture 1 Cascode 7.2 The Basic Gain Cell 7.3 The Cascode Amplifier

Lecture 1 Cascode 7.2 The Basic Gain Cell 7.3 The Cascode Amplifier

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Lecture 1Cascode

7.2 The Basic Gain Cell7.3 The Cascode Amplifier

Common Source (CS) Amplifier

A CS amplifier with a current source load

Practical Implementation of the CS amplifier

Increased Voltage Gain

A 2-step process (Norton Equivalent Circuit)1. Determine the short circuit output current2. Determine the output resistance

Determine Output Current

Determining the Output Resistance of a Cascode Amplifier

PMOS implementation of a cascode

Use PMOS cascode as a load

Double Cascodeing

A Folded Cascode

Bipolar Junction Transistor

A Common Emitter (CE) Amplifier

A BJT Cascode Amplifier

Determining the output resistance of the BJT Cascode Amplifier

Comparisons

BiCMOS Cascode