Why We Use Cascode Amplifier?

The cascode amplifier is used to enhance the performance of an analog circuit. The utilization of cascode is a common method which can be used in the applications of transistors as well as vacuum tubes.

Why cascode amplifiers are used?

The cascode amplifier, with its variations, is a key element in the circuit designer's tool kit of useful circuits. It has advantages for increasing bandwidth and for high-voltage amplifier applications. ... A cascode amplifier has a high gain, moderately high input impedance, a high output impedance, and a high bandwidth.

What are the features of cascode amplifier?

A cascode amplifier consists of a common-emitter stage loaded by the emitter of a common-base stage. A cascode amplifier has a high gain, moderately high input impedance, a high output impedance, and a high bandwidth.