The cascode is a two-stage amplifier that consists of a common-emitter stage feeding into a common-base stage. ... In modern circuits, the cascode is often constructed from two transistors (BJTs or FETs), with one operating as a common emitter or common source and the other as a common base or common gate.

What is a cascode amplifier in BJT?

The cascode amplifier is the two stage amplifier in which common emitter stage is connected to common base stage. The CE-CB cascode connection is as shown in the figure: The input signal is applied at Q1 i.e at common emitter stage and output is obtained at Q2.

What is cascode and cascade amplifier?

The difference between cascade and cascode amplifiers is that in cascade amplifiers the transistors are connected in series. Whereas in cascode amplifier transistors are connected in parallel. ... While in a cascode amplifier, the transistor is placed one above the other.