State advantage disadvantage and application of FET?

Question

Answer

Advantages of FET

High Input Impedance: FETs have high input impedance, which minimizes the loading effect on preceding circuits, making them ideal for applications in amplifiers and buffers.
Low Power Consumption: The current flow in FETs is mainly through the channel; therefore, they consume less power compared to bipolar transistors.
Temperature Stability: FETs exhibit better thermal stability, making them less susceptible to thermal runaway, which is a common issue in BJTs.
Noise Immunity: FETs generally produce lower noise, which is beneficial in high-frequency applications and sensitive signal processing.

Disadvantages of FET

Cost: FETs are often more expensive than BJTs, which can limit their use in cost-sensitive applications.
Limited Gain: FETs typically have lower voltage gain compared to BJTs, which may restrict their application in certain amplification scenarios.
Biasing Complexity: FETs require careful biasing, especially for enhancement-mode devices, which can complicate circuit design.

Applications of FET

Amplifiers: Used in audio and radio frequency amplifiers due to their high input impedance and low noise.
Switching Devices: Employed in digital circuits as switches, particularly in CMOS technology, for logic gates and memory devices.
Voltage Followers: Used in buffer circuits where isolation between stages is required, maintaining signal integrity.
Analog Signal Processing: Utilized in analog signal processing applications due to their linear characteristics.