Question:
What is the main advantage of a JFET-cascade amplifier?
What is the main advantage of a JFET-cascade amplifier?
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Cascade configurations boost gain by stacking amplifier stages — especially helpful in low-signal analog applications.
Updated On: Jun 24, 2025
- High voltage gain
- Low output impedance
- Very low input capacitance
- High input impedance
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The Correct Option is A
Solution and Explanation
A JFET-cascade amplifier configuration combines the benefits of a common-source and common-gate stage.
This configuration significantly improves the overall voltage gain of the amplifier.
The cascade setup reduces the Miller effect (multiplication of input capacitance due to gain), which enhances the bandwidth while maintaining high gain.
Thus, the primary advantage of using a JFET-cascade amplifier is its high voltage gain, making it ideal for applications that require amplification of weak signals.
This configuration significantly improves the overall voltage gain of the amplifier.
The cascade setup reduces the Miller effect (multiplication of input capacitance due to gain), which enhances the bandwidth while maintaining high gain.
Thus, the primary advantage of using a JFET-cascade amplifier is its high voltage gain, making it ideal for applications that require amplification of weak signals.
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