Chapter: Electronic Circuits : JFET and MOSFET Amplifiers
Common Gate Amplifier
In this circuit, input is applied between source and gate and output is taken between drain and gate.
Common Gate Amplifier
In this
circuit, input is applied between source and gate and output is taken between
drain and gate.
In CG
Configuration, gate potential is at constant potential. so, increase in input
voltage Vi in positive direction increase the negative gate source voltage. Due
to ID reduces, reduces, reducing the drop IDRD.
Since VD= VDD-IDRD, the reduction
in ID results in an increase in output voltage.
1. Input
Impedance (Zi)
After substituting and simplification,
2. Output Impedance Zo
3. Voltage gain (Av)
Table summarizes the performance of common gate amplifier
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Electronic Circuits : JFET and MOSFET Amplifiers : Common Gate Amplifier |
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Electronic Circuits : JFET and MOSFET Amplifiers