Differential Amplifier Circuit Using Mosfet. This circuit operates on the principle of multi stage power amplification consisting of pre amplifiers drivers and power amplification using mosfet. 2 2 2 using this equivalent circuit the one sided output voltage at v 2 is 1 73 then the differential voltage gain is 11 74 6 3 ac equivalent circuit cont figure 11 22.
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In this research an nmos transistor differential amplifier. Capacitors c3 c4 c5 must be rated 50v and c2 can be 10v. I m really confused with this excercise my problem is to calculate the a v v out vd and the cutting high frequency fh neglecting the parasites capacitors of the transistors there is only c1 i am confused because with the small signal circuit i can t calculate the amplification of the.
Vid vi1 vi2 common input.
Use 30v dc for powering the circuit. In the next article we ll look at the improved performance that can be achieved by using an active load instead of drain resistors. The pre amplification is done using a differential amplifier driver stage is the differential amplifier with current mirror load and power amplification is done using mosfet class ab operation. Do not expect much performance from this amplifier.
