Push-Pull amplifier, getting input and output impedance.

Thread Starter

xavierx

Joined Jun 8, 2018
2
Hi, I am designing an amplifier and trying to get equations for Av, Rin, Rout, and BW. (Input would be out2 and output out3) I am confused on how to get them since the Q14, Q15, and Q16 make all together a topology I haven't solved before.
Could anyone one help me on how to solve it?
For the output impedance what I did and not sure if I am right is:
Rout: (re12||re13)+((ro10||ro11)||Rout2)/(Beta+1)
Where Rout is (ro8||ro9).

This is the only thing I have come out with after many hours of working on it.
output.png
circuito.png
 

Thread Starter

xavierx

Joined Jun 8, 2018
2
hi xavier,
Welcome to AAC.
Is this a Homework or College assignment.?
E
Hi, it was until I decided to change the output. I had to design it with Darlington configuration, but Now I want to try this option since I have read its more suitable for driving current loads. I may want to try amplifying some signals or audio after this.
 
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