I need some algebra help with the fully differential amplifier circuit attached. I have attached two PDF's both using superposition but using different variables. I am trying to get the solution in the form of Vin*A=Vout where Vin and Vout are differential.
I am confident that my math is correct up until I can no longer simplify the expression to Vin*A=Vout.
If the input resistors were equal (same variable, R1) and the feedback resistors were equal (same variable, R2) I can easily derive the transfer function. But the goal is to derive the transfer function when the resistors are not equal (R1, R2, R3, R4) and this is proving to be very cumbersome in the math!
Can anyone help me with this?
I am confident that my math is correct up until I can no longer simplify the expression to Vin*A=Vout.
If the input resistors were equal (same variable, R1) and the feedback resistors were equal (same variable, R2) I can easily derive the transfer function. But the goal is to derive the transfer function when the resistors are not equal (R1, R2, R3, R4) and this is proving to be very cumbersome in the math!
Can anyone help me with this?
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