# Buffered feedback circuit analysis

I saw this circuit while going through some circuits and have been trying to solve it since. I get confused at multiple points while solving for the current.

1. Since there is a buffer for feedback, does that mean that there is no current going from the Vout+ to this branch?
2. Going by a technical datasheet , as seen here, I tried solving for Vout+ and Vout-. However the datasheet suggests that Beta1 or Beta2 is 0 when there is no feedback. When resistance is 0, doesn't mean that the feedback is essentially shorted and not open?
3. I have solved for V (which I guess was pretty easy) but I don't know how to proceed further. V = Vin- (1 + R2/R1) - R2/R1 Vin+ Can someone help?

Btw, this was not a homework assignment. I am just really bad at analyzing analog circuits :|

• If the buffer is assumed to be an ideal op-amp, then there would indeed be zero current consumed by both inputs. – Roger Rowland Apr 11 '15 at 8:17
• Great. That's actually where the problem starts for me. Ideally, assuming no current is being fed back to the input, how can I solve the circuit? – Mathews_M_J Apr 11 '15 at 14:30