Other Parts Discussed in Thread: OPA684
I have been doing some TINA spice simulations with both the OPA683 and OPA684.
The non-inverting input is connected to ground, and the inverting input is connected to a small signal input and has a gain of 40 (1K ohm feedback resistor, and a 25 ohm resister connected to small signal source).
Both the OPA683 and OPA684 list a typical input offset voltage at +/- 1.5 mV.
However performing a TINA spice simulation produces a -0.1mV input offset for the OPA684 and an 2.5mV input offset for the OPA683.
I am curious if this is just model differences / inaccuracies, or if there are actual difference in these two opamps which would result in these varying offsets for my circuit?