Hello Team,
Posting on behalf of my customer:
We are trying to replicate the conditions for the op-amp with a single 3.3V supply as detailed in section 6.6 of the datasheet but noticed the low frequency open loop gain was only 58 dB instead of the 78 dB listed in the specs. This also seemed to impact the linearity of the device as well since at input amplitudes <200 uV the waveform starts to get chopped. However, all this goes away when we apply and additional -1 V to the negative rail and 4.3 V to the positive rail.
Is this a physical effect that would be seen in reality or just a error with the Pspice model? Attached is a file of the TINA simulation. Note that a large capacitor and inductor was used to replicate a bias-T for setting the input V_CM.
Regards,
Renan
