Hi
I would like to connect two INA819 amplifiers in series to achieve high bandwidth and high gain. Attached is the Tina simulation.
Side notes:
R3 and R5 put some load on the OpAmps. I thought at best this was necessary. But it doesn't seem to change anything.
The gain is set to about 28.7 for each OpAmp.
If there is no connection between the two INAs, everything works as expected. However, the series connection leads to distortions in the simulation. Is this just simulation artefacts or a problem? Solutions?
It seems the simulation is somewhat unstable anyway. If I add low-pass filters, I often get convergence errors.
Your help is much appreciated.
Thanks and best regards
PatrikINA819_Offset_v1.TSC
