Hi,
I am trying to run a simulation which is of a circuit found in
The circuit is found in figure A-3
However when I try and run the simulation it is incredibly slow to the point of being unusable. Is there anyway to speed up the simulation time? Do I have my simulation settings wrong potentially?
I am stimulating the circuit with a 1khz 5v pk-pk signal. My simulation settings are
Time domain(Transient): 1000ns
Maximum step size 10ns
everything else as default.
Thanks so much.
Hi Gray,
However when I try and run the simulation it is incredibly slow to the point of being unusable. Is there anyway to speed up the simulation time? Do I have my simulation settings wrong potentially?
Enclosed is the simulation in Tina. Please change the variable one at a time and try to avoid the possible convergence issues.
Figure A-3 3X-462 10302023.TSC
I loaded the latest spice model and updated the previous schematic. It seems to be working well.
https://www.ti.com/product/OPA462#design-development
If you have other questions, please let us know.
Best,
Raymond
Hi Gray,
a TI part that can used to generate the +-180v rails used in this design?
We do not have a power amplifier that can swing at ±180Vpk currently (in a single high voltage power amplifier IC).
You may check with APEX product or modify and scale up Figure 6 of the following application note to meet the voltage swing (build a discrete high voltage op amp). Our OPA828 and other precision op amps may be used to replace LF357 as the analog input stage.
If the load can be configured in a floating manner, there may be a way to achieve the voltage swing with OPA462s (driving a floating load differentially).
I am going to close this inquiry. If you have additional questions, please let us know.
Best,
Raymond
