Hello,
I have customer that are trying to simulate THD on OPA1632. The numbers seems to be to good to be correct.
They have tried TI and PSpice (Cadence).
Can you confirm that THD is included in the mode?
If not is it possible to add that in a way?
Many thanks
Jorgen
Hello Jorgen,
We don't usually include THD performance for our amplifier models.
The netlist will list the features included in the model:
Unfortunately, the OPA1632 isn't optimized to accurately model THD. Also, THD results are affected by both the model and simulation initialization. The customer might be obtaining better THD performance if they are limiting maximum time step.
These threads go into a lot of detail on how to accurately set up the simulation to obtain a representation of THD for our model compared to the datasheet. This can be helpful to compare the THD of the bench configuration of the OPA1632 to the THD of the same configuration, but in simulation. Then comparing how external components can change the THD of the overall circuit.
Thank you,
Sima
