When I simulate an analog circuit using LTspice I get jagged sinewaves. What’s going on?
In LTspice, as in most other simulators nowadays, the maximum step size used
in the .tran statement can have little effect on the simulation, see comment 5 on
page 29. To minimize the amount of data stored the data may be compressed.
This leads to the jagged plots in LTspice simulations. To remove compression
add the SPICE directive .options plotwinsize=0 to the LTspice schematic.