Hi there, thanks for your attention:
we are doing a calibration process for DLP5530 projector, and we found we can't reach the lower dimming level.
the following picture shows the relation between level setup in the DLPC controller vs actual nits on Konica CA-410.
As the red circle shows, under a low dimming level, the system stop working and no lights out.
so you can see the step in the red circle.
and we just tried two sets for TIA1 gain.
for higher TIA1 gain, we can't even finish a calibration process.
we have searched DS for TPS99000, and we follow the suggestion below to optimize our circuit.
but before we get the newer PCBA back, we want to get your suggestion
Did the capacitance the root cause of our problem?
Are there any ways for us to locate the cause or any direction we can try ?
