I really just want a simple to understand circuit for conrtolling a laser diode (OPV300)...
The thing is, I would like it to be as less integrated as possible, I mean, complete 1 voltage regultator 1 set resistor setups totally work but I would like to modulate the brightness fairly quick, and there is I2C digital potentiometers but are not nearly as fast.
So, that is why I was going for the current reference, set resistor, transistor and all components separately, for simplicity I thought of a MOSFET at the output since for me, givenis much more easy to produce a varying voltage to modulate brightness.
How fast? Maybe 400KHz tops or so.
At this point i am not really sure how to proceed.