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LTspice simulation for sensors

Other Parts Discussed in Thread: OPT3004, OPT301

Hi all,

I ask the question in this forum because I know you can help me find a solution to my problem.

That's my problem: I try to simulate the operation of a phototransistor but I don't get what I want to have. This is the test scheme and the simulation result.

The first graph below is the result I got (in green the input signal and in blue the exit signal) and the second graph is the result I want to get (in green the input signal and in red the output signal).

If someone understands where the problem comes from and offers me solutions, I am a note-eater.

Best regards,

Sidya