Hi Alex,
We use OPT3101 for distance detection. Because vcsel needs more current, an external driver chip is added, but the amplitude is very large. When the output current of the driver chip is 0mA, the amplitude is more than 4000. We are sure that it is caused by PCB crosstalk and improper schematic design. The next board is being prepared.
How should the ground and power supply of the external driver chip be designed and how to isolate it?
Please help us to check the schematic design and give some suggestions.
May I send you the schematic by email?
Kind regards,
kevin
