I want to use an AD laser driver IC to control AC and DC current applied to the laser diode (VCSEL). All ICs I found are designed to control the cathode current of the laser diode.
The problem now is that I am working with an array of laser diodes, which has the cathodes of all the diodes wired to one pin, only the lasers anodes are individually addressable. I need to be able to control AC and DC currents for each individual laser!
Is there a way I can use, for example the ADN2871, to control the anode current of the laser by inverting the ouput current - or something similar?
Thanks and kind regards,