Firstly refer to the attached pic.
In the top layout there are the usual resistors to set in the photo diodes input current. However if I have lots of these inputs, I have to have lots of resistors. Currently my design has about 64 of these resistors I will have to solder.
However! If I know the forward drop of the photo diode is 1.2v, and I know my input is 5V, can I just put a Zener Diode of say 3.9V and run all the lines to this zener, thus saving lots of components?
Any reason why it should not work? Long term robustness?
Thanks for any insights.