s4583-04_etc_kpsd1009e.pdf (597 KB)
Hi all,
I want to interface a position-sensitive detector with Sparkfun Pro Micro or SAMD21 breakout. One is 5V logic and the other is 3.3V logic. The PSD works in 15V. I’m new to this. I have attached the datasheet of the PSD. Can anyone share your suggestions for this?
Thanks in Advance!
You will need two transimpedance (photocurrent to voltage) amplifiers to measure the two currents with an ADC. It is best to use high quality, low offset, rail-to-rail operational amplifiers. A good general reference on photodiode amplifiers is http://edge.rit.edu/edge/P09051/public/ … lifers.pdf
The PSD works in 15V
Not required. I imagine you saw an example circuit that uses a reverse bias of 15V on the photodiode.