I want to have an array of photodiodes measuring the light output of a scintillator - which will probably be very low, around 420-430nm, but am slightly confused about what to do. I understand that I need some kind of high gain, possibly transimpendance, amplifier, however, I am unsure about multiplexing the signals. Can I put the photodiode signals through an analog multiplexer before the amplifier, or does there have to be an individual amplifier for each photodiode then the outputs from the amplifiers are multiplexed (or is there an even better way of multiplexing the photodiodes)
Thanks