I'm trying to replicate a Silicon Photomultiplier array multiplexing scheme by SensL. The link to their application note is found here:
According to the datasheet of their MicroFJ-60035-TSV silicon photomultiplier, the fast output signal is 150 mV, so some amplification is necessary. In their paper, they used a set of Minicircuits amplifiers in order to amplify the multiplexed output signal, the MiniCircuits ZX60-43 and ZFL-1000LN+ external amplifiers. They were connected in series in order to provide a larger gain of ~200. Links to the datasheet are below:
I never worked with external amplifiers such as these before, and I'm looking for a way to swap them out for smaller IC amplifiers that can be put on the same board as the SiPM array. Going from larger amplifiers such as these to ICs, how are they different, and how can I choose the best IC (or pair of ICs) to provide the same gain? Why are external amplifiers such as these used in the first place rather than ICs? Also, given how they're both broadband amplifiers, how would they be put in series? It feels that the amplifier order matters, but I'm not sure how.