I am working on a photon spectrum analyzer (255 channels) project
I already have the PMT and OP-amps.
is there is any voltage comparator IC that can discriminate the different level of photon energy? (get the spectrum)
The best I can do is refer you to the http://ti.com main page. Under "Products", click on "Amplifiers & Linear". Then click on "Comparators". This will show you all of the comparators available from TI and National Semiconductor.
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