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Ultra low power, clean 30V power supply + ultra low power high speed comparator?
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Spirit532:
CZT is an order of magnitude less sensitive and an order of magnitude more noisy, not to mention the rather painful prices, with not much benefit.
SiPMs with scints are the way to go at this point. Maybe in the future something will change.
Marco:
The openlabs project I linked earlier which used an inverter for amplification said they got a 200 mv out of their scintillator sipm combo. That would be enough for the comparator.
Marco:
The diode is not necessary with the ov-7604-c7, I thought it went high impedance when OE is low, but it actually pulls the clock output low according to the application manual.
Marco:

--- Quote from: Spirit532 on July 29, 2019, 03:09:14 am ---MIC860

--- End quote ---

BTW, I have no idea how accurate it is, but Spice says a BFP720ESD common emitter amplifier has a gain bandwidth product of 340 MHz at 30 uA bias current ...

I suspect it will be quite a bit higher than MIC860 even IRL. You don't really need the DC coupling or class AB push pull output of the MIC860 so a high ft low current RF transistor amplifier will almost certainly do better. A BFU710F might do a little better still, but the BFP720ESD is less fragile.
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