I am designing charge amplifier and I'm trying to figure out what is the highest possible amplification i can get, because I'm working with microvolts. Are there any boundaries? The only one i can think of is that GBW of amplifier can provide that amplification. Also, are there any boundaries with choosing feedback resistor? What i found was that at lowest frequency of interest it must be bigger than impedance of feedback capacitor. And the last question is how can I simulate the effect of input resistance of an amplifier on charge amplification? Couldn't find anything else than fact that it's better with high input resistance amps like cmos or jfet.

As you can see I'm having trouble with finding good handbook on this problem. If you have some you can recommend it would be great, I was using Piezoelectric Accelerometers and Vibration Preamplifiers (theory and application handbook) although I'm working with hydrophone. Thank you!