I'm building a project that needs gain of 1000 (from mV) and bandwidth of 500 kHz. Is there an op-amp (or other parts) with this characteristic? Or maybe it is available in only very expensive parts (like used in NASA or milspec) which has these features? If they are not made of op-amp and chip, what is it made of?
If none, is it more of limit of technology like Moore's limit (in which case, what is the highest gain and bandwidth in any parts available currently) or is it a fundamental limit like Dawes' Limit?