searching for military grade operational amplifier around this specification "Low noise: 3 nV/√ Hz • Wide bandwidth:– OPA227: 8 MHz, 2.3 V/μs– OPA228: 33 MHz, 10 V/μs • Settling time: 5 μs • High CMRR: 138 dB • High open-loop gain: 160 dB • Low input bias current: 10 nA maximum • Low offset voltage: 75 µV maximum • Wide supply range: ±2.5 V to ±18 V • Single, dual, and quad versions"
