ADA4177 Operational Amplifiers Analog Devices ADA4177 Operational Amplifiers offer a low offset voltage & drift, low input bias current, low noise, and low supply current. With capacitive loads of more than 1000pF, outputs are stable with no external compensation. Setting a new standard in precision amplifier robustness, the inputs of the ADA4177 provide input protection against signal excursions 32V beyond either supply, as well as 70dB of rejection for electromagnetic interference (EMI) at 1000MHz.