The OP77 significantly advances the state-of-the-art in precision op amps. The outstanding gain of 10,000,000 or more for the OP77 is maintained over the full 10 V output range. This exceptional gain-linearity eliminates uncorrectable system nonlinearities common in previous monolithic op-amps and provides superior performance in high closed-loop gain applications. Low initial V/OS drift and rapid stabilization time, combined with only 50 mW of power consumption, are significant improvements over previous designs. These characteristics, plus the exceptional TCV/OS of 0.3 μV/°C maximum and the low V/OS of 25 μV maximum, eliminate the need for V/OS adjustment and increase system accuracy over temperature.