OPAx182 High-Precision Operational Amplifiers Texas Instruments OPAx182 High-Precision Operational Amplifiers (Op Amps) are ultra-low noise, fast-settling, zero-drift devices providing rail-to-rail output operation. It features unique MUX-friendly architecture and a controlled startup system. These features and excellent ac performance, combined with only 0.45µV of offset voltage and 0.003 µV/°C of drift over temperature, make the Texas Instruments OPA2182 an excellent choice for data acquisition, battery test, analog input modules, weigh scales, and any other systems requiring high DC precision and low noise.