The OP777 , OP727 , and OP747 are precision single , dual, and quad rail-to-rail output single- supply amplifiers featuring micropower operation and rail-to-rail output ranges. These amplifier s provide improved performance over the industry -standard OP07 with ±15 V supplies , and offer the further advantage of true single -supply operation down to V , and smaller package options than any other high-voltage precision bipolar amplifier.