The ADA4505-2 is a dual micropower amplifier featuring rail- to-rail input and output swings while operating from a 1.8 V to 5 V single or from ±0.9 V to ±2.5 V dual power supply. Employing a new circuit technology, this low cost amplifier offers zero input crossover distortion (excellent PSRR and CMRR performance) and very low bias current, while operating with a supply current of less than 10 μA per amplifier. This combination of features makes the ADA4505-2 amplifier an ideal choice for battery-powered applications because it minimizes errors due to power supply voltage variations over the lifetime of the battery, and maintains high CMRR even for a rail-to-rail op amp.