The NCS21871SQ3T2G is a Precision Amplifiers PRECISION OP-AMP manufactured by ON Semiconductor. It is a low-power, single-channel, rail-to-rail input and output, low-noise operational amplifier. It is designed to improve power consumption and reduce input bias current while still providing precision performance with rail-to-rail outputs suitable for many applications. It features a gain bandwidth product of 10MHz, low-noise of 2.5 nV/sqrt Hz, input offset voltage of 2mV, and supply current of 1.8 mA. Input common mode range includes both rails, and its output stage can drive up to 5 mA loads. It is suitable for many signal-related processing applications.