The DIO20321SO8 from Dioo Microcircuits is a Power Operational Amplifier with Supply Voltage 2.5 to 5.5 V, Input Offset Voltage ±3.5 mV, Input Bias Current 1 to 10 pA, Quiescent Current 350 uA, Input Offset Current 1 to 10 pA. Tags: Surface Mount, General Purpose Op Amp. More details for DIO20321SO8 can be seen below.