The operational amplifier is arguably the most useful single device in analog electronic circuitry. When you apply them in the circuits, you must know their basics and functions. As for the function ...
The RE46C311 is a low-input leakage, rail-to-rail input/output operational amplifier (op amp). This device features very low input bias current of 6 pA at 60ºC, low operating current typically at 600 ...