The AD795 is a low noise, precision, FET input operational amplifier. It offers both the low voltage noise and low offset drift of a bipolar input op amp and the very low bias current of a FET-input device. The 1014 common-mode impedance insures that input bias current is essentially independent of common-mode voltage and supply voltage variations. The AD795 has both excellent dc performance and a guaranteed and tested maximum input voltage noise. It features 1 pA maximum input bias current and 250 V maximum offset voltage, along with low supply current of 1.5 mA max.