The AD8502/AD8504 are low power, precision CMOS operationalamplifiers featuring a maximum supply current of 1 μA peramplifier. The AD8502/AD8504 have a maximum offset voltageof 3 mV and a typical input bias current of 1 pA operating rail-to-rail on both the input and output. The AD8502/AD8504 canoperate from a single-supply voltage of +1.8 V to +5.5 V or a dual-supply voltage of ±0.9 V to ±2.75 V.