The NCS2002 is an industry first sub−one volt operational amplifier that features a rail−to−rail common mode input voltage range, along with rail−to−rail output drive capability. This amplifier is guaranteed to be fully operational down to 0.9 V, providing an ideal solution for powering applications from a single cell Nickel Cadmium (NiCd) or Nickel Metal Hydride (NiMH) battery. Additional features include no output phase reversal with overdriven inputs, trimmed input offset voltage of 0.5 mV, extremely low input bias current of 40 pA, and a unity gain bandwidth of 1.1 MHz at 5.0 V. The NCS2002 also has an active high enable pin that allows external shutdown of the device. In the standby mode, the supply current is typically 1.9 μA at 1.0 V. Because of its small size and enable feature, this amplifier represents the ideal solution for small portable electronic applications.