NJU7700x Operational Amplifiers Nisshinbo NJU7700x Operational Amplifiers include the NJU77000/NJU77001/NJU77002/NJU77004 single/dual/quad, ultra-low power, CMOS op amps designed to extend battery life and performance for portable applications. The NJU7700x features a 1.5V to 5.5V supply voltage range and a 0.29µA typ. (single), 0.23µA/ch typ. (dual/quad) supply current. The supply current is stable against ambient temperature and voltage change, making them ideal for micropower oxygen sensors, gas sensors, and remote sensor applications.