The DIO20182 is a dual channel rail-to-rail CMOS input/output operational amplifier with 1 pA ultra-low input bias current, it is ideal for wearable such as smart watch, portable medical and any ultra-low power signal amplification, which is very sensitive to the current load. The DIO20182 consumes 380 nA per channel ultra-low quiescent current, which makes DIO20182 suitable for battery-powered or portable equipment. The DIO20182 simplify circuit design with enhanced features such as unity-gain stability, 1.4 V to 5.5 V wide operating supply voltage range and ±3.5 mV low offset voltage. -40°C to 125°C wide operating temperature range enable the DIO20182 to be used in the harshest environment applications.