The DIO2381 is an ultra-low offset voltage (VOS) operational amplifiers, with rail-to-rail CMOS input/output and single/dual/quad channels selectable. The DIO2381 has a gain-bandwidth product of 450 kHz (typ.), wide operating supply voltage from 2.5 to 5.5 V, and broad output voltage swing. The DIO2381 consumes ultra-low power, with each channel 38 μA of bias current, which makes the DIO2381 ideal for battery-powered devices, temperature-sense devices, etc.