The mini-analog series is a group of ICs that incorporate a general purpose analog circuit in a small package. The S-89430A/89431A is a CMOS type operational amplifier that feature Rail-to-Rail*1 I/O and an internal phase compensation circuit, and that can be driven at a lower voltage with lower current consumption than existing bipolar operational amplifiers. These features make this product the ideal solution for small battery-powered portable equipment.