The MCP6S21-I/SN is a Single-Ended Rail-to-Rail Input/Output (RRIO) variable gain operational amplifier (Op Amp) designed for low-power applications. It offers a wide operating voltage range of 2.2V to 5.5V making it suitable for battery-powered devices and other low-voltage applications.This Op Amp features a variable gain setting allowing the user to adjust the amplification of the input signal. This versatility makes it ideal for a variety of applications where the signal levels may vary