The Microchip Technology Inc. MCP6401/1R/1U/2/4/6/7/9 family of operational amplifiers (op amps) has low quiescent current (45 µA, typical) and rail-to-rail input and output operation. This family is unity gain stable and has a gain bandwidth product of 1 MHz (typical). These devices operate with a power supply voltage of 1.8V to 6.0V. These features make the family of op amps well suited for single-supply, battery-powered applications.