The OP177GP is an operational amplifier (op-amp) manufactured by Analog Devices. It is a high-performance, low-power, single-supply CMOS amplifier with rail-to-rail output. It is specifically designed to improve signal-to-noise ratio and reduce power consumption in applications such as sensor interface, ADC buffering, and active filtering. It features a gain bandwidth product of 2.5MHz and an input voltage range of 0 to 3.5V. It also offers a slew rate of 2V/µs, an input bias current of 1nA, and an offset voltage of 150µV.