The NCV1009DR2G is a precision 2.5V voltage reference manufactured by ON Semiconductor. It is an integrated circuit (IC) designed to provide a precise voltage output from its input voltage. The device consists of a voltage reference, comparators, and an output amplifier that allows for both sinking and sourcing. It features low output noise, fast settling time, a low power consumption of 3 mA, a high common-mode rejection ratio (CMRR), and a temperature range of -40°C to +85°C. The NCV1009DR2G is ideal for use in applications such as audio, instrumentation circuits, and temperature or pressure sensors.