OPA27GP is an operational amplifier (op amp) manufactured by Texas Instruments. It is a single-channel, high-performance, low-noise amplifier with a power supply voltage range of 2.7V to 5.5V, making it ideal for use in low voltage and battery powered applications such as cell phones and other portable devices. OPA27GP offers a wide gain bandwidth of typically 1.5MHz, very-low offset voltage of 1.5mV maximum, low input bias current of 2500pA max, and low supply current of 7.5mA max. It also features ESD protection on the input pins, making it suitable for use in applications requiring high reliability.