The AD8642ARZ-REEL is a dual low power bias, R-R JFET amplifier manufactured by Analog Devices. It is a precision device designed for operation with single-ended input signals and is used in applications demanding highest accuracy. It also has an internal amplifier with a 2.4 dB gain and low input noise at 0.8nV/vHz. The low input bias current of 2.4nA ensures optimum AC performance, while the high-impedance input impedance allows direct connection to low impedance sensors. The amplifier also features wide common mode range, low offset voltage, low supply current, fast settling time, and low power consumption. The AD8642ARZ-REEL is suitable for use in a variety of high accuracy applications like test and measurement equipment, medical instrumentation, and industrial process control.