The OPA827 series of JFET operational amplifiers combines outstanding dc precision with excellent ac performance. It offers 100V of offset, very low drift (1V/C) over temperature, low bias currents, and very low flicker noise of 400nVPP (0.1Hz to 10Hz). It operates over a very wide supply voltage range of 4V to 18V on a low 4.5mA supply current. A dual version is also available for the OPA827 family. Excellent ac characteristics, such as 18MHz gain bandwidth (GBW) and 22V/s slew rate, and precision dc characteristics make the OPA827 series well-suited for a wide range of applications such as 16to