Fet operational amplifiers national semiconductor lf412cnnopb jfet operational amplifier low offset low drift jfet type dual amplifiers 4mhz bandwidth 15vus slew rate 1mv input offset voltage 200vmv gain jfet input 100db cmrr 18v supply voltage 0 to 70c 8 dip case internally trimmed offset voltage input offset voltage drift low input bias current low input noise current wide gain bandwidth high slew rate low supply current high input impedance suitable for applicatio