GENERAL DESCRIPTION
The AD8641/AD8642/AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at the output enables designers to buffer CMOS DACs, ASICs, and other wide output swing devices in single-supply systems. The outputs remain stable with capacitive loads of more than 500 pF.

FEATURES
    Low supply current: 250 µA max
    Very low input bias current: 1 pA max
    Low offset voltage: 750 µV max
    Single-supply operation: 5 V to 26 V
    Dual-supply operation: ±2.5 V to ±13 V
    Rail-to-rail output
    Unity-gain stable
    No phase reversal
    SC70 package

APPLICATIONS
    Line-/battery-powered instruments
    Photodiode amplifiers
    Precision current sensing
    Medical instrumentation
    Industrial controls
    Precision filters
    Portable audio
    ATE