AD8684 Quad Low Power, High Speed JFET Operational Amplifiers

Applications

The AD8682 and AD8684 are dual and quad low power, precision (1 mV) JFET amplifiers featuring excellent speed at low supply currents. The slew rate is typically 9 V/μs with a supply current under 250 μA per amplifier. These unity-gain stable amplifiers have a typical gain bandwidth of 3.5 MHz. The JFET input stage ensures bias current is typically a few picoamps and below 125 pA maximum over the full temperature operating range.

The devices are ideal for portable, low power applications, especially with high source impedance. The devices are unity gain stable and can drive higher capacity loads (G = 1, noninverting), as an example of their excellent dynamic response over a wide range of conditions, delivering dc precision performance at low quiescent currents.

Features and Benefits
  • Low supply current: 250 μA/amp maximum
  • High slew rate: 9 V/μs
  • Bandwidth: 3.5 MHz typical
  • Low offset voltage: 1 mV maximum @ 25°C
  • Low input bias current: 20 pA maximum @ 25°C
  • CMRR: 90 dB typical
  • Fast settling time
  • Unity gain stable
  • Amplifiers
    Data Sheets
    Documentnote
    AD8682/AD8684: Dual/Quad Low Power, High Speed JFET Operational Amplifiers Data Sheet (Rev. B)PDF 364 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD8684ARUZ Production14 ld TSSOPOTH 96-40 to 85C2.992.44Y
    AD8684ARUZ-REEL Production14 ld TSSOPREEL 2500-40 to 85C02.44Y
    AD8684ARZ Production14 ld SOICOTH 56-40 to 85C2.992.44Y
    AD8684ARZ-REEL Production14 ld SOICREEL 2500-40 to 85C02.44Y
    AD8684ARZ-REEL7 Production14 ld SOICREEL 1000-40 to 85C02.44Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    EVAL-PRAOPAMP-4RUZQUAD 14-Lead TSSOP Evaluation Board20.19Y
    EVAL-PRAOPAMP-4RZQUAD R-14 lead SOIC Evaluation Board20.19Y
    AD8682/AD8684: Dual/Quad Low Power, High Speed JFET Operational Amplifiers Data Sheet (Rev. B) ad8682