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AD8684:  Quad Low Power, High Speed JFET Operational Amplifiers

Product Details

Product Status:Recommended for New Designs

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.

Applications

  • Portable telecommunications
  • Low power industrial and instrumentation
  • Loop filters
  • Active and precision filters
  • Integrators
  • Strain gauge amplifiers
  • Portable medical instrumentation
  • Supply current monitoring

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

Pin Configuration Diagram for AD8684

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

AD8684 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8684ARUZ Status: Production 14 ld TSSOP 14 Ind Tube, 96 $2.99 $2.44 Y  Material Info PCN Purchase
AD8684ARUZ-REEL Status: Production 14 ld TSSOP 14 Ind Reel, 2500 - $2.44 Y  Material Info PCN Purchase
AD8684ARZ Status: Production 14 ld SOIC 14 Ind Tube, 56 $2.99 $2.44 Y  Material Info PCN Purchase
AD8684ARZ-REEL Status: Production 14 ld SOIC 14 Ind Reel, 2500 - $2.44 Y  Material Info PCN Purchase
AD8684ARZ-REEL7 Status: Production 14 ld SOIC 14 Ind Reel, 1000 - $2.44 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

EVAL-OPAMP-4 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-PRAOPAMP-4RUZ Status: Production QUAD 14-Lead TSSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-4RZ Status: Production QUAD R-14 lead SOIC Evaluation Board $20.19 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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