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AD8641:  Low Power, Rail-to-Rail Output Precision Single JFET Op Amp

Product Details


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.

The AD8641/AD8642/AD8643 are suitable for applications utilizing multichannel boards that require low power to manage heat. Other applications include photodiodes, ATE reference level drivers, battery management, and industrial controls.

The AD8641/AD8642/AD8643 are fully specified over the extended industrial temperature range of –40°C to +125°C. The AD8641 is available in 5-lead SC70 and 8-lead SOIC lead-free packages. The AD8642 is available in 8-lead MSOP and 8-lead SOIC lead-free packages. The AD8643 is available in 14-lead SOIC and 16-lead, 3 mm × 3 mm, LFCSP lead-free packages.


Applications
  • Line-/battery-powered instruments
  • Photodiode amplifiers
  • Precision current sensing
  • Medical instrumentation
  • Industrial controls
  • Precision filters
  • Portable audio
  • ATE
  • FEATURES and BENEFITS

    • 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

    Pin Configuration Diagram for AD8641

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    AD8641 SPICE Macro-Model SPICE Models HTML

    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.

    Product Recommendations & Reference Designs

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    Price, packaging, availability

    AD8641 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8641AKSZ-R2 Status: Production 5 ld SC70 5 Ind Reel, 250 $2.66 $2.66 Y  Material Info Notify Me Purchase
    AD8641AKSZ-REEL Status: Last Time Buy 5 ld SC70 5 Ind Reel, 10000 - $1.47 Y  Material Info PCN/PDN Purchase
    AD8641AKSZ-REEL7 Status: Production 5 ld SC70 5 Ind Reel, 3000 - $1.47 Y  Material Info PCN Purchase Sample
    AD8641ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.83 $1.47 Y  Material Info PCN Purchase Sample
    AD8641ARZ-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $1.47 Y  Material Info PCN/PDN Purchase
    AD8641ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.47 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-1 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    EVAL-PRAOPAMP-1KSZ Status: Production Single KS-5 lead SC70 Evaluation Board $20.19 Yes -
    EVAL-PRAOPAMP-1RJZ Status: Production Single RJ-5 lead SOT23 Evaluation Board $20.19 Yes -
    EVAL-PRAOPAMP-1RMZ Status: Production Single RM-8 lead MSOP Evaluation Board $20.19 Yes -
    EVAL-PRAOPAMP-1RZ Status: Production Single R-8 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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