Single, Low Cost, Precision JFET Input Operational Amplifier

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Product Details

The ADA4000-1 / ADA4000-2 / ADA4000-4 are junction field effect transistor (JFET) input operational amplifiers featuring precision, very low bias current, and low power. Combining high input impedance, low input bias current, wide bandwidth, fast slew rate, and fast settling time, the ADA4000-1 / ADA4000-2 / ADA4000-4 are ideal amplifiers for driving analog-to-digital inputs and buffering digital-to-analog converter outputs. The input common-mode voltage includes the positive power supply, which makes the device an excellent choice for high-side signal conditioning.

Additional applications for the ADA4000-1 / ADA4000-2 / ADA4000-4 include electronic instruments, automated test equipment (ATE) amplification, buffering, integrator circuits, instrumentation-quality photodiode amplification, and fast precision filters (including phase-locked loop filters). The devices also include utility functions, such as reference buffering, level shifting, control input/output interface, power supply control, and monitoring functions.


  • Reference gain/buffers
  • Level shift/driving
  • Active filters
  • Power line monitoring/control
  • Current/voltage sense or monitoring
  • Data acquisition
  • Sample-and-hold circuits
  • Integrators

Product Lifecycle

icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits


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EVAL-OPAMP-1 Circuit Diagram

Product Details

The Universal Precision Op Amp Evaluation Boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs Compliant. See references below on what board to order by lead count and package.

  • EVAL-PRAOPAMP-1KSZ (Single 5-Lead SC70) KS-5
  • EVAL-PRAOPAMP-1RJZ (Single 5-Lead SOT 23) RJ-5
  • EVAL-PRAOPAMP-1RMZ (Single 8-Lead MSOP) RM-8
  • EVAL-PRAOPAMP-1RZ (Single 8-Lead SOIC) R-8

Tools & Simulations

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Design Tools

Design Resources

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

ADA4000-1 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints


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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.

Price Table Help

Evaluation Boards Pricing displayed is based on 1-piece.
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.