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AD8572:  Zero-Drift, Single-Supply, RRIO Dual Op Amp

Product Details


Newer Alternatives:
  • ADA4528-2 zero-drift, ultralow noise auto-zero dual amplifier

This family of amplifiers has ultralow offset, drift, and bias current. The AD8571, AD8572, and AD8574 are single, dual, and quad amplifiers, respectively, featuring rail-to-rail input and output swings. All are guaranteed to operate from 2.7 V to 5 V single supply.

The AD857x family provides benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. Using Analog Devices, Inc., topology, these zero-drift amplifiers combine low cost with high accuracy. (No external capacitors are required.) Using a patented spread-spectrum, auto-zero technique, the AD857x family eliminates the intermodulation effects from interaction of the chopping function with the signal frequency in ac applications.

With an offset voltage of only 1 μV and drift of 0.005 μV/°C, the AD857x family is perfectly suited for applications where error sources cannot be tolerated. Position and pressure sensors, medical equipment, and strain gage amplifiers benefit greatly from nearly zero drift over their operating temperature range. Many more systems require the rail-to-rail input and output swings provided by the AD857x family.

Applications

  • Temperature sensors
  • Pressure sensors
  • Precision current sensing
  • Strain gage amplifiers
  • Medical instrumentation
  • Thermocouple amplifiers
  • Data Sheet, Rev. D, 6/08

    FEATURES and BENEFITS

    • Low offset voltage: 1 μV
    • Input offset drift: 0.005 μV/°C
    • Rail-to-rail input and output swing
    • 5 V/2.7 V single-supply operation
    • High gain: 145 dB typical
    • CMRR: 140 dB typical
    • PSRR: 130 dB typical
    • See Data Sheet for Additional Information

    Pin Configuration Diagram for AD8572

    Similar Products

    • AD8628, AD8629 and AD8630 : available in single, dual and quad versions with higher speed and lower noise
    • ADA4528-1 and ADA4528-2: available in single and dual versions offering lower offset and drift, voltage noise, with higher bandwidth in a zero-drift precision Op Amp

    Documentation

    Title Content Type File Type
    AD8571/AD8572/AD8574: Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifiers Data Sheet  (Rev E, 03/2011) (pdf, 513 kB) Data Sheets PDF
    AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
    AN-214: Ground Rules for High Speed Circuits  (pdf, 356 kB)
    Layout and Wiring Are Critical in Video Converter Circuits.
    Application Notes PDF
    Demystifying Auto-Zero Amplifiers Part 2
    by Eric Nolan and Reza Moghimi (Analog Dialogue, May 2000)
    Technical Articles HTML
    Demystifying Auto-Zero Amplifiers Part 1
    by Eric Nolan (Analog Dialogue, March 2000)
    Technical Articles HTML
    Zero-Drift Amplifiers  (pdf, 0) Overview PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    AD8572 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.

    SampleSample & Buy

    Price, packaging, availability

    AD8572 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8572AR Status: Production 8 ld SOIC 8 Ind Tube, 98 $2.38 $2.05 N  Material Info PCN/PDN Purchase
    AD8572AR-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.05 N  Material Info PCN/PDN Purchase
    AD8572AR-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $2.05 N  Material Info PCN/PDN Purchase
    AD8572ARUZ Status: Production 8 ld TSSOP 8 Ind Tube, 96 $2.06 $1.78 Y  Material Info PCN Purchase
    AD8572ARUZ-REEL Status: Production 8 ld TSSOP 8 Ind Reel, 2500 - $1.78 Y  Material Info PCN Purchase
    AD8572ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $2.06 $1.78 Y  Material Info PCN Purchase
    AD8572ARZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $1.78 Y  Material Info PCN Purchase
    AD8572ARZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.78 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-2 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    EVAL-PRAOPAMP-2CPZ Status: Production Dual CP-8 lead LFCSP Evaluation Board $20.19 Yes -
    EVAL-PRAOPAMP-2RMZ Status: Production Dual RM-8 lead MSOP Evaluation Board $20.19 Yes -
    EVAL-PRAOPAMP-2RZ Status: Production Dual 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.

    Check Inventory & Purchase

    View Sales and Distribution Offices

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