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AD8230:  16 V Rail-to-Rail, Zero-Drift, Precision Instrumentation Amplifier

Product Details


The AD8230 is a low drift, differential sampling, precision instrumentation amplifier. Auto-zeroing reduces offset voltage drift to less than 50 nV/°C. The AD8230 is well-suited for thermocouple and bridge transducer applications. The AD8230’s high CMR of 110 dB (minimum) rejects line noise in measurements where the sensor is far from the instrumentation. The 16 V rail-to-rail, common-mode input range is useful for noisy environments where ground potentials vary by several volts. Low frequency noise is kept to a minimal 3 μV p-p, making the AD8230 perfect for applications requiring the utmost dc precision. Moreover, the AD8230 maintains its high performance over the extended industrial temperature range of −40°C to +125°C.

Two external resistors are used to program the gain. By using matched external resistors, the gain stability of the AD8230 is much higher than instrumentation amplifiers that use a single resistor to set the gain. In addition to allowing users to program the gain between 101 and 1000, users can adjust the output offset voltage.

The AD8230 is versatile yet simple to use. Its auto-zeroing topology significantly minimizes the input and output transients typical of commutating or chopper instrumentation amplifiers. The AD8230 operates on ±4 V to ±8 V (+8 V to +16 V) supplies and is available in an 8-lead SOIC.

Applications

  • Pressure measurements
  • Temperature measurements
  • Strain measurements
  • Automotive diagnostics
  • Data Sheet, Rev. B, 9/07

    FEATURES and BENEFITS

    • Resistor programmable gain range: 101 to 1000
    • Supply voltage range: ±4 V to ±8 V
    • Rail-to-rail input and output
    • Maintains performance over −40°C to +125°C

    1 The AD8230 can be programmed for a gain as low as 2, but the maximum input voltage is limited to approximately 750 mV.

    • Excellent ac and dc performance
      110 dB minimum CMR @ 60 Hz, G = 10 to 1000
      10 μV maximum offset voltage (RTI, ±5 V operation)
      50 nV/°C maximum offset drift
      20 ppm maximum gain nonlinearity

    Pin Configuration for AD8230

    Documentation

    Title Content Type File Type
    AD8230: 16 V Rail-to-Rail, Zero-Drift, Precision Instrumentation Amplifier Data Sheet (Rev B, 09/2007) (pdf, 421 kB) Data Sheets PDF
    AN-282: Fundamentals of Sampled Data Systems  (pdf, 2131 kB) Application Notes PDF
    AN-671: Reducing RFI Rectification Errors in In-Amp Circuits  (pdf, 208 kB) Application Notes PDF
    A Designer's Guide to Instrumentation Amplifiers (3rd Edition) Design Handbooks HTML
    Which ADC Architecture Is Right for Your Application?
    by Walt Kester, Analog Devices, Inc. (Analog Dialogue, Vol 39, June 2005)
    Analog Dialogue HTML
    Auto-Zero Amplifiers  (doc, 75 kB)
    A wide variety of electronic applications, especially those involving very small input signals, require signal paths with very low offset voltage and offset voltage drift over time and temperature.
    Technical Articles DOC
    High-performance Adder Uses Instrumentation Amplifiers
    Make an adder circuit using instrumentation amplifiers to increase input impedance.
    (EDN, 9/3/2009)
    Technical Articles HTML
    Input Filter Prevents Instrumentation-amp RF-Rectification Errors
    by Charles Kitchin, Lew Counts, and Moshe Gerstenhaber, Analog Devices, Inc. (EDN, 11/13/2003)
    Technical Articles HTML
    The AD8221 - Setting a New Industry Standard for Instrumentation Amplifiers  (pdf, 582 kB) Technical Articles PDF
    Applying Instrumentation Amplifiers Effectively: The Importance of an Input Ground Return  (pdf, 508 kB) Technical Documentation PDF
    Zero-Drift Amplifiers  (pdf, 0) Overview PDF
    Leading Inside Advertorials: Applying Instrumentation Amplifiers Effectively–The Importance of an Input Ground Return  (pdf, 121 kB) Overview PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Evaluation Kits & Symbols & Footprints

    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

    AD8230 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8230YRZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.53 $2.99 Y  Material Info Notify Me Purchase Sample
    AD8230YRZ-REEL Status: Production 8 ld SOIC 8 Ind Reel, 2500 $3.53 $2.99 Y  Material Info Notify Me Purchase
    AD8230YRZ-REEL7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 $3.53 $2.99 Y  Material Info Notify Me 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.


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