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AD8223

PRODUCTION

Single-Supply, Low Cost Instrumentation Amplifier

Data Sheet (Rev. 0) Product Selection Table
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Overview

  • Gain set with 1 resistor per amplifier
    Gain = 5 to 1000
  • Inputs
    Voltage range to 150 mV below negative rail
    25 nA maximum input bias current
    30 nV/√Hz, RTI noise @ 1 kHz
  • Power supplies
    Dual supply: ±2V to ±12
    Single supply: 3V to 24V
    500 μA maximum supply current

The AD8223 is an integrated single-supply instrumentation amplifier that delivers rail-to-rail output swing on a single supply (3 V to 24 V). The AD8223 conforms to the 8-lead industry standard pinout configuration

The AD8223 is simple to use: one resistor sets the gain. With no external resistor, the AD8223 is configured for G = 5 and with an external resistor, the AD8223 can be programmed for gains up to 1000.

The AD8223 has a wide input common-mode range and can amplify signals that have a 150 mV common-mode voltage below ground. Although the design of the AD8223 is optimized to operate from a single supply, the AD8223 still provides excellent performance when operated from a dual voltage supply (±2 V to ±12 V).

Low power consumption (1.5 mW at 3 V), wide supply voltage range, and rail-to-rail output swing make the AD8223 ideal for battery-powered applications. The rail-to-rail output stage maximizes the dynamic range when operating from low supply voltages. The AD8223 replaces discrete instrumentation amplifier designs and offers superior linearity, temperature stability, and reliability in a minimum of space.

Applications

  • Low power medical instrumentation
  • Transducer interface
  • Thermocouple amplifiers
  • Industrial process controls
  • Difference amplifiers
  • Low power data acquisition

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    AD8223
    Single-Supply, Low Cost Instrumentation Amplifier
    AD8223 Functional Block Diagram
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    Documentation

    Data Sheet 1

    User Guide 1

    Application Note 2

    Technical Articles 1

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    Software Resources

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    Tools & Simulations

    In-Amp Diamond Plot Tool

    The Diamond Plot Tool is a web application that generates a configuration-specific Output Voltage Range vs. Input Common-Mode Voltage graph, also known as the Diamond Plot, for Analog Devices Instrumentation Amplifiers. Based on user inputs such as supply voltage, gain, and input signal range, the tool detects saturation and recommends in-amps for which the input signal is in-range and the configuration is valid. Avoid saturation, find the best in-amp for your design, and save time.

    Open Tool

    Signal Chain Designer

    Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

    Open Tool

    Evaluation Kits

    eval board
    schematic 1
    schematic 2
    schematic 3
    EVAL-INAMP

    AD62x, AD822x, AD842x Series InAmp Evaluation Board

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    Product Details

    Analog Devices provides a line of evaluation boards designed to help users evaluate our instrumentation amplifiers in 8 pin packages. Access the user guide UG-261.

    This user guide describes three generic evaluation boards that can be used to evaluate many of Analog Devices instrumentation amplifiers. For information on the performance of a specific instrumentation amplifier, see the data sheet for that instrumentation amplifier.

    • 3 generic, easy-to-use evaluation boards
      • Shipped with an assortment of Analog Devices in-amps
      • Solder in the in-amp to be tested
      • Test pins already populated
      • Decoupling capacitors already populated
    • EVAL-INAMP-62RZ board: Compatible with AD620, AD621, AD622, AD623, AD627, AD8223, AD8225,  LT1167, LT1168 and LT6370 in SOIC or PDIP
    • EVAL-INAMP-82RZ board: Compatible with AD8221, AD8226, AD8227, AD8228, AD8229, AD8421, AD8428, and AD8429 in SOIC package
    • EVAL-INAMP-82RMZ board: Compatible with AD8220, AD8221, AD8226, AD8227, AD8228, AD8236, and AD8421 in MSOP package
    EVAL-INAMP
    AD62x, AD822x, AD842x Series InAmp Evaluation Board
    InAmp Evaluation Board InAmp Evaluation Board - Bottom View InAmp Evaluation Board - Top View

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