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AD8223:  Single-Supply, Low Cost Instrumentation Amplifier

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 ...More

AD8223:  Single-Supply, Low Cost Instrumentation Amplifier

Product Description

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

    • RESOURCES & TOOLS

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    • 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
    • Single/Dual Supply: Single/Dual
    • Voltage Supply (Vmax) : ±12V
    • Gain Setting Method: Pin
    • Bandwidth G=10 (kHz typ): 125kHz
    • CMRR (dB): 86dB
    • Vnoise RTI 1-10 Hz µVp-p : 0.6µV p-p
    • Temperature Range: -40 to +85
    • Gain Error (%) max: ±0.1%
    • Supply Current : 0.5mA
    • Package: MSOP,SOIC
    • Vosi (µV): 25µV

    Functional Block Diagram for AD8223

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