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AD622:  LOW COST INSTRUMENTATION AMPLIFIER

The AD622 is a low cost, moderately accurate instrumentation amplifier that requires only one external resistor to set any gain between 2 and 1000. For a gain of 1, no external resistor is required. The AD622 is a complete difference or subtracter amplifier system that also provides superior linearity and common-mode rejection by incorporating precision laser-trimmed resistors.

The AD622 ...More

AD622:  LOW COST INSTRUMENTATION AMPLIFIER

Product Description

The AD622 is a low cost, moderately accurate instrumentation amplifier that requires only one external resistor to set any gain between 2 and 1000. For a gain of 1, no external resistor is required. The AD622 is a complete difference or subtracter amplifier system that also provides superior linearity and common-mode rejection by incorporating precision laser-trimmed resistors.

The AD622 replaces low cost, discrete, two or three op amp instrumentation amplifier designs and offers good common-mode rejection, superior linearity, temperature stability, reliability, and board area consumption. The low cost of the AD622 eliminates the need to design discrete instrumentation amplifiers to meet stringent cost targets. While providing a lower cost solution, it also provides performance and space improvements.

Applications

  • Transducer interface
  • Low cost thermocouple amplifier
  • Industrial process controls
  • Difference amplifier
  • Low cost data acquisition

    • Data Sheet, Rev. D, 8/07

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    • Easy to use
    • Low cost solution
    • Higher performance than two or three op amp design
    • Unity gain with no external resistor
    • Optional gains with one external resistor
      (Gain range: 2 to 1000)
    • Wide power supply range: ±2.6 V to ±15 V
    • Available in 8-lead PDIP and 8-lead SOIC_N packages
    • Low power, 1.5 mA maximum supply current
    • DC performance
      0.15% gain accuracy: G = 1
      125 μV maximum input offset voltage
      1.0 μV/°C maximum input offset drift
      5 nA maximum input bias current
      66 dB minimum common-mode rejection ratio: G = 1
    • Noise
      12 nV/√Hz @ 1 kHz input voltage noise
      0.60 μV p-p noise: 0.1 Hz to 10 Hz, G = 10
    • AC characteristics
      800 kHz bandwidth: G = 10
      10 μs settling time to 0.1% @ G = 1 to 100
      1.2 V/μs slew rate
    • Single/Dual Supply: Dual
    • Voltage Supply (Vmax) : ±18V
    • Gain Setting Method: Resistor
    • Gain Range (min to max): 1000
    • Bandwidth G=10 (kHz typ): 800kHz
    • CMRR (dB): 86dB
    • Vnoise RTI 1-10 Hz µVp-p : 0.3µV p-p
    • Temperature Range: -40 to +85
    • Gain Error (%) max: +0.2%
    • Supply Current : 1.3mA
    • Package: DIP,SOIC
    • Vosi (µV): 60µV

    Pin Configuration Diagram for AD622

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    Package Description
    The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

    For detailed drawings and chemical composition please consult our  Package Site

    Pin Count
    Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
    Price
    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.

    Production Availability
    This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
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    Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

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    This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

    *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.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.