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AD8293G80:  Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain = 80

Product Details

Product Status:Recommended for New Designs

The AD8293G80/AD8293G160 are small, low cost, precision instrumentation amplifiers that have low noise and rail-to-rail outputs. They are available in two fixed-gain models: 80 and 160. They incorporate the gain setting resistors and filter resistors, reducing the number of ancillary components. For example, only two external capacitors are needed to implement a 2-pole filter. The AD8293G80/AD8293G160 also feature low offset voltage, offset drift, and gain drift coupled with high common mode rejection. They are capable of operating on a supply of 1.8 V to 5.5 V.

With a low offset voltage of 20 μV (AD8293G160B), an offset voltage drift of 0.3 μV/°C, and a voltage noise of only 0.7 μV p-p (0.01 Hz to 10 Hz), the AD8293G80/AD8293G160 are ideal for applications where error sources cannot be tolerated.

Precision instrumentation, position and pressure sensors, medical instrumentation, and strain gauge amplifiers benefit from the low noise, low input bias current, and high common mode rejection. The small footprint and low cost are ideal for high volume applications. The small package and low power consumption allow the maximum channel density and the minimum board size required for portable systems. Designed for ease of use, these instrumentation amplifiers, unlike more traditional ones, have a buffered reference, eliminating the need for an additional op amp to set the reference voltage to midsupply.

The AD8293G80/AD8293G160 are specified over the industrial temperature range from −40°C to +85°C. The AD8293G80/AD8293G160 are available in a halogen-free, Pb-free, 8-lead SOT-23.


Applications
  • Current sensing
  • Strain gauges
  • Laser diode control loops
  • Portable medical instruments
  • Thermocouple amplifiers
  • Data Sheet, Rev. 0, 07/08

    FEATURES and BENEFITS

    • Small package: 8-lead SOT-23
    • Reduced component count
          Incorporates gain resistors & filter resistors
    • Low offset voltage: 20 μV maximum
    • Low offset drift: 0.3 μV/°C maximum
    • Low gain drift: 25 ppm/°C maximum
    • High CMR: 140 dB typical
    • Low noise: 0.7 μV p-p from 0.01 Hz to 10 Hz
    • Single-supply operation: 1.8 V to 5.5 V
    • Rail-to-rail output
    • Available in 2 fixed-gain models

    Functional Block Diagram for AD8293G80

    Documentation

    Title Content Type File Type
    AD8293G80/AD8293G160: Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain Data Sheet (Rev 0, 08/2008) (pdf, 385 kB) Data Sheets PDF
    A Designer's Guide to Instrumentation Amplifiers (3rd Edition) Design Handbooks HTML
    High-performance Adder Uses Instrumentation Amplifiers
    Make an adder circuit using instrumentation amplifiers to increase input impedance.
    (EDN, 9/3/2009)
    Technical Articles HTML
    Zero-Drift Amplifiers  (pdf, 0) 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.

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    Price, packaging, availability

    AD8293G80 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8293G80ARJZ-R2 Status: Production 8 ld SOT-23 8 Ind Reel, 250 $0.69 $0.69 Y  Material Info Notify Me Purchase
    AD8293G80ARJZ-R7 Status: Production 8 ld SOT-23 8 Ind Reel, 3000 - $0.50 Y  Material Info PCN Purchase Sample
    AD8293G80ARJZ-RL Status: Production 8 ld SOT-23 8 Ind Reel, 10000 - $0.50 Y  Material Info PCN Purchase
    AD8293G80BRJZ-R2 Status: Production 8 ld SOT-23 8 Ind Reel, 250 $1.44 $1.44 Y  Material Info Notify Me Purchase
    AD8293G80BRJZ-R7 Status: Production 8 ld SOT-23 8 Ind Reel, 3000 - $1.05 Y  Material Info PCN Purchase
    AD8293G80BRJZ-RL Status: Production 8 ld SOT-23 8 Ind Reel, 10000 - $1.05 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.


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