AD8293G160:  Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain = 160

The AD8293G80/AD8293G160 are small, low cost, precision instrumentation amplifiers that have low noise and rail-to-rail outputs. They are available in two ...More

AD8293G160:  Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain = 160

Product Description

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

    • 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

    Diagrams

    AD8293G160 Diagram
    Functional Block Diagram for AD8293G160

    技术指标

    Single/Dual Supply Single
    Gain Setting Method fixed
    Gain Range (min to max) n/a
    Bandwidth G=10 (kHz typ) 0.5kHz
    Vnoise RTI 1-10 Hz µVp-p 0.7µV p-p
    Temperature Range -40 to +85
    Supply Current (max) 1.3mA

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    AD8293G160 - Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain = 160

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