AD8290:  G = 50, CMOS Sensor Amplifier with Current Excitation

The AD8290 contains both an adjustable current source to drive a sensor and a difference amplifier to amplify the signal voltage. The amplifier is set for a fixed gain of 50. The AD8290 is an ...More

AD8290:  G = 50, CMOS Sensor Amplifier with Current Excitation

Product Description

The AD8290 contains both an adjustable current source to drive a sensor and a difference amplifier to amplify the signal voltage. The amplifier is set for a fixed gain of 50. The AD8290 is an excellent solution for both the drive and the sensing aspects required for pressure, temperature, and strain gage bridges.

In addition, because the AD8290 operates with low power, works with a range of low supply voltages, and is available in a low profile package, it is suitable for drive/sense circuits in portable electronics as well.

The AD8290 is available in a lead free 3.0 mm × 3.0 mm × 0.55 mm package and is operational over the industrial temperature range of −40°C to +85°C.

Applications

  • Bridge and sensor drives
  • Portable electronics

    • Data Sheet, Rev. B, 2/08

    Features

    • Supply voltage range: 2.6 V to 5.5 V
    • Low power
      1.2 mA + 2× excitation current
      0.5 μA shutdown current
    • Low input bias current: ± 100 pA
    • High CMRR: 120 dB
    • Space savings: 16-lead, 3.0 mm × 3.0 mm × 0.55 mm LFCSP
    • Excitation current
      300 μA to 1300 μA range
      Set with external resistor

    Diagrams

    AD8290 Diagram
    Functional Block Diagram for AD8290

    Specifications

    Gain Setting Method fixed
    Gain Range (min to max) 50
    CMRR (dB) 120dB
    Vnoise RTI 1-10 Hz µVp-p 0.75µV p-p
    Supply Current (max) 4.68mA

    Explore Other Products

    AD8228 - Low Gain Drift Precision Instrumentation Amplifier Fixed G = 10, 100

    AD8274 - Very Low Distortion, Precision Difference Amplifier

    Subscribe to New Products Feed
    Part# Common Mode Range (V) Bandwidth G=10 (kHz typ) CMRR (dB) Gain Range (min to max) Voltage Supply (Vmin) Voltage Supply (Vmax) Supply Current (max) VosiTC (µV/deg C) Gain temp co. Temperature Range Package Price* (1000-4999)
    AD22057 -1 to 24 30 80 20 +3 +26 0.5mA - - -40 to +125 DIP, SOIC $4.62
    AD626 0 to 54 100 66 90 ±2.4 ±6 2mA 0.000006 150ppm/C -40 to +85 DIP, SOIC $3.70
    AD628 +/- 100 600 77 100 ±5 ±18 1.6mA - - -40 to +85 SOIC $1.78
    AD629 +/- 270 500 77 1 ±2.5 ±18 1mA - - -40 to +85 DIP, SOIC $2.84
    AD8202 -12 to 30 50 82 20 +3.5 +12 0.25mA 10 20ppm/C -40 to +125 Die, SOIC, SOP $1.51
    AD8203 -12 to 30 60 82 14 +3.5 +12 0.25mA 10 20ppm/C -40 to +125 SOP $1.37
    AD8205 -2 to 65 50 78 50 +4.5 +5 2mA 15 30ppm/C -40 to +125 Die, SOIC $1.51
    AD8206 -2 to 65 100 76 20 +4.5 +5.5 2mA 15 30ppm/C -40 to +125 Die, SOIC $1.37
    AD8210 -2 to 65 500 100 20 +4.5 +5.5 1.5mA 10 20ppm/C -40 to +125 SOIC $1.81
    AD8211 -2 to 65 500 120 20 - - 2mA 12 20ppm/C -40 to +125 SOT $0.81
    AD8212 7 to 65 1000 100 1,000 +7 +65 720µA 10 - -40 to +125 MSOP $0.93
    AD8213 -2 to 65 500 100 20 +4.5 +5.5 2.5mA 12 10ppm/C -40 to +125 MSOP $2.01
    AD8214 5 to 65 - 80 100 +5 +65 1.2mA 15 - -40 to +125 MSOP $0.76
    AD8215 -2 to 65 450 100 20 - - 2.2mA 6 15ppm/C -40 to +125 SOIC $1.21
    AD8216 -4 to 65