AD8273:  Dual-Channel, Audio Difference Amplifier

The AD8273 is a low distortion, dual-channel amplifier with internal gain setting resistors. With no external components, it can be configured as a high performance difference amplifier (G = ½ or 2), ...More

AD8273:  Dual-Channel, Audio Difference Amplifier

Product Description

The AD8273 is a low distortion, dual-channel amplifier with internal gain setting resistors. With no external components, it can be configured as a high performance difference amplifier (G = ½ or 2), inverting amplifier (G = ½ or 2), or noninverting amplifier (G = 1½ or 3).

The AD8273 operates on both single and dual supplies and only requires 2.5 mA maximum supply current for each amplifier. It is specified over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant.

Applications

  • High performance audio
  • Instrumentation amplifier building blocks
  • Level translators
  • Automatic test equipment
  • Sin/Cos encoders

    • Data Sheet, Rev. 0, 1/08

    Features

    • Two gain settings
      Gain of ½ (−6 dB)
      Gain of 2 (+6 dB)
      0.05% maximum gain error
      10 ppm maximum gain drift
    • Excellent ac specifications
      20 V/μs minimum slew rate
      800 ns to 0.01% settling time
    • Low distortion: 0.004%, 20 Hz to 20 kHz
    • High accuracy dc performance
      77 dB minimum CMRR
      700 μV maximum offset voltage
    • 14-lead SOIC package
    • Supply current: 2.5 mA maximum per channel
    • Supply range: ±2.5 V to ±18 V

    Diagrams

    AD8273 Diagram
    Functional Block Diagram for AD8273

    Specifications

    Single/Dual Supply Dual
    Voltage Supply (Vmax) +36V
    Gain Setting Method Pin
    Gain Range (min to max) 1.5
    Bandwidth G=10 (kHz typ) 20000kHz
    CMRR (dB) 86dB
    Vnoise RTI 1-10 Hz µVp-p 2µV p-p
    Temperature Range -40 to +125
    Supply Current (max) 2.5mA

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    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 +4.5 +5.5 2.2mA 6 15ppm/C -40 to +125 SOIC $1.21