AD8274:  Very Low Distortion, Precision Difference Amplifier

The AD8274 is a difference amplifier that delivers excellent ac and dc performance. Built on Analog Devices, Inc., proprietary iPolar® process and laser-trimmed resistors, AD8274 achieves a ...続きを見る

AD8274:  Very Low Distortion, Precision Difference Amplifier

製品概要

The AD8274 is a difference amplifier that delivers excellent ac and dc performance. Built on Analog Devices, Inc., proprietary iPolar® process and laser-trimmed resistors, AD8274 achieves a breakthrough in distortion vs. current consumption and has excellent gain drift, gain accuracy, and CMRR.

Distortion in the audio band is an extremely low 0.00025% (112 dB) at a gain of ½ and 0.00035% (109 dB) at a gain of 2 while driving a 600 Ω load.

With supply voltages up to ±18 V (+36 V single supply), the AD8274 is well suited for measuring large industrial signals. Additionally, the part’s resistor divider architecture allows it to measure voltages beyond the supplies.

With no external components, the AD8274 can be configured as a G = ½ or G = 2 difference amplifier. For single-ended applications that need high gain stability or low distortion performance, the AD8274 can also be configured for several gains ranging from −2 to +3.

The excellent distortion and dc performance of the AD8274, along with its high slew rate and bandwidth, make it an excellent ADC driver. Because of the part’s high output drive, it also makes a very good cable driver.

The AD8274 only requires 2.6 mA maximum supply current. It is specified over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant. For the dual version, see the AD8273 data sheet.

Applications

  • ADC driver
  • High performance audio
  • Instrumentation amplifier building blocks
  • Level translators
  • Automatic test equipment
  • Sine/cosine encoders

    • Data Sheet, Rev 0, 08/2008

    Features

    • Very low distortion
      0.00025% THD + N ( 20 kHz)
      0.0015% THD + N (100 kHz)
      Drives 600Ω loads
    • Excellent Gain Accuracy
      0.03% maximum gain error
      2 ppm/°C maximum gain drift
      Gains of ½ or 2
    • AC Specifications
      20 V/µs minimum slew rate
      800 ns to 0.01% settling time
    • High accuracy dc performance
      83 dB minimum CMRR
      700 µV maximum offset voltage
    • 8-lead SOIC and MSOP packages
    • Supply current: 2.6 mA maximum
    • Supply range: ±2.5 V to ±18 V

    仕様

    Voltage Supply (Vmax) +36V
    Bandwidth G=10 (kHz typ) 10000kHz
    CMRR (dB) 86dB
    Temperature Range -40 to +85
    Supply Current (max) 2.6mA
    Package MSOP,SOIC

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    新製品情報のRSSフィードを取得
    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
    AD8216 -4 to 65 3000 90 3 +4.5 +5.5 2mA 10 10ppm/C -40 to +125 SOIC $1.62
    AD8228 - 650 100 10,100 +4.6