Features and Benefits

  • Wide bandwidth
    G = +2
    Small Signal
    250 MHz
    Large Signal (4 V p-p)
    180 MHz
  • Ultralow Distortion (SFDR), Low Noise
    −113 dBc Typ @ 1 MHz
    −95 dBc Typ @ 5 MHz
    −72 dBc Typ @ 20 MHz
    46 dBm Third Order Intercept @ 25 MHz
    7.0 nV/√Hz Spectral Noise Density
  • High Speed
    Slew Rate 1300 V/µs
    Settling 16 ns to 0.01%, 2 V Step
    ±3 V to ±5 V Supply Operation
    17 mA Supply Current

Product Details

The AD9631/AD9632 are very high speed and wide bandwidth amplifiers. The AD9631 is unity gain stable. The AD9632 is stable at gains of 2 or greater. Using a voltage feedback architecture, the exceptional settling time, bandwidth, and low distortion of the AD9631/AD9632 meet the requirements of many applications that previously depended on current feedback amplifiers. Its classical op amp structure works much more predictably in many designs.

A proprietary design architecture has produced an amplifier that combines many of the best characteristics of both current feedback and voltage feedback amplifiers. The AD9631/AD9632 exhibit exceptionally fast and accurate pulse response (16 ns to 0.01%) as well as extremely wide small signal and large signal bandwidth and ultralow distortion. The AD9631 achieves −72 dBc at 20 MHz, 320 MHz small signal bandwidth, and 175 MHz large signal bandwidths.

These characteristics position the AD9631/AD9632 ideally for driving flash as well as high resolution ADCs. Additionally, the balanced high impedance inputs of the voltage feedback architecture allow maximum flexibility when designing active filters.

The AD9631/AD9632 are offered in the industrial (−40°C to +85°C) temperature range. They are available in PDIP and SOIC.


  • ADC input driver
  • Differential amplifiers
  • IF/RF amplifiers
  • Pulse amplifiers
  • Professional video
  • DAC current to voltage
  • Baseband and video communications
  • Pin diode receivers
  • Active filters/integrators/log amps

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

  • View All (20)
  • Data Sheets (1)
  • Application Notes (2)
  • User Guides (1)
  • Tutorials (12)
  • Webcasts (1)
  • Technical Articles (3)
  • Tutorials

    Tools & Simulations

    SPICE Models

    Design Tools

    VRMS/dBm/dBu/dBV calculators

    A utility to convert between standard units of power measurement and signal strength.

    Power Dissipation vs Die Temp

    This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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    Evaluation Boards

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.