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  2. RF and Microwave
  3. RF Power Detectors
  4. Logarithmic Detectors
  5. AD8313


Features and Benefits

  • Wide bandwidth:
    0.1 GHz to 2.5 GHz min
  • High dynamic range:
    70 dB to ±3.0 dB
  • High accuracy: ±1.0 dB over 65 dB range (@ 1.9 GHz)
  • Fast response:
    40 ns full-scale typical
  • Controller mode with error output
  • Scaling stable over supply and temperature
  • Wide supply range:
    2.7 V to 5.5 V
  • Low power:
    40 mW at 3 V
  • Power-down feature:
    60 mW at 3 V

Product Details

The AD8313 is a complete multistage demodulating logarithmic amplifier that can accurately convert an RF signal at its input to an equivalent decibel-scaled value at its dc output. The AD8313 maintains a high degree of log conformance for signal frequencies from 0.1 GHz to 2.5 GHz. Application is straightforward, requiring only a single supply of 2.7 V to 5.5 V and the addition of a suitable input and supply decoupling. Operating on a 3 V supply, its 13.7 mA consumption (for TA = 25°C) is only 41 mW. A power-down feature is provided; the input is taken high to initiate a low current (20 µA) sleep mode, with a threshold at half the supply voltage

The AD8313 is fabricated on Analog Devices, Inc., advanced 25 GHz silicon bipolar IC process and is available in an 8-lead MSOP package. The operating temperature range is −40°C to +85°C.

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 (14)
  • Data Sheets (1)
  • Frequently Asked Questions (1)
  • Tutorials (1)
  • Product Selection Guide (1)
  • Technical Articles (9)
  • Application Notes (1)
  • Tools & Simulations

    Design Tools


    ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.


    ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    AD8313ARM Material Declaration Reliability Data 8-Lead MSOP
    AD8313ARMZ Material Declaration Reliability Data 8-Lead MSOP
    AD8313ARMZ-REEL Material Declaration Reliability Data 8-Lead MSOP
    AD8313ARMZ-REEL7 Material Declaration Reliability Data 8-Lead MSOP
    Wafer Fabrication Data

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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.