Features and Benefits

  • Calibrated rms response
  • Excellent temperature stability
  • Up to 30 dB input range at 2.5 GHz
  • 700 mV rms, 10 dBm, re 50 Ω maximum input
  • ±0.25 dB linear response up to 2.5 GHz
  • Single-supply operation: 2.7 V to 5.5 V
  • Low power: 3.3 mW at 3 V supply
  • Rapid power-down to less than 1 µA

Product Details

The AD8361 is a mean-responding power detector for use in high frequency receiver and transmitter signal chains, up to 2.5 GHz. It is very easy to apply. It requires a single supply only between 2.7 V and 5.5 V, a power supply decoupling capacitor, and an input coupling capacitor in most applications. The output is a linear-responding dc voltage with a conversion gain of 7.5 V/V rms. An external filter capacitor can be added to increase the averaging time constant.

The AD8361 is intended for true power measurement of simple and complex waveforms. The device is particularly useful for measuring high crest-factor (high peak-to-rms ratio) signals, such as CDMA and W-CDMA. The AD8361 has three operating modes to accommodate a variety of analog-to-digital converter requirements:

  1. Ground reference mode, in which the origin is zero.
  2. Internal reference mode, which offsets the output 350 mV above ground.
  3. Supply reference mode, which offsets the output to VS/7.5.

The AD8361 is specified for operation from −40°C to +85°C and is available in 8-lead MSOP and 6-lead SOT-23 packages. It is fabricated on a proprietary high fT silicon bipolar process.

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.

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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.