GENERAL DESCRIPTION
The AD8314 is a complete low cost subsystem for the measurement and control of RF signals in the frequency range of 100 MHz to 2.7 GHz, with a typical dynamic range of 45 dB, intended for use in a wide variety of cellular handsets and other wireless devices. It provides a wider dynamic range and better accuracy than possible using discrete diode detectors. In particular, its temperature stability is excellent over the full operating range of −40°C to +85°C.
Its high sensitivity allows control at low power levels, thus reducing the amount of power that needs to be coupled to the detector. It is essentially a voltage-responding device, with a typical signal range of 1.25 mV to 224 mV rms or –58 dBV to −13 dBV. This is equivalent to −45 dBm to 0 dBm, re 50 Ω.

FEATURES
   Complete RF detector/controller function
   Typical range:−58 dBV to −13 dBV
      −45 dBm to 0 dBm, re 50 Ω
   Frequency response from 100 MHz to 2.7 GHz
   Temperature-stable linear-in-dB response
      Accurate to 2.7 GHz
   Rapid response: 70 ns to a 10 dB step
   Low power: 12 mW at 2.7 V
   Power down to 20 μA

APPLICATIONS
   Cellular handsets (TDMA, CDMA , GSM)
   RSSI and TSSI for wireless terminal devices
   Transmitter power measurement and control