GENERAL DESCRIPTION
The ADL5502 is a mean-responding power detector in combination with an envelope detector to accurately determine the crest factor of a modulated signal. It can be used in high frequency receiver and transmitter signal chains from 800 MHz to 3.8 GHz with envelope bandwidths over 10 MHz. Requiring only a single supply between 2.7 V and 3.5 V, the detector draws less than 5 mA. The input is internally ac-coupled and has a nominal input impedance of 500 Ω.

FEATURES
   True rms response detector
   Envelope output with peak hold option
   Excellent temperature stability
   ±0.25 dB rms detection accuracy vs. temperature
   ±0.25 dB envelope detection accuracy vs. temperature;
      over the top 15 dB of the input range
   Over 30 dB input power dynamic range, inclusive of crest
      factor, up to 3.8 GHz
   RF bandwidths from 800 MHz to 3.8 GHz
   Envelope bandwidths of 10 MHz
   500 Ω input impedance
   Single-supply operation: 2.7 V to 3.5 V
   Low power: 5 mA at 3 V supply
   RoHS compliant

APPLICATIONS
   Power and envelope measurement of W-CDMA, CDMA2000,
      and QPSK-/QAM-based OFDM, and other complex
      modulation waveforms
   RF transmitter or receiver power and envelope measurement