GENERAL DESCRIPTION
The ADL5502 is a mean-responding (true rms) 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 450 MHz to 6 GHz with envelope bandwidths over 10 MHz. Requiring only a single supply between 2.5 V and 3.3 V, the detector draws less than 3 mA. The input is internally ac-coupled and has a nominal input impedance of 500 Ω.

FEATURES
   True rms response detector
   Envelope peak hold output
   Excellent temperature stability
   ±0.25 dB rms detection accuracy vs. temperature
   ±0.25 dB envelope detection accuracy vs. temperature;
      over the top 25 dB of the input range
   Over 35 dB input power dynamic range, inclusive of crest factor
   RF bandwidths from 450 MHz to 6 GHz
   Envelope bandwidths of 10 MHz
   500 Ω input impedance
   Single-supply operation: 2.5 V to 3.3 V
   Low power: 3 mA at 3 V supply
   RoHS-compliant part

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