ADL5502 RF Power Detection IC

By Analog Devices Inc 51

ADL5502 RF Power Detection IC

ADI's ADL5502: Now, cell phone designers can manage wireless handset power more efficiently, extend battery life and better process complex 3G and emerging 4G cell phone signals, with one of the industry's first dual-function RF detectors in a single package that combines an rms detector with an envelope detector to facilitate the crest-factor measurement of complex signals.

The ADL5502 detector features a ±0.1 dB accuracy with crest factors up to 11 dB, which is five times more precise than competing devices. With the higher level of integration, cell phone users can expect up to 20% longer battery life. So now, cell phone manufacturers can reduce cost and development efforts by eliminating look-up tables and correction factors that otherwise would be required to accurately control transmitted power levels. The ADL5502 provides ±0.2 dB temperature stability from -40°C to +85°C, further reducing calibration routines while allowing handsets to operate more reliably over temperature.

  • 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
  • RoHS compliant part
  • 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
  • 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

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