GENERAL DESCRIPTION

The ADL5505 is a TruPwr™ mean-responding (true rms) power detector for use in high frequency receiver and transmitter signal chains from 450 MHz to 6000 MHz. Requiring only a single supply between 2.5 V and 3.3 V, the detector draws less than 1.8 mA. The input is internally ac-coupled and has a nominal input impedance of 500 Ω. The rms output is a linear-responding dc voltage with a conversion gain of 1.86 V/V rms at 900 MHz.

FEATURES

True rms response detector

Excellent temperature stability

±0.25 dB rms detection accuracy vs. temperature

Over 35 dB input power dynamic range, inclusive of crest factor

RF bandwidths from 450 MHz to 6000 MHz

500 Ω input impedance

Single-supply operation: 2.5 V to 3.3 V

Low power: 1.8 mA at 3.0 V supply

RoHS-compliant part

APPLICATIONS

Power measurement of W-CDMA, CDMA2000, QPSK-/QAM-based OFDM (LTE and WiMAX), and other complex modulation waveforms

RF transmitter or receiver power measurement