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GENERAL DESCRIPTION

The AD8362 is a true rms-responding power detector that has a 65 dB measurement range. It is intended for use in a variety of high frequency communication systems and in instrumentation requiring an accurate response to signal power. It is easy to use, requiring only a single supply of 5 V and a few capacitors. It can operate from arbitrarily low frequencies to over 3.8 GHz and can accept inputs that have rms values from 1 mV to at least 1 V rms, with large crest factors, exceeding the requirements for accurate measurement of CDMA signals.

FEATURES

Complete fully calibrated measurement/control system

Accurate rms-to-dc conversion from 50 Hz to 3.8 GHz

Input dynamic range of >65 dB: ?52 dBm to +8 dBm in 50 Ω

Waveform and modulation independent, such as GSM/CDMA/TDMA

Linear-in-decibels output, scaled 50 mV/dB

Law conformance error of 0.5 dB

All functions temperature and supply stable

Operates from 4.5 V to 5.5 V at 24 mA

Power-down capability to 1.3 mW

APPLICATIONS

Power amplifier linearization/control loops

Transmitter power controls

Transmitter signal strength indication (TSSI)

RF instrumentation