Datasheet AD8362 (Analog Devices)

50 Hz to 3.8 GHz 65 dB TruPwr™ Detector Data Sheet AD8362 FEATURES FUNCTIONAL BLOCK DIAGRAM Complete, fully calibrated measurement/control system DECL CHPF 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 INHI Waveform and modulation independent, such as x2 CLPF GSM/CDMA/TDMA INLO Linear-in-decibels output, scaled 50 mV/dB VOUT Law conformance error of 0.5 dB VTGT x2 All functions temperature and supply stable ACOM Operates from 4.5 V to 5.5 V at 24 mA Power-down capability to 1.3 mW VSET APPLICATIONS AD8362 Power amplifier linearization/control loops VREF BIAS VPOS Transmitter power controls Transmitter signal strength indication (TSSI)
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Radio frequency (RF) instrumentation COMM PWDN
029 Figure 1.
GENERAL DESCRIPTION Table 1. Next Generation Upgrades for the AD8362
The AD8362 is a true rms-responding power detector that has
Device No. Product Description
a 65 dB measurement range. It is intended for use in a variety of ADL5902 Improved temperature stability, single-ended input drive. high frequency communication systems and in instrumentation HMC1120 Improved sensitivity and range, includes envelope requiring an accurate response to signal power. It is easy to use, tracking and peak-hold function, single-ended requiring only a single supply of 5 V and a few capacitors. It input drive. operates from arbitrarily low frequencies to over 3.8 GHz and ADL5906 Improved temperature stability, single-ended accepts inputs from −52 dBm to +8 dBm with crest factors that input drive. Slightly lower input range. are typical of quadrature amplitude modulation (QAM) and AD8363 Improved temperature stability, single-ended orthogonal frequency division multiplexing (OFDM) modulation input drive. Lower input range. schemes. ADL5903 Lower range, significantly lower power consumption, single-ended input drive. The AD8362 has a 1.3 mW power consumption when powered ADL5501 Lower range, significantly lower power consumption, down by a logic high applied to the PWDN pin. It powers up linear in V/V output, single-ended input drive. within about 20 μs to its nominal operating current of 20 mA at 25°C. The AD8362 is supplied in a 16-lead TSSOP for operation over the temperature range of −40°C to +85°C.
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS EQUIVALENT CIRCUITS TYPICAL PERFORMANCE CHARACTERISTICS CHARACTERIZATION SETUP EQUIPMENT ANALYSIS CIRCUIT DESCRIPTION SQUARE LAW DETECTION VOLTAGE vs. POWER CALIBRATION OFFSET ELIMINATION TIME-DOMAIN RESPONSE OF THE CLOSED LOOP OPERATION IN RF MEASUREMENT MODE BASIC CONNECTIONS DEVICE DISABLE RECOMMENDED INPUT COUPLING Choosing Input Coupling Capacitors Single-Ended Input Drive OPERATION AT LOW FREQUENCIES CHOOSING A VALUE FOR CHPF CHOOSING A VALUE FOR CLPF ADJUSTING VTGT TO ACCOMMODATE SIGNALS WITH VERY HIGH CREST FACTORS ALTERING THE SLOPE TEMPERATURE COMPENSATION AND REDUCTION OF TRANSFER FUNCTION RIPPLE TEMPERATURE COMPENSATION AT VARIOUS WiMAX FREQUENCIES UP TO 3.8 GHz OPERATION IN CONTROLLER MODE RMS VOLTMETER WITH 90 dB DYNAMIC RANGE AD8362 EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE