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ADL5902

Analog Devices
Part Number ADL5902
Manufacturer Analog Devices
Description TruPwr Detector
Published Feb 27, 2016
Detailed Description Data Sheet FEATURES Accurate rms-to-dc conversion from 50 MHz to 9 GHz Single-ended input dynamic range of 65 dB No balu...
Datasheet PDF File ADL5902 PDF File

ADL5902
ADL5902


Overview
Data Sheet FEATURES Accurate rms-to-dc conversion from 50 MHz to 9 GHz Single-ended input dynamic range of 65 dB No balun or external input matching required Waveform and modulation independent, such as GSM/CDMA/W-CDMA/TD-SCDMA/WiMAX/LTE Linear-in-decibels output, scaled 53 mV/dB Transfer function ripple: <±0.
1 dB Temperature stability: <±0.
3 dB All functions temperature and supply stable Operates from 4.
5 V to 5.
5 V from −40°C to +125°C Power-down capability to 1.
5 mW Pin-compatible with the 50 dB dynamic range AD8363 APPLICATIONS Power amplifier linearization/control loops Transmitter power controls Transmitter signal strength indication (TSSI) RF instrumentation GENERAL DESCRIPTION The ADL5902 is a true rms responding power detector that has a 65 dB measurement range when driven with a single-ended 50 Ω source.
This feature makes the ADL5902 frequency versatile by eliminating the need for a balun or any other form of external input tuning for operation up to 9 GHz.
The ADL5902 provides a solution in a variety of high frequency systems requiring an accurate measurement of signal power.
Requiring only a single supply of 5 V and a few capacitors, it is easy to use and capable of being driven single-ended or with a balun for differential input drive.
The ADL5902 can operate from 50 MHz to 9 GHz and can accept inputs from −62 dBm to at least +3 dBm with large crest factors, such as GSM, CDMA, W-CDMA, TD-SCDMA, WiMAX, and LTE modulated signals.
The ADL5902 can determine the true power of a high frequency signal having a complex low frequency modulation envelope or can be used as a simple low frequency rms voltmeter.
Used as a power measurement device, VOUT is connected to VSET.
The output is then proportional to the 50 MHz to 9 GHz 65 dB TruPwr Detector ADL5902 FUNCTIONAL BLOCK DIAGRAM VPOS 3 POS 10 ADL5902 TEMPERATURE SENSOR INHI 14 INLO 15 LINEAR-IN-dB VGA (NEGATIVE SLOPE) NC 2 IDET X2 X2 ITGT G=5 8 TEMP 7 VSET 6 VOUT NC 16 NC 13 BIAS AND POWER- VREF DO...



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