Features: Complete Gain and VSWR Detector/Controller
Dual-Channel RF Power Detector/Controller
Low-Frequency to 2.5GHz Frequency Range
Exceptional Accuracy Over Temperature
High 80dB Dynamic Range
2.7V to 5.25V Supply Voltage Range*
Internal 2V Reference
Scaling Stable Over Supply and Temperature
Variations
Controller Mode with Error Output
Available in 5mm x 5mm 28-Pin Thin QFN
PackageApplicationReturn Loss/VSWR Measurements
Dual-Channel RF Power Measurements
Dual-Channel Precision AGC/RF Power Control
Log Ratio Function for RF Signals
Remote System Monitoring and Diagnostics
Cellular Base Station, Microwave Link, Radar,
and other Military Applications
RF/IF Power Amplifier (PA) LinearizationPinout
SpecificationsVCC to GND.........................................................-0.3V to +5.25V
Input Power Differential (RFIN_+, RFIN_-)......................+23dBm
Input Power Single Ended (RFIN_+ or RFIN _-)..............+19dBm
All Other Pins to GND...................................-0.3V to (VCC+ 0.3V)
Continuous Power Dissipation (TA= +70°C)
28-Pin, 5mm x 5mm Thin QFN (derate 35.7mW/°C
above +70°C)......................................................................2.8W
Operating Temperature Range............................-40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range..............................-65°C to +150°C
Lead Temperature (soldering, 10s)..................................+300°C
DescriptionThe MAX2016 dual logarithmic detector/controller is a fully integrated system designed for measuring and comparing power, gain/loss, and voltage standing-wave ratio (VSWR) of two incoming RF signals. An internal broadband impedance match on the two differential RF input ports allows for the simultaneous monitoring of sig- nals ranging from low frequency to2.5GHz.
The MAX2016 uses a pair of logarithmic amplifiers to detect and compare the power levels of two RF inputsignals. The device internally subtracts one power level from the other to provide a DC output voltage that is pro- portional to the power difference (gain). The MAX2016 can also measure the return loss/VSWR of an RF signal by monitoring the incident and reflected power levels associated with any given load. A window detector is easily implemented by using the on-chip comparators, OR gate, and 2V reference. This combination of circuitry provides an automatic indication of when the measured gain is outside a programmable range. Alarm monitoringcan thus be implemented for detecting high-VSWRstates (such as open or shorted loads). The MAX2016 operates from a single +2.7V to +5.25V* power supply and is specified over the extended -40°C to +85°C temperature range. The MAX2016 is available in a space-saving, 5mm x 5mm, 28-pin thin QFN.
MAX2016 Data Sheet
