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MAX2016ETI+ |MAX2016ETIMAXIMN/a65avaiLF-to-2.5GHz Dual Logarithmic Detector/Controller for Power, Gain, and VSWR Measurements
MAX2016ETI+T |MAX2016ETITMAXIMN/a5000avaiLF-to-2.5GHz Dual Logarithmic Detector/Controller for Power, Gain, and VSWR Measurements


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MAX2016ETI+-MAX2016ETI+T
LF-to-2.5GHz Dual Logarithmic Detector/Controller for Power, Gain, and VSWR Measurements
General Description
The 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 to 2.5GHz.
The MAX2016 uses a pair of logarithmic amplifiers to
detect and compare the power levels of two RF input
signals. 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 monitoring
can thus be implemented for detecting high-VSWR
states (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.
Applications

Return 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) Linearization
Features
Complete Gain and VSWR Detector/ControllerDual-Channel RF Power Detector/ControllerLow-Frequency to 2.5GHz Frequency RangeExceptional Accuracy Over TemperatureHigh 80dB Dynamic Range2.7V to 5.25V Supply Voltage Range*Internal 2V ReferenceScaling Stable Over Supply and Temperature
Variations
Controller Mode with Error OutputAvailable in 5mm x 5mm, 28-Pin Thin QFN
Package

*See Power-Supply Connectionsection.
MAX2016
LF-to-2.5GHz Dual Logarithmic Detector/
Controller for Power, Gain, and VSWR Measurements

FA11
VCC2
RFINA+3
RFINA-4
GND5
COUTH6
CSETH7
FB121
VCC20
RFINB+19
RFINB-18
GND17
COUTL16
CSETL15
COR
SETD
OUTD
FV2
FV1
OUT
SET
REF
SETB
OUTB
FB2
MAX2016
Pin Configuration
Ordering Information

19-3404; Rev 1; 10/06
EVALUATION KIT
AVAILABLE
PARTTEMP RANGEPIN-
PACKAGE
PKG
CODE

MAX2016ETI-40°C to +85°C28 Thi n QFN - E P *,ul kT2855-3
MAX2016ETI-T-40°C to +85°C28 Thi n QFN - E P *,
T/RT2855-3
MAX2016ETI+D-40°C to +85°C28 Thi n QFN - E P *,ead fr ee, b ul kT2855-3
MAX2016ETI+TD-40°C to +85°C28 Thi n QFN - E P *,ead fr ee, T/RT2855-3
*EP = Exposed pad.
+Indicates lead-free package.= Dry pack.
Typical Application Circuit appears at end of data sheet.
MAX2016
LF-to-2.5GHz Dual Logarithmic Detector/
Controller for Power, Gain, and VSWR Measurements
ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCCto 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
DC ELECTRICAL CHARACTERISTICS

(VCC= +2.7V to +3.6V, R1= R2= R3= 0Ω, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VCC= +3.3V,
CSETL = CSETH = VCC, 50ΩRF system, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
POWER SUPPLY
R6 = 0Ω2.73.33.6Supply VoltageVSR6 = 37.4Ω4.7555.25V
Total Supply CurrentICC4355mA
Measured in each pin 2 and pin 2016
Measured in pin 92Supply Current
Measured in pin 129
INPUT INTERFACE

Input ImpedanceDifferential impedance at RFINA and RFINB50Ω
Resistance at SETD20Input ResistanceRResistance at SETA and SETB40kΩ
DETECTOR OUTPUT

Source CurrentMeasured at OUTA, OUTB, and OUTD4mA
Sink CurrentMeasured at OUTA, OUTB, and OUTD0.45mA
Minimum Output VoltageMeasured at OUTA, OUTB, and OUTD0.5V
Maximum Output VoltageMeasured at OUTA, OUTB, and OUTD1.8V
Difference Output VOUTDPRFINA = PRFINB = -30dBm1V
OUTD Accuracy±12mV
COMPARATORS

Output High VoltageVOHRLOAD ≥ 10kΩVCC -
10mVV
Output Low VoltageVOLRLOAD ≥ 10kΩ10mV
Input VoltageMeasured at CSETL and CSETHGND to
VCCV
Input Bias CurrentCSETL and CSETH1nA
REFERENCE

Output Voltage on Pin 25RLOAD ≥ 2kΩ2V
Load RegulationSource 2mA-5mV
MAX2016
LF-to-2.5GHz Dual Logarithmic Detector/
Controller for Power, Gain, and VSWR Measurements
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

RF Input Frequency RangefRFAC-coupled input2.5GHz
Return LossS110.1GHz to 3GHz20dB
Large-Signal Response TimePRFIN = no signal to 0dBm, ±0.5dB settling
accuracy100ns
RSSI MODE—0.1GHz

RF Input Power Range(Note 2)-70 to
+10dBm
±3dB Dynamic RangeTA = -20°C to +85°C (Note 3)80dB
Range Center-32dBm
TA = +25°C to +85°C+0.0083Temperature SensitivityPRFINA = PRFINB =
-32dBmTA = +25°C to -20°C-0.0083dB/°C
Slope(Note 4)19mV/dB
Typical Slope VariationTA = -20°C to +85°C-4µV/°C
Intercept(Note 5)-100dBm
Typical Intercept VariationTA = -20°C to +85°C0.03dBm/°C
RSSI MODE—0.9GHz

RF Input Power Range(Note 2)-70 to
+10dBm
±3dB Dynamic RangeTA = -20°C to +85°C (Note 3)80dB
Range Center-30dBm
TA = +25°C to +85°C+0.0083Temperature SensitivityPRFINA = PRFINB =
-30dBmTA = +25°C to -20°C-0.0083dB/°C
Slope(Note 4)18.1mV/dB
Typical Slope VariationTA = -20°C to +85°C-4µV/°C
Intercept(Note 5)-97dBm
Typical Intercept VariationTA = -20°C to +85°C0.02dBm/°C
RSSI MODE—1.9GHz

RF Input Power Range(Note 2)-55 to
+12dBm
±3dB Dynamic RangeTA = -20°C to +85°C (Note 3)67dB
Range Center-27dBm
TA = +25°C to +85°C+0.0125Temperature SensitivityPRFINA = PRFINB =
-27dBmTA = +25°C to -20°C-0.0125dB/°C
Slope(Note 4)18mV/dB
Typical Slope VariationTA = -20°C to +85°C-4.8µV/°C
Intercept(Note 5)-88dBm
Typical Intercept VariationTA = -20°C to +85°C0.03dBm/°C
AC ELECTRICAL CHARACTERISTICS—OUTA AND OUTB

(Typical Application Circuit, VCC= +2.7V to +3.3V, R1= R2= R3= 0Ω, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VCC= 3.3V, CSETL = CSETH = VCC, TA= +25°C, unless otherwise noted.) (Note 1)
MAX2016
LF-to-2.5GHz Dual Logarithmic Detector/
Controller for Power, Gain, and VSWR Measurements
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
RSSI MODE—2.17GHz

RF Input Power Range(Note 2)-52 to
+12dBm
±3dB Dynamic RangeTA = -20°C to +85°C (Note 3)64dB
Range Center-25dBm
TA = +25°C to +85°C+0.0135Temperature SensitivityPRFINA = PRFINB =
-25dBmTA = +25°C to -20°C-0.0135dB/°C
Slope(Note 4)17.8mV/dB
Typical Slope VariationTA = -20°C to +85°C-8µV/°C
Intercept(Note 5)-81dBm
Typical Intercept VariationTA = -20°C to +85°C0.03dBm/°C
RSSI MODE—2.5GHz

RF Input Power Range(Note 2)-45 todBm
±3dB Dynamic RangeTA = -20°C to +85°C (Note 3)52dB
Range Center-23dBm
TA = +25°C to +85°C+0.0167Temperature SensitivityPRFINA = PRFINB =
-23dBmTA = +25°C to -20°C-0.0167dB/°C
Slope(Note 4)17.8mV/dB
Typical Slope VariationTA = -20°C to +85°C-8µV/°C
Intercept(Note 5)-80dBm
Typical Intercept VariationTA = -20°C to +85°C0.03dBm/°C
AC ELECTRICAL CHARACTERISTICS—OUTA AND OUTB (continued)

(Typical Application Circuit, VCC= +2.7V to +3.3V, R1= R2= R3= 0Ω, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VCC= 3.3V, CSETL = CSETH = VCC, TA= +25°C, unless otherwise noted.) (Note 1)
AC ELECTRICAL CHARACTERISTICS—OUTD

(Typical Application Circuit, VCC= +2.7V to +3.3V, R1= R2= R3= 0Ω, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VCC= 3.3V, CSETL = CSETH = VCC, TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

OUTD Center PointPRFINA = PRFINB1V
Small-Signal Envelope BandwidthNo external capacitor on pins FV1 and FV222MHz
Small-Signal Settling Time
Any 8dB change on the inputs,
no external capacitor on FV1 and FV2,
settling accuracy is ±0.5dB
150ns
Large-Signal Settling Time
Any 30dB change on the inputs, no external
capacitor on pins FV1 and FV2, settling
accuracy is ±0.5dB
300ns
Small-Signal Rise and Fall TimeAny 8dB step, no external capacitor on pins
FV1 and FV215ns
MAX2016
LF-to-2.5GHz Dual Logarithmic Detector/
Controller for Power, Gain, and VSWR Measurements
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS

Large-Signal Rise and Fall TimeAny 30dB step, no external capacitor on
pins FV1 and FV235ns
0.1GHzPRFINB = -32dBm80
0.9GHzPRFINB = -30dBm75
1.9GHzPRFINB = -27dBm60
2.17GHzPRFINB = -25dBm55
±1dB Dynamic Range
2.5GHzPRFINB = -23dBm50
SlopefRF = 0.1GHz to 2.5GHz (A-B)-25mV/dB
OUTD Voltage DeviationPRFINA = PRFINB = -30dBm, TA =
-20°C to +85°C±0.25dB
0.1GHz, PRFINB =
-32dBm80
0.9GHz, PRFINB =
-30dBm70
1.9GHz, PRFINB =
-27dBm55
2.17GHz, PRFINB =
-25dBm50
±1dB Dynamic Range over
Temperature Relative to Best-Fit
Curve at +25°C
PRFINA is swept ;
TA = -20°C to
+85°C
2.5GHz, PRFINB =
-23dBm45
Gain Measurement BalancePRFINB = PRFINB = -50dBm to -5dBm, fRF =
1.9GHz0.2dB
0.9GHz90
1.9GHz65Channel Isolation
2.5GHz55
AC ELECTRICAL CHARACTERISTICS—OUTD (continued)

(Typical Application Circuit, VCC= +2.7V to +3.3V, R1= R2= R3= 0Ω, TA= -40°C to +85°C, unless otherwise noted. Typical values
are at VCC= 3.3V, CSETL = CSETH = VCC, TA= +25°C, unless otherwise noted.) (Note 1)
Note 1:
The MAX2016 is tested at TA= +25°C and is guaranteed by design for TA= -40°C to +85°C.
Note 2:
Typical minimum and maximum range of the detector at the stated frequency.
Note 3:
Dynamic range refers to the range over which the error remains within the ±3dB range.
Note 4:
The slope is the variation of the output voltage per change in input power. It is calculated by fitting a root-mean-square
straight line to the data indicated by the RF input power range.
Note 5:
The intercept is an extrapolated value that corresponds to the output power for which the output voltage is zero. It is calcu-
lated by fitting a root-mean-square straight line to the data.
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