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MAX2015 Evaluation Kit
1.35VDC
(VOLTMETER)
100MHz -24dBm
J2
SMA
MAX2015 EV KIT
VOUT
3.30VDC
6dB
J1
SMA
RF_IN
TP2
GND
TP1
VCC
J3
SMA
VSET
J4
SMA
PWDN
3.30VDC
(VOLTMETER)
17.0mA
(AMMETER)
Figure 1. MAX2015 EV Kit Test Setup Diagram
4) Calibrate the signal generator output (f = 100MHz)
over the desired power range.
Note: Some power meters may be limited in terms
of their dynamic range.
5) Disable the RF signal generator output power.
Disconnect the power meter from the attenuator
pad and connect this pad output to the RF_IN
SMA on the EV kit.
6) Connect the VOUT SMA to a voltmeter through the
appropriate adapters. Enable the DC power sup-
ply. The DC current of the EV kit should be
approximately 17mA.
7) Enable the output power of the RF signal generator.
8) Using the calibration results from step 4, set the
generator output at the level that produces -30dBm
into RF_IN.
9) Verify that an output voltage of approximately
1.35V is measured on the voltmeter.
10) Adjust the signal-generator power level up and
down to see a corresponding change in VOUT.
Detailed Description
The MAX2015 EV kit is a fully assembled and tested sur-
face-mount circuit board that evaluates the MAX2015
RF power detector/controller. The RF input utilizes a
50 Ω SMA connector for convenient connection to test
equipment.
Detector Mode
The MAX2015 EV kit is assembled with a 0 Ω resistor for
R1. This sets the slope of the output signal to approxi-
mately 19mV/dB (RF = 100MHz). To increase the slope of
the output signal, increase the value of R1. For example, if
a 4.7k Ω resistor is used, the slope increases to approxi-
mately 21.7mV/dB. Setting the slope too high causes the
output of the log amp to be voltage limited at high RF
power levels, thus reducing dynamic range. For more
information, refer to the Applications Information section in
the MAX2015 data sheet.
2
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