Evaluates: MAX2838
MAX2838 Evaluation Kit
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3
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Analog Device
800-262-5643
www.analog.com
Digi-Key Corp.
800-344-4539
www.digikey.com
Keystone Electronics Corp.
800-221-5510
www.keyelco.com
Murata Mfg. Co., Ltd.
770-436-1300
www.murata-northamerica.com
Note:
Indicate that you are using the MAX2838 when contacting these component suppliers.
Quick Start
Recommended Test Equipment
This section lists the recommended test equipment to
verify the operation of the MAX2838. It is intended as a
guide only and substitutions may be possible:
• DC supply capable of deli5V and 250mA of
continuous current
• DC supply capable of delivering -5V and 250mA of
continuous current
• DC supply capable of deli3.3V and 250mA
of continuous current
• One HP 8648 or equivalent signal source capable of
generating 0dBm up to 3.9GHz
• Two HP or equivalent arbitrary waveform generators
• One HP 8561E or equivalent RF spectrum analyzer
with a minimum 100kHz to 3GHz frequency range
• One TDS3012 or equivalent oscilloscope with
200MHz bandwidth
• One HP 437B power meter and power head
• A user-supplied Windows
®
95/98/2000/XP (or later)
PC with an available parallel port
• One female-to-male 25-pin parallel straight-through
cable
Connections and Setup
The MAX2838 EV kit is fully assembled and factory test-
ed. Follow the instructions below to test the devices.
This section provides step-by-step instructions for get-
ting the EV kit up and running in all modes:
1) Install and run the MAX2838 control software.
Select MAX2838 for MAXIM IC type under Options.
2) To control the EV kit through the 4-wire interface,
connect the female-to-male 25-pin parallel straight-
through cable between the PC and the EV kit.
3) With the power supply turned off, connect the +3.3V
power supply to VBAT and VCCAUX. Connect the
power-supply ground to the header labeled GND.
4) With the power supply turned off, connect the +5V
power supply to the +5V pin and the -5V power
supply to the -5V pin. Connect the power-supply
ground to the header labeled GND. Connect all the
power-supply grounds together.
5) Set the RXBBBUF jumper across pins 1-2 to enable
the Rx baseband buffers.
6) Turn on the +3.3V power supply, and the +5V and
-5V power supplies.
7) In the Enables panel of the software, check the
EN_SPI box to enable the 3-wire interface.
8) Adjust the Tx common-mode potentiometer (R36)
until measuring 0.9V common-mode voltage at the
VCM test point.
9) In the Registers panel of the software, set ENABLE
to 0 and RXTX to 1 to put the IC into standby mode.
10) In the Synth panel of the software, set the LO fre-
quency to 3600MHz.
Receive Mode
1) Use the power meter to calibrate the RF signal gen-
erator to deliver -98dBm at 3601MHz. After calibra-
tion, turn the RF signal generator off, disconnect it
from the power meter, and connect it to the RXRF
port of the MAX2838 EV kit.
2) Connect either the I or the Q baseband output to a
spectrum analyzer. Set the center frequency to be
1MHz and the span to be 1MHz.
3) In the Registers panel of the software, enter the rec-
ommended register setting shown in Figure 1 for
operating the MAX2838 in steady-state receive
mode bench measurement. This setup fixes the
VGA highpass corner at 1kHz.
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