The MAX2828/MAX2829 evaluation kits (EV kits) simplify
the testing of the MAX2828/MAX2829. The EV kits provide
50Ω SMA connectors for all RF and baseband inputs and
outputs. Differential-to-single-ended and single-ended-to-
differential line drivers are provided to convert the differential
I/Q baseband inputs and outputs of the MAX2828/MAX2829
to single-ended ports.
The EV kits simplify evaluation of the receive and transmit
performance in the corresponding 802.11x bands.
● HP 8561E or equivalent RF spectrum analyzer with a
minimum 100kHz to 6GHz frequency range
● TDS3012 or equivalent oscilloscope with 200MHz
bandwidth
● PC, laptop, or tablet with Microsoft Windows XP
®
,
Windows 7, 8 OS and a spare USB port
● USB-A male to USB-B male cable
Connections and Setup
Features
This section provides step-by-step instructions for getting
the EV kits up and running in all modes (see
Figure 1
for
EV kit connections):
1) Connect the PC to the INTF3000 interface board using
the USB cable. On INTF3000, remove jumper JU1
and connect a DC supply set to 2.7V to the VPULL
connector. Connect the 25-pin connector of the
INTF3000 (J4) directly to the 25-pin connector on the
EV kit (J18).
2) With the power supply turned off, connect a +2.7V
power supply to the header labeled VCC (J13). Connect
the power-supply ground to the header labeled GND
(J12).
3) With the power supply turned off, connect a +5V power
supply to the header labeled +5V (J16), and a -5V
power supply to the header labeled -5V (J14). Connect
the power-supply ground to the header labeled GND
(J15).
4) Connect the low-noise signal source to FREF (J9).
5) Turn on the +5V and -5V power supplies, followed
by the +2.7V power supply. Set the low-noise signal
source to 40MHz and 2dBm. Enable the signal source.
The lock indicator should be green.
6) Install and run the MAX2828/MAX2829 control
software
HERE.
● On-Board Line Drivers and Voltage Reference
● 50Ω SMA and BNC Connectors on All RF and
Baseband Ports
● PC Control Software Available at
www.maximintegrated.com
● 3-Wire Serial Interface
Quick Start
Each EV kit is fully assembled and factory tested. Follow
the instructions in the
Connections and Setup
section to
test the devices.
Test Equipment Required
This section lists the recommended test equipment to
verify the operation of the MAX2828/MAX2829. It is
intended as a guide only, and substitutions may be
possible.
● MAX2828/MAX2829 EV Kit
● INTF3000+ Interface Board
● DC supply capable of delivering +5.0V and 200mA of
continuous current
● DC supply capable of delivering -5.0V and 200mA of
continuous current
● DC supply capable of delivering +3.6V and 300mA of
continuous current
● HP 8663A or equivalent low-noise signal source
capable of generating a 20MHz or 40MHz reference
oscillator signal
● One HP 8648s or equivalent signal sources capable
of generating 0dBm CW up to 6GHz
● 802.11x CW I/Q waveform generator (optional)
Windows and Windows XP are registered trademarks and
registered service marks of Microsoft Corporation.
19-3470; Rev 4; 1/16
MAX2828/MAX2829
Evaluation Kits
Receive Mode
To evaluate the devices in receive mode with CW signal:
1) Set the RXON jumper (JP22) to the ON position and the
TXON jumper (JP21) to the OFF position. The supply
current should be approximately 125mA.
2) Connect the RF signal source to either RXRFL (J4)
for 802.11g frequencies or RXRFH (J3) for 802.11a
frequencies. Set the RF frequency to 2437MHz or
5.25GHz. Set the signal power to -100dBm.
3) Set the register setting to the default values listed
in the MAX2828/MAX2829 data sheet by selecting
“Evaluation Defaults” from the Setup dropdown menu.
4) Use the software to select between 802.11g and
802.11a modes. In the program, set the frequency to
either 2442MHz (802.11g) or 5.255GHz (802.11a).
5) Set the RX gain to maximum using either the slider bar
or the control bits.
6) Connect the spectrum analyzer to either RXBBI or
RXBBQ. Set the center frequency to 5MHz with a
1MHz span. Other recommended spectrum analyzer
settings are: Res BW of 1kHz and Ref Level of 10dB.
7) Turn on the RF signal source. The output at 5MHz
should be approximately -6dBm (for 802.11g frequencies)
or -2dBm (for 802.11a frequencies).
Evaluate: MAX2828/MAX2829
Note:
CW signals can be replaced by modulated
802.11a/b/g signals.
Table 1. Jumper Functions
JUMPER
JP21
STATE
ON
FUNCTION
Enables transmit mode. Placing the
jumper toward the DB25 connector
(J18) puts the device in transmit
mode.
Enables receive mode. Placing the
jumper toward the DB25 connector
(J18) puts the device in receive
mode.
JP22
ON
Table 2. Test Points
TP
TP1
TP2
TP3
TP4
TP6
TP7
TP10
TP11
TP12
TP13
TP14
TP15
TP16
TP17
TP18
TP19
TP20
TP21
TP22
TP23
DESCRIPTION
This pin allows for direct injection or monitoring of
pin TXBBI+.
This pin allows for direct injection or monitoring of
pin TXBBI-.
This pin allows for direct injection or monitoring of
pin RXBBI+.
This pin allows for direct injection or monitoring of
pin RXBBI-.
This pin allows for direct injection or monitoring of
pin TXBBQ+.
This pin allows for direct injection or monitoring of
pin TXBBQ-.
This pin allows for monitoring of the VCO tune
voltage.
This pin allows for direct injection or monitoring of
pin RXBBQ+.
This pin allows for direct injection or monitoring of
pin RXBBQ-.
This pin allows for monitoring of pin B3.
This pin allows for monitoring of pin B4.
This pin allows for monitoring of pin B2.
This pin allows for monitoring of pin B5.
This pin allows for monitoring of pin
SHDN.
This pin allows for monitoring of pin B1.
This pin allows for monitoring of pin B6.
This pin allows for monitoring of pin TXENA.
This pin allows for monitoring of pin RXENA.
This pin allows for monitoring of pin RXHP.
This pin allows for monitoring of pin B7.
Transmit Mode
To evaluate the devices in transmit mode with CW signal:
1) Set the TXON jumper (JP21) to the ON position and
the RXON jumper (JP22) to the OFF position. The
supply current should be approximately 130mA.
2) Connect a 1MHz sinusoid to TXBBI and a 1MHz sinusoid
with a 90° phase shift (or a cosine) to TXBBQ. Set the
input amplitude of each channel to 100mV
RMS
.
3) Set the register setting to the default values listed
in the MAX2828/MAX2829 data sheet by selecting
“Evaluation Defaults” from the Setup dropdown menu.
4) Use the software to select between 802.11g and
802.11a modes. In the program, set the frequency to
either 2437MHz or 5.25GHz.
5) Set the TX gain to maximum using either the slider bar
or the control bits. Keep the TX Baseband gain to its
default value.
6) Connect the spectrum analyzer to either TXRFL (J1)
(for 802.11g) or TXRFH (J2) (for 802.11a). Set the
center frequency to either 2438MHz or 5251MHz and
span to 1MHz. Other recommended spectrum analyzer
settings are: Res BW of 3kHz, attenuation of 6dB, and
Ref Level of 0dB.
7) Turn on the baseband signal sources. The output at
2438MHz should be approximately -3dBm (for 802.11g
frequencies) or the output at 5251MHz should be
approximately -5.5dBm (for 802.11a frequencies).
www.maximintegrated.com
Maxim Integrated │ 2
MAX2828/MAX2829
Evaluation Kits
Layout Considerations
Evaluate: MAX2828/MAX2829
Power-Supply Layout
The EV kits can be used as a starting point for layout. For
best performance, take into consideration grounding and
RF, baseband, and power-supply routing. Make connections
from vias to the ground plane as short as possible. On the
high-impedance ports, keep traces short to minimize shunt
capacitance. EV kit Gerber files can be requested at
www.
maximintegrated.com.
To minimize coupling between different sections of the
IC, a star power-supply routing configuration with a large
decoupling capacitor at a central V
CC
node is
recommended. The V
CC
traces branch out from this node,
each going to a separate V
CC
node in the circuit. Place a
bypass capacitor as close to each supply pin as possible.
This arrangement provides local decoupling at each V
CC
pin. Use at least one throughput per bypass capacitor for
a low-inductance ground connection. Do not share the
capacitor ground vias with any other branch.
Matching Network Layout
The layout of a matching network is very sensitive to
parasitic circuit elements. To minimize parasitic inductance,
keep all traces short and place components as close to the
IC as possible.
Figure 1. MAX2828/MAX2829 EV Kit Connections
www.maximintegrated.com
Maxim Integrated │ 3
MAX2828/MAX2829
Evaluation Kits
Table 3. I/O Connectors
SIGNAL
J1
J2
J3
J4
J5
J6
J7
J8
J12
J13
J14
J15
J16
J18
Evaluate: MAX2828/MAX2829
DESCRIPTION
802.11b/g Transmitter Output (2.4GHz to 2.5GHz)
802.11a Transmitter Output (4.9GHz to 5.875GHz)
802.11a Receiver Input (4.9GHz to 5.875GHz)
802.11b/g Receiver Input (2.4GHz to 2.5GHz)
Single-Ended Transmitter Baseband I Input
Single-Ended Receiver Baseband I Output
Single-Ended Transmitter Baseband Q Input
Single-Ended Receiver Baseband Q Output
Ground
+2.7V Supply Input
+5V Supply Input
Ground
-5V Supply Input
SPI Interface Connector
Component Suppliers
SUPPLIER
AVX North America
Digi-Key Corp.
Johnson Components
Murata Americas
Texas Instruments Inc.
www.avx.com
www.digikey.com
www.johnsoncomponents.com
www.murata.com
www.ti.com
WEBSITE
Note:
Indicate that you are using the MAX2828/MAX2829 when contacting these component suppliers.
Component Information, PCB Layout,
and Schematic
●
MAX2828/MAX2829 EV BOM
●
MAX2828/MAX2829 EV PCB Layout
●
MAX2828/MAX2829 EV Schematic
Ordering Information
PART
MAX2828EVKIT
MAX2829EVKIT
TYPE
EV Kit
EV Kit
See the following links for component information, PCB
layout diagrams, and schematic.
www.maximintegrated.com
Maxim Integrated │ 4
MAX2828/MAX2829
Evaluation Kits
Revision History
REVISION
NUMBER
0
1
2
3
4
REVISION
DATE
10/04
11/14
8/15
12/15
1/16
Initial release
Updated
Quick Start
section
Updated the
Quick Start
section, added Figure 1
DESCRIPTION
Evaluate: MAX2828/MAX2829
PAGES
CHANGED
—
2
2–4
1–5
1, 2, 4
EV kit updated to reflect conversion to INTF3000 interface board/USB cable
from parallel cable
Syntax errors corrected
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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