19-3091; Rev 0; 12/03
MAX2825/MAX2826/MAX2827 Evaluation Kits
General Description
The MAX2825/MAX2826/MAX2827 evaluation kits (EV
kits) simplify the testing of the MAX2825/MAX2826/
MAX2827, respectively. The EV kits provide 50Ω SMA
connectors for all RF inputs and outputs, and all base-
band inputs and outputs. Differential-to-single-ended
and single-ended-to-differential line drivers are provid-
ed to convert the differential I/Q baseband inputs and
outputs of the MAX2825/MAX2826/MAX2827 to single-
ended ports.
The EV kits simplify evaluation of the receive and trans-
mit performance in the corresponding 802.11x bands.
Features
o
On-Board Line Drivers and Voltage Reference
o
50Ω SMA on All RF and Baseband Ports
o
PC Control Software Available at
www.maxim-ic.com
o
3-Wire Serial Interface
Evaluate: MAX2825/MAX2826/MAX2827
Ordering Information
PART
MAX2825EVKIT
MAX2826EVKIT
MAX2827EVKIT
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
IC PACKAGE
56 Thin QFN
56 Thin QFN
56 Thin QFN
MAX2825 Component List
DESIGNATION
C1, C8, C14,
C15, C31, C44,
C48, C49, C61
C2, C12, C13
C4
C5, C7, C10,
C11, C17, C18,
C21, C22, C29,
C35, C37, C40,
C42, C43, C45,
C46, C50, C52,
C54, C59, C60
C6, C9, C16,
C19, C20,
C23–C28, C30,
C32, C36, C38,
C41, C56,
C57, C58
C33, C34
C39, C51, C53,
C55
C47
QTY
9
Open
10pF
±0.1pF
0402 capacitors
Murata GJ61555C1H100B
1.0pF
±0.1pF
0402 capacitor
Murata GJ61555C1H1R0B
DESCRIPTION
DESIGNATION
J1, J4,
J5–J9
J2, J3
3
1
J12–J16
J18
JP21, JP22
0.1µF
±10%
0402 capacitors
Murata GRP155R61A104K
L1
L3, L4, L5
L6
R1, R2, R6,
R10, R16, R17,
R22, R27
R3, R7, R18,
R23, R25
2
330pF
±10%
0402 capacitors
Murata GRP155R71H331K
10µF
±10%
tantalum capacitors—
A case
AVX TAJA106K010
100pF
±5%
0402 capacitor
Murata GRP1555C1H101B
R4, R5,
R21, R26
R8, R9, R12,
R13, R28, R29,
R31, R32,
R36, R42
QTY
7
2
5
1
2
1
3
1
DESCRIPTION
SMA edge-mount—round contacts
Johnson 142-0701-801
Open
1 x 2 headers
Sullins PTC36SAAN
DB25, right angle—male
AMP 747238-4
1 x 3 headers
Sullins PTC36SAAN
6.8nH
±5%
0402 inductor
Murata LQG15HN6R8J00
Open
3.9nH
±0.2nH
0402 inductor
Murata LQP15MN3N9C00
75Ω
±1%
0402 resistors
10kΩ
±1%
0402 resistors
49.9Ω
±1%
0402 resistors
21
17
0.01µF
±10%
0402 capacitors
Murata GRP155R71C103K
8
5
4
4
10
0Ω
±5%
0402 resistors
1
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX2825/MAX2826/MAX2827 Evaluation Kits
Evaluate: MAX2825/MAX2826/MAX2827
MAX2827 Component List (continued)
DESIGNATION
L1
L3, L4
L5
L6
R1, R2, R6,
R10, R16, R17,
R22, R27
R3, R7, R18,
R23, R25
R4, R5, R21,
R26
R8, R9, R12,
R13, R28, R29,
R31, R32,
R36, R42
R11, R30, R33,
R35, R38
R14
R15
QTY
1
2
1
1
DESCRIPTION
6.8nH
±5%
0402 inductor
Murata LQG15HN6R8J00
Open
4.3nH
±0.2nH
0402 inductor
Murata LQP15MN4N3C00
3.9nH
±0.2nH
0402 inductor
Murata LQP15MN3N9C00
75Ω
±1%
0402 resistors
DESIGNATION
R19
R20, R24
R34, R37
R39, R40, R41
R43
T1
QTY
1
2
2
3
1
1
1
22
2
2
1
1
1
2
DESCRIPTION
EMI filter
±0.2nH
(0603)
Murata BLM18AG221SN1D
365Ω
±1%
0402 resistors
100kΩ
±1%
0402 resistors
100Ω
±1%
0402 resistors
1kΩ
±1%
0402 resistor
SMD balun
Murata LDB182G4510C-110
SMD balun
Murata LDB215G2505C-001
Test points
Keystone 5000
Differential line drivers
Maxim MAX4447ESE
Line receivers
Maxim MAX4444ESE
LDO
Maxim MAX6061BEUR
Maxim MAX2827ETN
Open
Octal buffer/driver
Texas Instruments
SN74LVTH244ADBR
8
T2
TP1–TP8,
TP10–TP23
U1, U5
U2, U6
5
4
10kΩ
±1%
0402 resistors
49.9Ω
±1%
0402 resistors
10
0Ω
±5%
0402 resistors
U3
5
1
1
Open
267Ω
±1%
0402 resistor
11kΩ
±1%
0402 resistor
U4
U7
U8, U9
Component Suppliers
SUPPLIER
AVX
Digi-Key
Johnson Components
Murata
Texas Instruments
PHONE
843-448-9411
800-344-4539
800-247-8256
770-436-1300
—
FAX
843-448-1943
218-681-3380
507-833-6287
770-436-3030
—
WEBSITE
www.avx.com
www.digikey.com
www.johnsoncomponents.com
www.murata.com
www.ti.com
Quick Start
Each EV kit is fully assembled and factory tested.
Follow the instructions in the
Connections and Setup
section to test the device.
Test Equipment Required
This section lists the recommended test equipment to
verify the operation of the MAX2825/MAX2826/
4
MAX2827. It is intended as a guide only, and substitu-
tions may be possible.
• 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 400mA
of continuous current
_______________________________________________________________________________________
MAX2825/MAX2826/MAX2827 Evaluation Kits
• HP8663A or equivalent low-noise signal source
capable of generating a 20MHz or 40MHz reference
oscillator signal
• Two HP8648 or equivalent signal sources capable of
generating 0dBm up to 6GHz
• 802.11x I/Q waveform generator (optional)
• HP8561E or equivalent RF spectrum analyzer with a
minimum frequency range of 100kHz to 6GHz
• TDS3012 or equivalent oscilloscope with 200MHz
bandwidth
• IBM PC or compatible with Windows95/98/2000/NT
4.0, or later operating system and an available paral-
lel port
• Male-to-female 25-pin parallel cable, straight through
3) Set the register setting to the default values listed in
the MAX2825/MAX2826/MAX2827 data sheet. 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). Set the
RX gain to maximum using either the slider bar or
the control bits.
4) Connect the spectrum analyzer to either RXBBI or
RXBBQ. Set the center frequency to 5MHz with a
10MHz span.
5) Turn on the RF signal source. The output at 5MHz
should be approximately -4dBm (802.11g) or -5dBm
(802.11a).
Transmit Mode
To evaluate the devices in transmit mode:
1) Set the TXON jumper (JP21) to the On position and
the RXON jumper (JP22) to the Off position.
2) Connect a 2MHz I/Q signal to TXBBQ and TXBBI.
Set the input amplitude of each channel to
100mV
RMS
.
3) Set the register setting to the default values listed in
the MAX2825/MAX2826/MAX2827 data sheet. Use
the software to select between 802.11g and
802.11a modes. In the program, set the frequency
to either 2437MHz (802.11g) or 5.25GHz (802.11a).
Set the TX gain to maximum using either the slider
bar or the control bits.
4) Connect the spectrum analyzer to either TXRFL
(802.11g, J1) or TXRFH (802.11a, J2).
5) Turn on the baseband signal sources. The output at
RF should be approximately -2dBm (802.11g) or
-4dBm (802.11a).
Evaluate: MAX2825/MAX2826/MAX2827
Connections and Setup
This section provides step-by-step instructions for get-
ting the EV kit up and running in all modes:
1) Install and run the MAX2825/MAX2826/MAX2827
control software.
2) To control the EV kit through the 3-wire interface,
connect the male-to-female 25-pin parallel cable
between the PC and EV kit.
3) 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).
4) 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 (J21).
5) Connect the low-noise signal source to FREF (J9).
6) Turn on the +5V and -5V power supplies, followed
by the +2.7V power supply. Set the low-noise signal
source to 20MHz and 2dBm. Enable the signal
source. The lock indicator should be green.
Receive Mode
To evaluate the devices in receive mode:
1) Set the RXON jumper (JP22) to the On position and
the TXON jumper (JP21) to the Off position.
2) Connect the RF signal source to either RXRFL
(802.11g, J4) or RXRFH (802.11a, J3). Set the RF fre-
quency to 2437MHz (802.11g) or 5.25GHz (802.11a).
Set the signal power to -100dBm.
Layout Considerations
The MAX2825/MAX2826/MAX2827 EV kits can serve as
guides for board layout. Keep PC board trace lengths
as short as possible to minimize parasitic inductance.
Also, keep decoupling capacitors as close to the IC as
possible with a direct connection to the ground plane.
Please refer to the MAX2825/MAX2826/MAX2827 data
sheet for more detailed information. Gerber files for
these EV kits can be requested at www.maxim-ic.com.
Windows is a registered trademark of Microsoft.
_______________________________________________________________________________________
5
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