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PDF MAX2827 Data sheet ( Hoja de datos )
| Número de pieza | MAX2827 | |
| Descripción | MAX2825/MAX2826/MAX2827 Evaluation Kits | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX2827 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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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.
DESIGNATION QTY
C1, C8, C14,
C15, C31, C44,
C48, C49, C61
9 Open
DESCRIPTION
C2, C12, C13
C4
3
10pF ±0.1pF 0402 capacitors
Murata GJ61555C1H100B
1
1.0pF ±0.1pF 0402 capacitor
Murata GJ61555C1H1R0B
C5, C7, C10,
C11, C17, C18,
C21, C22, C29,
C35, C37, C40,
C42, C43, C45,
21
0.1µF ±10% 0402 capacitors
Murata GRP155R61A104K
C46, C50, C52,
C54, C59, C60
C6, C9, C16,
C19, C20,
C23–C28, C30, 17 0.01µF ±10% 0402 capacitors
C32, C36, C38,
Murata GRP155R71C103K
C41, C56,
C57, C58
C33, C34
2 330pF ±10% 0402 capacitors
Murata GRP155R71H331K
C39, C51, C53,
C55
10µF ±10% tantalum capacitors—
4 A case
AVX TAJA106K010
C47
1
100pF ±5% 0402 capacitor
Murata GRP1555C1H101B
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
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 QTY
DESCRIPTION
J1, J4,
J5–J9
7
SMA edge-mount—round contacts
Johnson 142-0701-801
J2, J3
2 Open
J12–J16
5 1 x 2 headers
Sullins PTC36SAAN
J18 1 DB25, right angle—male
AMP 747238-4
JP21, JP22
2
1 x 3 headers
Sullins PTC36SAAN
L1
1
6.8nH ±5% 0402 inductor
Murata LQG15HN6R8J00
L3, L4, L5
3 Open
L6 1 3.9nH ±0.2nH 0402 inductor
Murata LQP15MN3N9C00
R1, R2, R6,
R10, R16, R17,
R22, R27
8 75Ω ±1% 0402 resistors
R3, R7, R18,
R23, R25
5 10kΩ ±1% 0402 resistors
R4, R5,
R21, R26
4 49.9Ω ±1% 0402 resistors
R8, R9, R12,
R13, R28, R29,
R31, R32,
R36, R42
10 0Ω ±5% 0402 resistors
________________________________________________________________ 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.
1 page  
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
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.
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
100mVRMS.
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).
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
5 Page 
MAX2825/MAX2826/MAX2827 Evaluation Kits
1.0"
Figure 6. MAX2825/MAX2826/MAX2827 EV Kit PC Board Layout—Solder Side
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX2827.PDF ] | |
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