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MAX2741 Datasheet(PDF) 2 Page - Maxim Integrated Products

Part # MAX2741
Description  Evaluation Kit
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX2741 Datasheet(HTML) 2 Page - Maxim Integrated Products

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Detailed Description
The MAX2741 EV kit simplifies evaluation of the MAX2741
GPS RF receiver front-end IC. It enables testing of the
device’s RF performance and requires no additional sup-
port circuitry. The EV kit’s signal inputs and outputs use
SMA connectors to facilitate the connection of RF test
equipment. In this section, detailed descriptions of the EV
kit board as well as the control interface/software are
given to facilitate better evaluation of the IC.
Input/Output Ports
The MAX2741 EV kit has one RF input port, two IF output
ports, one IF input port, one reference clock input port,
and a GPS IF output port:
RFIN (J2) is the GPS RF signal input port with SMA
connector
1st IFOUT is the output of the 1st stage
2nd IFOUT is the output of the 2nd stage
2nd IFIN is the input to the 2nd stage
REFCLK is the external reference clock input to the
phase-locked loop
GPSIF is the digital output after the 3-bit analog-to-
digital converter
Measurement Configuration
Important Notice: The EV kit board provides all neces-
sary components to test the entire tuner as one receiver
(RF input to the 2nd IF analog output) or to indepen-
dently test the 1st stage (RF input to 1st IF output) and
the 2nd stage (the 2nd IF input to the 2nd IF output). All
the required passive components are provided and
installed on the board.
To test the entire tuner as one receiver, the user must
disconnect the connections to the 1st IF output SMA
and the 1st IF input SMA by removing C35, C36, C37,
and C38.
To test the 1st stage and the 2nd stage independently,
the user must disconnect the connections to the pas-
sive, interstage IF filter by removing R12, C39, C40,
C41, C42, C44.
Jumper Description
There are eight jumpers on the MAX2741 EV kit. See
Table 1.
MAX2741 Evaluation Kit
2
_______________________________________________________________________________________
SUPPLIER
PHONE
FAX
Alpha
360-647-2360
260-671-4936
ATC
949-583-9119
949-583-9213
Coilcraft
847-639-6400
847-639-1469
Kayama
219-489-1533
219-489-2261
Murata
770-436-1300
770-436-3030
Component Suppliers
Note: Indicate you are using the MAX2741 when contacting
these manufacturers.
JUMPER
STATE
FUNCTION
1-2
Connect the VCC6 pin supply to VCC.
J3
N.C.
Connect the VCC6 pin to an external supply.
1-2
Connect the VCC1 pin to VCC.
J4
N.C.
Connect the VCC1 pin to an external supply.
1-2
Connect the VCC2 pin to VCC.
J5
N.C.
Connect the VCC2 pin to an external supply.
1-2
Connect the VCC3 pin to VCC.
J6
N.C.
Connect the VCC3 pin to an external supply.
1-2
Connect the VCC4 pin to VCC.
J7
N.C.
Connect the VCC4 pin to an external supply.
1-2
Connect the VCC5 pin to VCC.
J8
N.C.
Connect the VCC5 pin to an external supply.
1-2
Connect to VCC.
J9
N.C.
Connect an external supply.
1-2
Normal operation.
2-3
Shut down the MAX2741.
JP1
N.C.
Control the MAX2741 externally.
Table 1. Jumper Functions
Component List (continued)
DESIGNATION QTY
DESCRIPTION
T1, T2, T3
3
Balun transformers, surface-mount
TOKO 617DB-1675
TP1, TP2
0
Test points, not installed
U1
1
GPS downconverter
Maxim MAX2741ETI
U2, U3
2
Hex buffers/drivers with open drain,
14-pin SOP
Texas Instruments SN74LV07ADR
U4
1
Ultra-low-noise, high PSRR,
low-dropout linear regulator, SC70
Maxim MAX8510EXK29-T
Y1
1
19.2MHz voltage-controlled TCXO
KSS/KYOCERA VC-TCXO-208C5-19P2


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