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MAX2741EVKIT

MAX2741 Evaluation Kit

Maxim Integrated 

MAX2741 Evaluation Kit

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

U4

Hex buffers/drivers with open drain,

2 14-pin SOP

Texas Instruments SN74LV07ADR

Ultra-low-noise, high PSRR,

1 low-dropout linear regulator, SC70

Maxim MAX8510EXK29-T

Y1

1 19.2MHz voltage-controlled TCXO

KSS/KYOCERA VC-TCXO-208C5-19P2

Detailed Description

Component Suppliers

SUPPLIER

PHONE

FAX

Alpha

360-647-2360

260-671-4936

ATC

Coilcraft

949-583-9119

847-639-6400

949-583-9213

847-639-1469

Kayama

219-489-1533

219-489-2261

Murata

770-436-1300

770-436-3030

Note: Indicate you are using the MAX2741 when contacting

these manufacturers.

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.

Table 1. Jumper Functions

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.

JP1

2-3 Shut down the MAX2741.

N.C. Control the MAX2741 externally.

2 _______________________________________________________________________________________

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