Maxim Integrated │ 2

www.maximintegrated.com

Evaluates: MAX3521

MAX3521 Evaluation Kit

Quick Start

Test Equipment Required

●

Power supply capable of supplying at least 750mA

at +5V

●

Power supply capable of supplying at least 5mA at

+3.3V (sets logic level on INTF3000+ interface board)

●

RF signal generator capable of delivering at least

-10dBm of output power at 40MHz frequency

(e.g., HP8482A or equivalent)

●

RF spectrum analyzer capable of covering the

operating frequency range of the device

●

Windows® PC with a spare USB port

●

USB cables

●

50Ω SMA cables

●

(Optional) Multichannel digital oscilloscope

●

(Optional) Network analyzer to measure return loss

●

(Optional) Ammeter to measure supply current

Connections and Setup

This section provides a step-by-step quide to testing the

basic functionality of the EV kit.

Caution: Do not turn on

DC power or RF signal generators until all connections

are completed.

1) Verify that the shunt across jumper JU1 on the

INTF3000+ interface board has been removed.

2) Connect 20-pin header J1 on the INTF3000+ interface

board to 20-pin header JP2 on the EV kit using the

supplied ribbon cable.

Note: Pin 1 of the interface

cable corresponds to the red wire. Pin 1 is designated

in the silkscreen on each of the PCBs.

3) With its output disabled, set the DC power supply to

+5V. Connect the power supply to the +5V (through

an ammeter if desired) and GND terminals on the EV

kit. If available, set the current limit to 650mA.

4) With its output disabled, set the other DC power-

supply voltage to +3.3V. Connect the power supply

to the VPULL and GND terminals on the INTF3000+

interface board.

5) With its output disabled, set the RF signal generator

to a 40MHz frequency and a -20dBm power level.

Connect the output of the RF signal generator to the

SMA connector labeled RFIN on the evaluation board.

6) Install and run the MAX3521 EV kit software, available

for download

HERE.

7) Turn on the +3.3V power supply, followed by the

+5V power supply. The supply current from the +5V

supply should read approximately 5mA. Be sure to

adjust the power supply to account for any voltage

drop across the ammeter.

8) Load the default register settings from the control

software by clicking on the

Defaults button.

9) Connect the SMA connector labeled RFOUT on the

evaluation board to a spectrum analyzer or to an

oscilloscope. Set TXEN = 1. The supply current from

the +5V supply should read approximately 475mA.

10) Enable the RF signal generator’s output. Check the

output level on the spectrum analyzer or oscilloscope.

Expected power level is about +12.3dBm under

default setting

11) Set the gain code using the control software.

Check the output level on the spectrum analyzer or

oscilloscope.

Note: Indicate that you are using the MAX3521 when contacting these component suppliers.

Windows is a registered trademark and registered service mark

of Microsoft Corporation.

SUPPLIER

PHONE

WEBSITE

Emerson Network Power

507-833-8822

www.emersonnetworkpower.com

Keystone Electronics Corp.

800-221-5510

www.keyelco.com

Murata Americas

800-241-6574

www.murataamericas.com

Sullins Electronics Corp.

760-545-6700

www.sullinselectronics.com

TOKO America, Inc.

847-297-0070

www.tokoam.com

Component Suppliers