MAX3558EVKIT资料

19-3073; Rev 0; 11/03

MAX3558 Evaluation Kit

General Description

FeaturesThe MAX3558evaluation kit (EV kit) simplifies evaluationof the broadband LNA. It enables testing of the device’so75ΩF-Connector Ports for Easy TestingRF performance and requires no additional support cir-oOutput Baluns Included for Easy Testingcuitry. The signal inputs and outputs use F-connectorsto simplify the connection of RF test equipment. EachoJumpers for AGC and SHDNoutput includes a balun for differential-to-single-endedoFully Assembled and Tested

conversion. The EV kit is fully assembled and tested.

Ordering Information

PARTTEMP RANGEIC PACKAGECAUTION! ESD SENSITIVE DEVICEMAX3558EVKIT0°C to +70°C28 QFN-EP* (5mm x 5mm)*EP = Exposed paddle.

Component Suppliers

SUPPLIERPHONEFAXWEBSITEAVX843-448-9411803-626-3123www.avxcorp.comCoilcraft847-639-00803-639-1469www.coilcraft.comMurata770-436-1300770-436-3030www.murata.comTaiyo Yuden800-348-2496847-925-09www.t-yuden.comTOKO847-297-0070847-699-78www.toko.comNote:Please indicate that you are using the MAX3558 when contacting these component suppliers.Component ListDESIGNATIONQTYDESCRIPTIONDESIGNATIONQTYDESCRIPTIONC1N–C4N,RB11.1kΩ ±1% resistor (0603)C1P–C4P, CINP,140.01µF capacitors (0603)LINP15.1nH inductor (0603)CPD, CA1–CA4LB182nH inductor (0603)CM1Not installedCINN10.01µF capacitor (0402)FL11470Ω EMI filterMurata BLM21AG471SC1–C441000nF capacitors (0603)C6133µF tantalum capacitorT1–T44Balun transformersPulse CX2038C712.2µF tantalum capacitorU11MAX3558CGIC810.1µF tantalum capacitorJPA1–JPA4, JPPD52-pin headersR1, R4,R21, R31, R41586.6Ω ±1% resistors (0603)JPRA, JPS1–JPS453-pin headers(not installed)TP1, GND, VCC3Test pointsR2, R3,R22, R32, R4250Ω 0603 resistorsF-connectorsOUT1–OUT4, RFIN5Duplex CSA, Ltd.RA111kΩ ±1% 0603 resistorF-P225GD/D-DPXRA10110kΩ ±1% 0603 resistor________________________________________________________________Maxim Integrated Products1

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-42, or visit Maxim’s website at www.maxim-ic.com.

Evaluates: MAX3558元器件交易网www.cecb2b.com

MAX3558 Evaluation KitEvaluates: MAX3558 Quick Start

The MAX3558 EV kit is fully assembled and factory test-ed. Follow the instructions in the Connections andSetup section for proper device evaluation. Figure1shows the schematics. Figures 2–7 are componentplacement guides and PC board layouts.

5)

Connect the spectrum analyzer to the OUT1 F-connector. Set the center frequency to 50MHz andset the span to 5MHz.

Turn on the DC power supplies and the RF signalgenerator.

Slowly increase the adjustable supply to +3V forthe gain control.

You should see the output signal on the spectrumanalyzer. Adjust the voltage on the JPA1 pin toobserve the gain-control range.

When measuring the gain, be sure to account forbalun losses (0.08dB at 50MHz), cable losses,and circuit board losses (0.1dB).

6)7)8)

Test Equipment Required•An RF signal generator capable of delivering+13dBm of output power up to 900MHz

•A spectrum analyzer covering the operating fre-quency range of the device

•A +4.75V to +5.25V power supply that can source500mA•A 0 to +3V adjustable DC supply that can source1mA for AGC input

•A voltmeter or multimeter for monitoring the power-detector output

•(Optional) An ammeter for measuring supply current•(Optional) A network analyzer for measuring gainand return loss

9)

10)Repeat the steps for output OUT2 to OUT4, if

desired.

11)(Optional) Another method for determining gain is

by using a network analyzer. This has the advan-tage of displaying gain over a swept frequencyband and input power. Refer to the network ana-lyzer manufacturer’s user manual for setup details.

Power-Detector Testing

1)2)3)

If connected, remove the adjustable DC powersupply connected to the JPA1.

Make sure there are shunts on JPPD, JPA1, JPRA(either side), and JPS1 is in the ON position.Vary the signal generator’s output power toobserve the LNA’s output power. Once the inputpower reaches the attack point, the LNA’s outputpower should be relatively constant.

Connections and SetupThis section provides a step-by-step guide to operatingthe EV kit and testing the device’s functions. Do notturn on any DC power or RF signal generator untilall connections are completed.

LNA Output Testing

1)

Make sure there are shunts installed on JPS2,JPS3, and JPS4 in the OFF position, and a shunt inthe ON position for JPS1. This setting activatesOUT1 while turning off the remaining outputs.Connect a DC power supply, preset to +5.0V, toVCC(through an ammeter if desired), and GNDterminals on the EV kit. If available, set the currentlimit to 400mA.

Connect an adjustable DC power supply, preset to+0V, to the JPA1 jumper and GND terminals onthe EV kit. If available, set the current limit to 1mA.The JPA1 is the AGC1 input.

Connect the RF signal generator to the RFIN F-connector. Do not turn on the generator’s output.Set the generator for an output frequency of50MHz. Set the level to +15dBmV.

LayoutThe EV kit PC board can serve as a guide for layoutusing the MAX3558. Keep traces carrying RF signals asshort as possible to minimize radiation and insertionloss due to the PC board. Keep the differential outputtraces together and of equal length to ensure signalamplitude balance. Solder the entire bottom sideexposed paddle evenly to the board ground plane.

2)

3)

4)

2_______________________________________________________________________________________

元器件交易网www.cecb2b.com

MAX3558 Evaluation Kit

Figure 1. MAX3558 EV Kit Schematic

_______________________________________________________________________________________

3

Evaluates: MAX3558元器件交易网www.cecb2b.com

MAX3558 Evaluation KitEvaluates: MAX3558 1.0\"Figure 2. MAX3558 EV Kit Component Placement Guide—Component Side

4_______________________________________________________________________________________

元器件交易网www.cecb2b.com

MAX3558 Evaluation Kit

1.0\"1.0\"Figure 3. MAX3558 EV Kit PC Board Layout—Component Side

Figure 4. MAX3558 EV Kit PC Board Layout—Ground Plane 11.0\"1.0\"Figure 5. MAX3558 EV Kit PC Board Layout—Ground Plane 2

Figure 6. MAX3558 EV Kit PC Board Layout—Solder Side

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________5©2003 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products.

Evaluates: MAX3558