MAX2150EVKIT+ - Maxim Integrated Products, Inc.

General Description

The MAX2150 evaluation kit (EV kit) simplifies testing of

the MAX2150 complete wideband I/Q modulator chip.

The kit allows evaluation of the I/Q modulator, synthe-

sizer, 3-wire programming interface, and power-

management features. The EV kit provides 50Ωcon-

nectors for all signal inputs and outputs.

Features

♦3-Wire Control Interface

♦Differential Baseband Inputs

♦2.7V to 3.6V Single-Supply Operation

♦50ΩConnectors on All Signal Ports

♦Low-Power Shutdown Modes

♦PC Control Software

(Available at www.maxim-ic.com)

Evaluates: MAX2150

MAX2150 Evaluation Kit

________________________________________________________________ Maxim Integrated Products 1

DESIGNATION QTY DESCRIPTION

BUFEN 1 3-pin header, 100mil centers

Digi-Key S1012-36-ND

C1, C2, C3,

C12, C18, C28,

C30, C31, C34,

C36, C37, C50,

C52

13 0.1µF ±10% capacitors (0603)

Murata GRM188R71C104K

C4, C9, C10,

C11, C13, C35 6100pF ±5% capacitors (0402)

Murata GRP1555C1H101J

C5, C6, C7,

C15, C16 5 Open

C8 1 22pF ±5% capacitor (0402)

Murata GRP1555C1H220J

C14, C17 2 100pF ±5% capacitors (0603)

Murata GRM1885C1H101J

C19, C20, C21,

C32, C33 50.1µF ±10% capacitors (0402)

Murata GRP155R61A104K

C22 1 6800pF ±10% capacitor (0402)

Murata GRP155R71E682K

C23 1 0.068µF ±10% capacitor (0402)

Murata GRP155R61A683K

C24 1 680pF ±10% capacitor (0402)

Murata GRP155R71H681K

Ordering Information

19-2573; Rev 0; 8/02

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.

PART TEMP RANGE IC PACKAGE

MAX2150EVKIT -40°C to +85°C 28 QFN

SUPPLIERS PHONE FAX WEBSITE

AVX 843-448-9411 843-448-7139 www.avxcorp.com

Coilcraft 800-322-2645 847-639-1469 www.coilcraft.com

Murata 770-436-1300 770-436-3030 www.murata.com

Taiyo Yuden 800-368-2496 408-573-4159 www.t-yuden.com

Toko 847-297-0070 847-699-7864 www.tokoam.com

Component Suppliers

DESIGNATION

QTY

DESCRIPTION

C25 1

1µF ±10% tantalum capacitor, case A

AVX TAJA105K016

C26 1 470pF ±10% capacitor (0402)

Murata GRP155R71H471K

C27 1 1.0µF ±10% capacitor (0603)

Murata GRM188R60J105K

DCIN, EN 2Test points

Digi-Key 5000-ND

J1, J3 2

50Ω BNC connectors, 31 series,

Amphenol Allied Electronics

31-5329-52RFX 713-9041

J5, J6, J7, J11,

J16, J17, J19,

J20, VCCSD

92-pin headers, 100mil centers

Digi-Key S1012-36-ND

J8, J13, J14,

J15, J18

(Note 2)

5SMA connectors, edge mount

EFJohnson 142-0701-801

J10 1 10-pin header

Digi-Key S2012-36-ND

J19, J20,

BUFEN,

VCCSD

4Shunt-shorting jumpers

Digi-Key S9000-ND

Component List

Evaluates: MAX2150

Quick Start

The MAX2150 EV kit is fully assembled and factory test-

ed. Follow the instructions in the Connections and

Setup section.

Test Equipment Required

This section lists the recommended test equipment to

verify the operation of the MAX2150. It is intended as a

guide only, and substitutions are possible.

• One RF signal generator capable of delivering

-7dBm of output power in the 10MHz to 50MHz fre-

quency range (HP 8648A or equivalent) for the PLL

reference frequency

• RF spectrum analyzer capable of measuring up to 7GHz

RF signal (Rohde & Schwarz FSEA20 or equivalent)

• RF power meter capable of measuring up to

+10dBm output power (HP 437B or equivalent) with

an RF sensor

• RF network analyzer

• Oscilloscope

• Two power supplies that can provide 250mA at

+5.0V (AG E3631A or equivalent)

• Arbitrary waveform generator (HP E4433B or equivalent)

Connections and Setup

This section provides step-by-step instructions for get-

ting the EV kit up and running in all operation modes.

1) Verify that jumpers are in place.

2) Verify that the interface board is in place.

MAX2150 Evaluation Kit

2 _______________________________________________________________________________________

DESIGNATION QTY DESCRIPTION

L1 1 Open

R1–R4, R29,

R35 6 Open

R12 1 0Ω ±5% resistor (0402)

R13, R18 2 0Ω ±5% resistors (0603)

R23 1 245Ω ±5% resistor (0402)

R24, R25 2 1.1kΩ ±1% resistors (0402)

R31–R34 4 3.3kΩ ±5% resistors (0603)

U1 (Note 1) 1 MAX2150EGI I/Q wideband

modulator

U2 1 VCO

Fujitsu VC-3R0A23-0967/1750B

VTUNE_OUT 1 SMA connectors, PC mount

EFJohnson 142-0701-201

Y1 1

20MHz surface-mount crystal

CTS Reeves Digi-Key

ATS200SM CTX515TR-ND

None 1 MAX2150 EV kit circuit board, rev C

None 1 MAX2150 data sheet

None 1 MAX2150 EV kit data sheet

Component List (continued)

Note 1: This IC has an exposed pad. It must be solder

attached to the circuit board to ensure proper function.

Note 2: Cut center pin to approximately 1/16in long.

CONNECTOR NAME DESCRIPTION DC VOLTAGE RANGE

J1, J3 I, Q I/Q Baseband Input BNC Connectors —

J5, J19 VCCVCO VCC to On-Board VCO 2.7V ~ 3.6V

J6 VCC Supply Voltage 2.7V ~ 3.6V

J7, J11 GND Ground —

J8 RFOUT RF Output (SMA) —

J10 —Interface Connection 2.7V ~ 3.6V

J13 BUFOUT Buffer Output (SMA) —

J14, J15 LO External LO Input (SMA) —

J16, J17 N.C. No Connection —

J18 REFL IN Reference Input (SMA) —

J20 LOCK Lock Signal Output —

—BUFEN Buffer Enable —

—DCIN Bias Voltage Input 1.6V

—EN Enable Pin Input —

—TUNE_OUT Tuning Voltage Output —

—VCCSD VCC to Sigma-Delta Modulator 2.7V ~ 3.6V

Connector Description

3) Set the power supply to +3V and turn it off.

4) Set the adjustable power supply to +1.6V and turn it

off.

5) Connect the ground terminal to GND.

6) Connect the positive +3V terminal to VCC and the

power supply of the interface board.

7) Connect the positive terminal of the adjustable

power supply to pin DCIN on the board.

8) Set the I/Q generator to 330kHz, with an input level

of 1VP-P. Leave the I/Q generator output off.

9) Using 2 BNC cables, connect the output of the I/Q

generator to the I/Q input connectors on the

MAX2150 EV kit board.

10) Use an SMA cable to connect the RFOUT to the

input of the spectrum analyzer.

11) Set the spectrum analyzer to view the output.

12) Turn on all power supplies and enable I/Q signal

generator.

13) Measure the supply current level.

14) Observe the RF output frequency as displayed on the

spectrum analyzer. Measure the RF output power.

15) The RF output power should be approximately

-4dBm after accounting for cable and connector loss.

Adjustments and Control

Operation Modes:

1) TX mode

2) SYNTH mode

3) MOD mode

4) Software shutdown mode

5) Hardware shutdown mode

Refer to the MAX2150 data sheet for details.

Layout Issues

A good PC board is an essential part of an RF circuit

design. The EV kit PC board can serve as a guide for

laying out a board using the MAX2150. Keep traces

carrying RF signals as short as possible to minimize

radiation and insertion loss. Use impedance control on

all RF signal traces. The VCC node on the PC board

should have decoupling capacitors to the closest

ground. Refer to the Layout section of the MAX2150

data sheet for more information.

Evaluates: MAX2150

MAX2150 Evaluation Kit

_______________________________________________________________________________________ 3

Evaluates: MAX2150

MAX2150 Evaluation Kit

4 _______________________________________________________________________________________

MAX2150

VCC

GND

C25

1µF

C31

0.1µF

R29

OPEN

0.1µF

C17

100pF

C18

0.1µF

2VCC_PA

1TXEN

3RFOUT

4TEST2

C16

OPEN

C15

OPEN

R13

0Ω

RFOUT

J16

5TEST1

J17

7VCC_SD

VCCSD

6LOCK

LOCK

J20

VCC

C14

100pF

C27

1.0µFCLK

DATA

J10–5

J10–9

SHDN

J10–13

STNEN

OSCIN VCC_XTAL

13 14

J10–17

J10–19

J10–15

J10–7

J10–11

J10–3

J10–1

J10–4

J10–8

J10–12

J10–16

J10–18

J10–20

J10–14

J10–6

J10–10

J10–2

C37

0.1µF

C36

0.1µF

OPEN

JUMP_PAD

LOCK

CLK

DATA

FILTVCC

TXEN

SYNEN

VCOSEL

SHDN

C30

0.1µFJ18 REFL

R18

0ΩY1

C13

100pF

C21

0.1µF

VCC

100pF

C19

0.1µF

VCC_CHP

CHP

VCC_A

C22

6800pF

C24

680pF

C26

470pF

C35

100pF

C34

0.1µF

R23

245Ω

C23

0.068µF

R24

1.1kΩ

R25

1.1kΩ

R35

OPEN

TUNEOUT

VTUNE_OUT

GND

VCC

VSW

GND

OUT

GND

J11

GND

VCCVCO

U2 VC34DA230967/

1750B350FUJI

C10

100pF

VCC

VCC_D

100pF

VCC

VCC_LO

LO-

C12

0.1µF

C11

100pF

C20

0.1µF

J15

LO+

OPEN

J14

OPEN

J13

BUFOUT

C32

0.1µF

C33

0.1µF

R34

3.3kΩ

R33

3.3kΩ

R32

3.3kΩ

R31

3.3kΩ

C28

0.1µF

DCIN

OPEN

31-5239-52RFX

C50

0.1µF

31-5239-52RFX

C52

0.1µF

VCC_RF

I+

I-

Q+

Q-

BUFEN

BUFOUT

0.1µF

BUFEN

VCC

R12

0Ω

22pF

J19

Figure 1. MAX2150 EV Kit Schematic

Evaluates: MAX2150

MAX2150 Evaluation Kit

_______________________________________________________________________________________ 5

Figure 2. MAX2150 EV Kit Primary-Side Silkscreen

1.0"

Evaluates: MAX2150

MAX2150 Evaluation Kit

6 _______________________________________________________________________________________

Figure 3. MAX2150 EV Kit Secondary-Side Silkscreen

1.0"

Evaluates: MAX2150

MAX2150 Evaluation Kit

Figure 4. MAX2150 EV Kit PC Board Layout—Layer 2 Figure 5. MAX2150 EV Kit PC Board Layout—Layer 3

Figure 6. MAX2150 EV Kit Primary Component Side Figure 7. MAX2150 EV Kit Secondary Side

1.0"

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. 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 _____________________ 7

1.0"

1.0" 1.0"