max3711 evaluation kit evaluates max3711 · lo s vccx ri n+ ri n-vc cx bmon mdin mdref vcct o iout...

19-6415; Rev 0; 9/12

Ordering Information appears at end of data sheet.

Component List

MAX3711 Evaluation Kit

Evaluates: MAX3711

General Description

The MAX3711 evaluation kit (EV kit) is a fully assembled and tested demonstration board that provides electri-cal and optical evaluation of the MAX3711, which is a 125Mbps to 3.125Gbps integrated limiting amplifier with a dual-loop laser driver. The controlling software communicates with the EV kit through the USB port of the included card and provides simplified control of all functions of the device. The EV kit can be fully powered by the USB port or the user can choose to power the device with an external 3.3V supply while the USB port supplies the included HFRD-46-1 USB daughter card. The laser connection on the evaluation board allows attachment of lasers in TOSA packages.

Features

S Software Control of the Device

S Power Supplied through the USB or an External Connection

S Connection for Lasers in TOSA Packages

S Proven PCB Layout

S Fully Assembled and Tested

DESIGNATION QTY DESCRIPTION

C1, C4, C5, C8, C26, C27, C38

71000pF Q10% ceramic capacitors (0402)

C2, C3, C6, C7, C12, C13, C16, C17, C28

90.01FF Q10% ceramic capacitors (0402)

C9 11pF Q0.25pF ceramic capacitor (0402)

C10 16.8pF Q5% ceramic capacitor (0402)

C11 122pF Q10% ceramic capacitor (0402)

C14 18.2pF Q0.25pF ceramic capacitor (0402)



C23, C29 210FF Q20% ceramic capacitors (0603)

C24, C25, C31, C35, C37

50.1FF Q10% ceramic capacitors (0402)

D1, D2 2 Red LEDs

D4, D7 2 Green LEDs

D5 1 Laser (user installed)


J1–J4, J7, J8

6 Edge-mount SMA connectors

J10 1 PC-mount SMB connector

J13, J15, TP1–TP6,

TP9–TP13, TP17–TP19, TP21, TP22,

TP25

19 Test points

J14 1 Micropitch connector

JU19–JU21 3 2-pin headers, 0.1in centers

JU26 1 3-pin header, 0.1in centers

L1 1Ferrite bead (0402)Murata BLM15HG102

L2 1 47nH Q20% inductor

L3, L5, L6 3 4.7FH Q20% inductors

Q1, Q2 2npn transistorsZetex FMMT491A

R1, R3 2 4.7kI Q5% resistors (0402)

R2 0 Not installed, resistor (0402)

R4, R51 2 10.0kI Q1% resistors (0402)

R5, R6 2 0I resistors (0402)

R8 1 6.04kI Q1% resistor (0402)

R9 1 47I Q5% resistor (0402)

R10 1 82I Q5% resistor (0402)

R11 1 220I Q5% resistor (0402)

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

Component List (continued)

Component Suppliers

Note: Indicate that you are using the MAX3711 when contacting these component suppliers.

Quick Start

Required Equipment• MAX3711 EV kit

• WindowsM PC

• Oscilloscope

• Pattern generator

Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly from the EV kit software. Text in bold and under-lined refers to items from the Windows operating system.

Procedure for Initial Setup1) Install the EV kit software on a computer by attach-

ing the USB daughter card to the computer using the supplied USB cable. After the USB device has been detected and installed by the operating system, a flash drive becomes available in the Devices with Removable Storage section of My Computer. Search the flash drive for the MAX3711 EV kit.zip file. Copy this file to the desktop or another known folder and unzip the file. Locate the newly created MAX3711 EV kit folder and run setup.exe.

2) After installation is complete, follow this path to start the program: Start | All Programs | Maxim Integrated Products | MAX3711 EV Kit GUI. The software is a graphical user interface (GUI) meant to simplify control of the device.

3) Insert the USB daughter card (HFRD-46-1) into connector J14 on the EV kit.

4) Set the jumper on JU26 to the desired power-supply option (USB or external supply).

5) If an external power supply is used, set the voltage to 3.3V, the current limit to 300mA, and connect the supply to the board.

6) Connect the computer to the USB daughter card with a USB cable (A-male to mini-B-male). Several LEDs should illuminate, indicating that the USB source is powered. Press the Initialize button in the software to initiate communication to the EV kit. When commu-nication is established, the STATUS indicator on the GUI turns green.

Procedure for Transmitter Evaluation1) Solder a laser to connection D5. See Figure 1 for

more information about the laser connection.2) Connect a 50I source to TIN+ and TIN- (J7 and J8).

Set the source differential amplitude to 500mVP-P. Set the source common-mode voltage to 2V or use external DC blocks.Windows is a registered trademark and registered service

mark of Microsoft Corporation.

*EP = Exposed pad.

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R12 1 39I Q5% resistor (0402)

R14, R15 2 22I Q5% resistors (0402)

R24 1 100I Q1% resistor (0402)

R32, R35–R38 0 Not installed, resistors

R50, R52–R54 4 1kI Q1% resistors (0402)

S1 1SP3T switchAlps SSSS211900


U1 1Limiting amplifier and laser driver(24 TQFN-EP*)Maxim MAX3711ETG+

U2 1 EEPROM

— 1 HFRD-46-1 USB interface card

— 1PCB: MAX3711 EVALUATION BOARD+

SUPPLIER PHONE WEBSITE

Diodes Incorporated (Zetex) 805-446-4800 www.diodes.com

Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com

3) Connect the output from the TOSA to an optical receiver (either an optical-to-electrical converter or an optical input head on an oscilloscope).

4) All controls of the device are available in the software. Fault and warning indicators are displayed on the right side of the GUI window. When a hard fault has occurred, the part goes into latched shutdown. The source of the fault should be removed and the DISABLE box should be toggled to reset the part.

5) The registers contain a default setting and can be read using the Block Read All button. For detailed register functions, refer to the MAX3711 IC data sheet.

6) Note that the GUI software automatically sets the device into “setup mode” before writing to a register. If the Enable Block Write checkbox is checked,

multiple writes can be buffered by the GUI and writ-ten all at once when the TX Block Write or Block Write All button is clicked.

Procedure for Receiver Evaluation1) Connect a 50I source to RIN+ and RIN- (J3 and J4).2) Connect outputs ROUT+ and ROUT- (J1 and J2) to

50I oscilloscope inputs.3) The receiver controls are located in the RECEIVER

section of the GUI.4) Note that the GUI software automatically sets the

device into “setup mode” before writing to a register. If the Enable Block Write checkbox is checked, multiple writes can be buffered by the GUI and written all at once when the RX Block Write or Block Write All button is clicked.

Figure 1. TOSA Connection

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MAX3711

LASER DIODE CATHODE

TOSA CASE LASER DIODE ANODE/MONITOR DIODE CATHODE

MONITOR DIODEANODE

Figure 2. MAX3711 EV Kit Software

Detailed Description of Software

Graphical User Interface (GUI)The GUI consists of four main sections: RECEIVER, TRANSMITTER, DUAL POWER CONTROL, and Block Read and Write.

ReceiverAll the controls for the receiver portion of the device are included in the RECEIVER block. The SET_CML and SET_LOS registers are written to by inserting the desired decimal value for the register in the appropriate check-box and pressing the LOAD button.

TransmitterThe TRANSMITTER block allows control of the transmit-ter’s general settings. Pressing the TX Read button reads all the registers shown in the transmitter section.

Dual Power ControlThe DUAL POWER CONTROL block allows adjustment and monitoring of the transmitter’s dual power-control

loops. A sub-block in this section (DATA REPORTING) uses the device’s registers to calculate the apparent average power (NAPC), the apparent extinction ratio (IR), and the average MD current (IMDAVG). The MD0REG and MD1REG values shown in the GUI are 16 bit and range from 0 to 255 in steps of 0.0039.

Block Read and WriteThe Block Read and Write section allows the user to read/write to more than one register at a time. Pressing any of the Block Read buttons causes the GUI to exe-cute a block read of the appropriate group of registers. By checking the Enable Block Write checkbox, the user is able to change multiple registers without a write being executed each time. The GUI buffers the commands and executes them in a single write command once the appropriate Block Write button has been pressed. Note that if a Block Write button is not pressed, indi-vidual bits are written any time a checkbox is checked or unchecked.

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Figure 3a. MAX3711 EV Kit Schematic (Sheet 1 of 2)

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LOS

VCCX

RIN+

RIN-

VCCX

BMON

MDIN

MDRE

F

VCCT

O

IOUT

TOUT TP

FAUL

T

DISA

BLE

CSEL

ROUT

+

ROUT

-

SCL

VCCD

SDA

N.C.

N.C.

TIN+

TIN-

VCCX

VCCX

C410

00pF

C60.0

1µF

C7 0.01µ

F

C810

00pF

VCCX

TP4

BMON

J3J4 RI

N-RI

N+R4

10.0kΩ

R9 47Ω

C10

6.8pFL2 47

nH

C9 1pF

J10

BMON

C12

0.01µ

FR1

422Ω

C5 1000

pF

L1Fe

rrite

Bead

R15

22Ω

VCCT

O

C13

0.01µ

F

PD-A

NODE

LD-A

NODE

/PD

-CAT

HODE

CASE

LD-C

ATHO

DE

C15

100p

FR1

239Ω

C11

22pF

R34.7

kΩ

R14.7

kΩ

TP5

LOS

LOS

VCCX

TP1

FAUL

T

FAUL

T

TP2

DISA

BLE

TP22

CSEL

CSEL

_3W

C20.0

1µF

C30.0

1µF

J1RO

UT+ J2

ROUT

-SC

L_3W

TP3

SCL

VCCD

C110

00pF

SDA_

3W

R24

100Ω

R36

OP

EN

R35

OP

EN

R38

OP

EN

R37

OP

EN

C28

0.01µ

F

C16

0.01µ

FC1

7 0.0

1µF

J7 TIN+

J8 TIN-

S1DI

SABL

EVC

CX

DISA

BLE

D5LA

SER

1 2 3 4 5 6

18 17 16 15 14 13

78

910

1112

2423

2221

2019

R2 OPEN

TP21

SDA

R10

82Ω

C14

8.2pF

MAX

3711

U1

VCCX

C18

12pF

R11

220Ω

R32

OPEN

Figure 3b. MAX3711 EV Kit Schematic (Sheet 2 of 2)

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53.3

V VREGJU

26EX

T.

USB C2

310

µF

JU20

JU19

JU21

C25

0.1µF C3

70.1

µF C24

0.1µF

C26

1000

pF

C38

1000

pFC27

1000

pF

TP11

TP13

TP17

TP25 TP

12

VCCX

VCCT

O

VCCD

J13

GND

TP6

TP9

TP10

TP18

TP19

1 2 3 4BM

ON

5 6 7 8 11 12 13 14 15 16 17 189 10 19 21 22 23 24 25 26 27 2820 29 31 32 33 34 35 36 37 3830 39 4041424344454647484950515253545556575859606162636465666768697071727374757677787980

ADC3 C3

50.1

µF1 32 4

8 67 5

A0 A2A1 GND

VCC

SCL

WP

SDA

U2

SCL_

3W

R5 0Ω

R6 0ΩSD

A_3W

CSEL

_3W

DISA

BLE

LPD

LOS

FAUL

T

R8 6.04

kΩ

R51

10.0kΩ

R52

1.00kΩD4

ADC3

VREG

C31

0.1µF

C29

10µF

VREG

PW

R

R53

1.00kΩ

D1LO

S

Q2

R54

1.00kΩ

D2FA

ULT

Q1D7

USB

PWR

R50

1.00

kΩ

FAUL

TLO

S

J14

L54.7

µH

L34.7

µH L64.7

µH

Figure 4. MAX3711 EV Kit Component Placement Guide—Component Side

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Figure 5. MAX3711 EV Kit PCB Layout—Top Side

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Figure 6. MAX3711 EV Kit PCB Layout—Ground Plane

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Figure 7. MAX3711 EV Kit PCB Layout—Power Plane

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Figure 8. MAX3711 EV Kit PCB Layout—Solder Side

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Figure 9. MAX3711 EV Kit Component Placement Guide—Solder Side

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Ordering Information

#Denotes RoHS compliant.

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Evaluates: MAX3711

PART TYPE

MAX3711EVKIT# EV Kit

Revision History

Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.

Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 14© 2012 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.


Evaluates: MAX3711

REVISIONNUMBER

REVISION DATE

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max3711 evaluation kit evaluates max3711 · lo s vccx ri n+ ri n-vc cx bmon mdin mdref vcct o iout...

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