MAX3710 Evaluation Kit
Evaluates: MAX3710
General Description
The MAX3710 evaluation kit (EV kit) is an assembled
demonstration board that provides electrical and opti-
cal evaluation of the MAX3710 125Mbps to 2.5Gbps
integrated limiting amplifier/burst mode laser driver with
dual-loop power control. The controlling software com-
municates with the EV kit through the USB port of the
included card and provides simplified control of all func-
tions of the MAX3710. The EV kit can be fully powered
by the USB port, or the user can choose to power the
MAX3710 by an external 3.3V supply while the USB port
supplies the included HFRD46-1 USB daughter card.
The laser connection on the EV board allows attachment
of lasers in TO-header packages.
Features
S Software Control of the MAX3710
S Power Supplied Through USB or External
Connection
S Connection for Lasers in TO Packages
EV Kit Contents
S MAX3710 EV Kit Board
Component List
19-6010; Rev 1; 10/12
Ordering Information appears at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
DESIGNATION QTY DESCRIPTION
C1, C4, C5, C8,
C26, C27, C38 71000pF ±10% ceramic
capacitors (0402)
C2, C3, C6, C7 41FF ±10% ceramic capacitors
(0402)
C9 1 1pF ±0.25pF ceramic
capacitor (0402)
C10 1 6.8pF ±5% ceramic capacitor
(0402)
C11 1 22pF ±10% ceramic
capacitor (0402)
C12, C13, C28,
C30 40.01FF ±10% ceramic
capacitors (0402)
C14 1 8.2pF ±0.25pF ceramic
capacitor (0402)
C15 1 100pF ±5% ceramic capacitor
(0402)
C23, C29 210FF ±20% ceramic capacitors
(0603)
C24, C25, C31,
C35, C37 50.1FF ±10% ceramic
capacitors (0402)
D1, D2, D3 3Red LEDs
D4, D7 2Green LEDs
D5 1 Laser, user installed
J1–J8 8 SMA connectors, edge mount
J9, J10 8SMB connectors, PC mount
J13, J15, TP1–
TP6, TP9–TP13,
TP17, TP18, TP19,
TP21, TP22, TP25
19 Test points
J14 1 Micro-pitch connector
JU19, JU20, JU21 32 -in headers, 0.1in centers
JU26 1 3-pin header, 0.1in centers
DESIGNATION QTY DESCRIPTION
L1 1 Ferrite bead (0402)
Murata BLM15HG102
L3, L5, L6 34.7FH ±20% inductors
Q1, Q2, Q3 3npn transistors
R1, R3, R19 34.7kI ±5% resistors (0402)
R2, R26, R32,
R35–R38,
R43–R46
11 Not installed, resistors
R4, R51 210.0kI ±1% resistors (0402)
R5, R6, R39–R42 60I resistors (0402)
R7 1 10I ±5% resistor (0402)
R8 1 6.04kI ±1% resistor (0402)
R9 1 470I ±5% resistor (0402)
R10 1 82I ±5% resistor (0402)
R12 1 39I ±5% resistor (0402)
R14 1 22I ±5% resistor (0402)
R15 1 27I ±5% resistor (0402)
R17, R50, R52–R55 61.00kI ±1% resistors (0402)
R24, R25 2100I ±1% resistors (0402)
S1, S2 2SP3T switches
U1 1
Limiting amplifier/laser driver
(24 TQFN-EP*)
Maxim MAX3710ETG+
U2 1 EEPROM
Atmel
— 1 HFRD46-1 USB interface card
— 1 PCB: MAX3710 EVALUATION
BOARD+, REV A
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.
Evaluates: MAX3710
2
MAX3710 Evaluation Kit
Maxim Integrated
Quick Start
Note: In the following section, software-related items are
identified by bolding. Text in bold refers to items directly
from the EV kit software. Text in bold and underlined
refers to items from the Windows® operating system.
Initial Setup
1) Install the MAX3710 EV kit software on a computer
by attaching the USB daughter card to the computer
using the supplied USB cable. After the USB device
has been detected and installed by the operating sys-
tem, a flash drive becomes available in the Devices
with Removable Storage section of My Computer.
Search the flash drive for the MAX3710 EV kit.ZIP file.
Copy this file to the desktop or another known folder
and unzip the file. Locate the newly created MAX3710
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 → MAX3710 EV Kit GUI. The
software is a graphical user interface, or GUI, meant
to simplify control of the MAX3710.
3) A USB daughter card is included with the MAX3710
EV kit (HFRD46-1). Insert this card into the connector
J14.
4) Set 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. Click the Initialize button in the software to
initiate communication to the EVkit. When communi-
cation is established the Status indicator on the GUI
turns green.
Transmitter Evaluation
For transmitter evaluation follow these steps:
1) Solder a laser to connection D5. See Figure 1 for more
information about the laser connection.
2) Determine whether to connect a high-speed source
to the BEN inputs (J5 and J6), or whether to manually
control the BEN input.
a) If using the input SMA connectors, the default EV kit
components are set up for a CML or LVDS source.
If you have a different source or would like oper-
ate the EV kit single-ended, refer to Figure 3 in the
MAX3710 IC data sheet for information on how to
configure the BEN input.
b) If you choose manual control, remove the differen-
tial input resistor at R25 and add a 10kI resistor
at R26. Doing so allows direct control of the BEN
input by switch S2, or by the software GUI if the
switch S2 is set to the mid position.
3) 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 exter-
nal DC-blocks.
4) If BEN is to be operated through the SMA connectors,
connect a 50I source to BEN+ and BEN- (J5 and J6).
Set the source differential amplitude to 500mVP-P and
the common-mode voltage to 2V. See Figure 1 of the
MAX3710 IC data sheet for more information on the
acceptable differential and common-mode voltages
at BEN.
5) Connect the output from the TOSA to an opti-
cal receiver (optical-to-electrical converter or optical
input head on an oscilloscope).
6) All controls of the MAX3710 are available in the soft-
ware. 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 button should be toggled to reset the part.
7) The registers contain a default setting and can be
read using the Block Read All button. For detailed
register functions, refer to the MAX3710 IC data sheet.
8) Note that the GUI software automatically sets the
MAX3710 into “setup mode” before writing to a regis-
ter. If the Enable Block Write checkbox is checked,
multiple writes can be buffered by the GUI and written
all at once when the TX Block Write or Block Write
All button is clicked.
Windows is a registered trademark and registered service
mark of Microsoft Corporation.
Evaluates: MAX3710
3
MAX3710 Evaluation Kit
Maxim Integrated
Receiver Evaluation
For receiver evaluation follow these steps:
1) Connect a 50I source to RIN+ and RIN- (J3 and J4).
2) Connect the 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
MAX3710 into “setup mode” before writing to a regis-
ter. 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.
Graphical User Interface (GUI)
The GUI consists of four main sections: receiver, trans-
mitter, dual power control, and block read and write
(Figure 2).
Receiver
All the controls for the RECEIVER portion of the MAX3710
are included in this block. The SET_CML and SET_LOS
registers are written to by inserting the desired decimal
value for the register in the appropriate box and clicking
the LOAD button.
Transmitter
The TRANSMITTER block allows control of transmitter’s
general settings. Clicking the TX Read button reads all
the registers shown in the TRANSMITTER section.
Dual Power Control
The Dual Power Control block allows adjustment and
monitoring of the transmitter’s dual power-control loops.
A subblock in this section, DATA REPORTING, uses the
MAX3710’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 8bit.8bit so they
range from 0 to 255 with 0.0039 granularity.
Block Read and Write
The Block Read and Write section allows the user to
read/write to more than one register at a time. Clicking
any of the Block Read buttons will cause the GUI to exe-
cute a block read of the appropriate group of registers.
By clicking the Enable Block Write box, the user will be
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 BIock Write is not selected, individual bits will be
written any time a check box is checked or unchecked,
or a field value is changed.
Evaluates: MAX3710
4
MAX3710 Evaluation Kit
Maxim Integrated
Figure 1. TOSA Connection
Figure 2. MAX3710 EV Kit Software
MONITOR DIODE
ANODE
LASER DIODE ANODE/
MONITOR DIODE CATHODE
LASER DIODE CATHODE
TOSA CASE
MAX3710
Evaluates: MAX3710
5
MAX3710 Evaluation Kit
Maxim Integrated
Figure 3. MAX3710 EV Kit Schematic
Evaluates: MAX3710
6
MAX3710 Evaluation Kit
Maxim Integrated
Figure 4. MAX3710 EV Kit Component Placement Guide—Component Side
Evaluates: MAX3710
7
MAX3710 Evaluation Kit
Maxim Integrated
Figure 5. MAX3710 EV Kit PCB Layout—Top Side
Evaluates: MAX3710
8
MAX3710 Evaluation Kit
Maxim Integrated
Figure 6. MAX3710 EV Kit PCB Layout—Ground Plane
Evaluates: MAX3710
9
MAX3710 Evaluation Kit
Maxim Integrated
Figure 7. MAX3710 EV Kit PCB Layout—Power Plane
Evaluates: MAX3710
10
MAX3710 Evaluation Kit
Maxim Integrated
Figure 8. MAX3710 EV Kit PCB Layout—Solder Side
Evaluates: MAX3710
11
MAX3710 Evaluation Kit
Maxim Integrated
Figure 9. MAX3710 EV Kit PC Component Placement Guide—Solder Side
Evaluates: MAX3710
12
MAX3710 Evaluation Kit
Maxim Integrated
Ordering Information
+Denotes lead(Pb)-free and RoHS compliant.
PART TYPE
MAX3710EVKIT+ EV Kit
Evaluates: MAX3710
MAX3710 Evaluation Kit
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.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 13
© 2012 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 8/11 Initial release —
1 10/12 Updated resistor R2 in Component List 1
