19-0838; Rev 1; 4/08
MAX5535 Evaluation Kit
General Description
The MAX5535 evaluation kit (EV kit) provides a proven
design to evaluate the MAX5535 dual, 12-bit DACs. The
EV kit also includes Windows
®
2000/XP-compatible
software that provides a simple graphical user interface
(GUI) for exercising the features of the MAX5535.
The MAX5535 EV kit PCB comes with a MAX5535ETC+
installed. Contact the factory for free samples of the
pin-compatible MAX553_ETC+, MAX552_ETC+, or
MAX551_ETC+ devices. The hardware and software
support evaluation of these devices as well.
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Features
Wide 1.8V to 5.5V Supply Range
USB-PC Connection (Cable Included)
USB Powered
Lead-Free and RoHS-Compliant
4-Pin Signal Header
Accepts Through-Hole Gain-Setting Resistors
SPI™ Interface Terminals
Optional 2.5V On-Board Reference (MAX6126)
Proven PCB Layout
Fully Assembled and Tested
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
Ordering Information
PART
TYPE
EV Kit
PC INTERFACE
USB
Windows is a registered trademark of Microsoft Corp.
SPI is a trademark of Motorola, Inc.
MAX5535EVKIT+
+Denotes
lead-free and RoHS-compliant.
Component List
DESIGNATION
C1, C3–C10,
C17, C21–C25,
C28, C30, C31
C2, C13, C15,
C29, C32
QTY
18
DESCRIPTION
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
10µF ±20%, 6.3V X5R ceramic
capacitors (0805)
TDK C2012X5R0J106M
10pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H100J
1µF ±20%, 6.3V X5R ceramic
capacitors (0603)
TDK C1608X5R0J105K
TDK C1608X5R0J105M
22pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H220J
3300pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H332K
2200pF ±10%, 100V C0G ceramic
capacitor (0603)
Murata GRM188R72A222K
4.7µF ±20%, 16V X7R ceramic
capacitor (1206)
TDK C3216X7R1C475M
DESIGNATION
QTY
DESCRIPTION
Green LED (0603)
Stanley Electric BG1111C-TR
Panasonic LNJ314G8TRA
Panasonic LNJ308G84RA
0
Ω
±5% resistor (0603) (use lead-
free parts only)
10-pin dual-row header (2 x 5)
4-pin dual-row header (2 x 2)
Not installed, cut-here PCB trace
shorts
3-pin headers
2-pin header
USB type-B right-angle female receptacle
Assmann Electronics, Inc. AU-Y1007-R
0
Ω
±5% resistors (0603)
(use lead-free parts only)
220
Ω
±5% resistor (0603)
(use lead-free parts only)
10k
Ω
±5% resistor (0603)
(use lead-free parts only)
2.2k
Ω
±5% resistor (0603)
(use lead-free parts only)
1.5k
Ω
±5% resistor (0603)
(use lead-free parts only)
D1
1
5
FB1
H1
H2
JUA–JUE
JU1–JU5
JU6
P1
R1, R8, R10
R2
R3
R4
R5
1
1
1
0
5
1
1
3
1
1
1
1
C11, C12
2
C14, C16
2
C18, C19
2
C20
1
C26
1
C27
1
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX5535 Evaluation Kit
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
Component List (continued)
DESIGNATION
R6, R7
R9, R11
R12–R15
R16
U1
U2
QTY
2
0
0
0
1
1
DESCRIPTION
27
Ω
±5% resistors (0603)
(use lead-free parts only)
Not installed, resistors (0603)
Not installed, resistors (through hole)
Not installed, resistor (0402)
(use lead-free parts only)
Dual low-power DAC (12 TQFN-EP*)
Maxim MAX5535ETC+
Microcontroller (68 QFN-EP*)
Maxim MAXQ2000-RAX+
93C46 type 3-wire EEPROM (8 SO)
16-bit architecture
Atmel AT93C46A-10SU-2.7
UART-to-USB converter
FTDI FT232BL (32 TQFP)
3.3V regulator (5 SC70)
Maxim MAX8511EXK33+T
(Top Mark: AEI)
2.5V regulator (5 SC70)
Maxim MAX8511EXK25+T
(Top Mark: ADV)
U8
1
U7
1
DESIGNATION
QTY
DESCRIPTION
Single 1.8V to 5V level translator
(6 SOT23)
(Top Mark: CT1_)
TI SN74LVC1T45DBVT
TI SN74LVC1T45DBVR
Dual 1.8V to 5V level translators
(8 SSOP)
(Top Mark: CT2_)
TI SN74LVC2T45DCTT
TI SN74LVC2T45DCTR
2.5V voltage reference (8 SO)
Maxim MAX6126AASA25+
16MHz crystal
Citizen HCM49-16.000MABJ-UT
6MHz crystal
Citizen HCM49-6.000MABJ-UT
Shunts
USB high-speed A-to-B cables, 6ft
Assmann Electronics AU-Y1002A-R
PCB: MAX5535 Evaluation Kit+
U9
Y1
Y2
—
—
—
1
1
1
6
1
1
U3
1
U4
1
U5
1
U6
1
*Exposed
pad.
Quick Start
Component Suppliers
SUPPLIER
PHONE
WEBSITE
Murata Electronics
770-436-1300 www.murata-northamerica.com
North America, Inc.
TDK Corp.
847-803-6100 www.component.tdk.com
Recommended Equipment
Before beginning, the following equipment is needed:
• MAX5535 EV kit (USB cable included)
•
•
A user-supplied Windows 2000/XP PC with a spare
USB port
Two digital voltmeters (DVMs)
Note:
Indicate that you are using the MAX5535 when contacting
these component suppliers.
MAX5535 EV Kit Files
FILE
INSTALL.EXE
MAX5535.EXE
HELPFILE.HTM
FTD2XX.INF
UNINST.INI
TROUBLESHOOTING_USB.PDF
DESCRIPTION
Installs the EV kit files on
your computer
Application program
MAX5535 EV kit help file
USB device driver file
Uninstalls the EV kit software
USB driver installation
help file
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
underlined
refers to items from the Windows 2000/XP
operating system.
Procedure
The MAX5535 is fully assembled and tested. Follow the
steps below to verify board operation:
1) Visit www.maxim-ic.com/evkitsoftware to download
the latest version of the EV kit software,
5535Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
2) Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the temporary
folder. The program files are copied and icons are
created in the Windows
Start | Programs
menu.
2
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MAX5535 Evaluation Kit
3) Verify that all jumpers (JU1–JU6) are in their default
positions, as shown in Table 1.
4) To measure OUTA, connect the first DVM between
H2-1 (OUTA) and H2-2 (GND).
5) To measure OUTB, connect the second DVM
between H2-3 (OUTA) and H2-4 (GND).
6) Connect the USB cable from the PC to the EV kit
board. A
Building Driver Database
window pops
up in addition to a
New Hardware Found
mes-
sage when installing the USB driver for the first
time. If you do not see a window that is similar to
the one described above after 30s, remove the
USB cable from the board and reconnect it.
Administrator privileges are required to install the
USB device driver on Windows 2000 and XP.
Refer to the TROUBLESHOOTING_USB.PDF docu-
ment included with the software if any problems
arise during this step.
7) Follow the directions of the
Add New Hardware
Wizard
to install the USB device driver. Choose the
Search for the best driver for your device
option.
Specify the location of the device driver to be
C:\Program Files\MAX5535
(default installation
directory) using the
Browse
button.
8) Start the MAX5535 EV kit software by opening its
icon in the
Start | Programs
menu. The EV kit soft-
ware main window should appear, as shown in
Figure 1.
9) Enter 0xD2E into the
D11 - D0 (Shift Register Data
Bits)
edit box.
10) Press the lower
Load DAC A and DAC B
button
located at the bottom of the EV kit software main
window. This loads input and output DAC registers
from the shift register.
11) Verify that the voltage shown on both DVMs is
approximately 1V.
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
Table 1. MAX5535 EV Kit Jumper Descriptions (JU1–JU6)
JUMPER
JU1
JU2
JU3
JU4
SHUNT
POSITION
1-2*
2-3
1-2
2-3*
1-2
2-3*
1-2
2-3*
1-2
JU5
2-3
Open*
JU6
1-2*
Open
DESCRIPTION
MAX5535 VDD is set to the on-board 3.3V supply powered from the USB port.
Connect an external 1.8V to 5V supply to the VDD pad.
Connect user-supplied
CS
signal to the on-board
CS
pad.
MAX5535
CS
signal connected to on-board microcontroller.
Connect user-supplied SCLK signal to the on-board SCLK pad.
MAX5535 SCLK signal connected to on-board microcontroller.
Connect user-supplied DIN signal to the on-board DIN pad.
MAX5535 DIN signal connected to on-board microcontroller.
REFIN = 2.5V from the on-board external reference (MAX6126) for all external reference parts only.
REFIN = VDD for external reference parts only.
Default state for all internal reference parts with a REFOUT pin. Measure REFOUT at pin 2 of JU5.
Note:
For external reference parts, connect a 0V to VDD reference voltage to pin 2 of JU5.
Normal operation.
Measure the MAX5535 supply current by putting a current meter in series with the jumper.
*Default
position.
_______________________________________________________________________________________
3
MAX5535 Evaluation Kit
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
Figure 1. MAX5535 EV Kit Software Main Window (Load DACs Tab)
Detailed Description of Software
The main window of the evaluation software (shown in
Figure 1) displays the voltage and code for all DAC
input and output registers. In addition, the main window
has two tabs. The
Load DACs
tab sheet controls all the
DAC loading features of the MAX5535 family. The
Operating Modes
tab sheet (shown in Figure 2) con-
trols all the DAC modes of the MAX5535 family. The
Load Setting(s)
button must be pressed in order to
write the operating mode settings to the DAC(s).
Detailed Description of Hardware
The MAX5535 EV kit provides a proven layout for the
MAX5535. An on-board reference, level translators,
SPI-interface pads, and easy-to-use USB-PC connec-
tion are included on the EV kit.
Reference
Measure REFOUT at pin 2 of JU5 for all internal refer-
ence parts. Enter the value of the internal reference
voltage into the
Set Vref
edit box in the software GUI.
For external reference parts, connect a 0V to VDD
reference voltage to pin 2 of JU5 or connect the on-
board MAX6126 2.5V reference by placing a shunt
across pins 1-2 of JU5. Measure and enter the value of
the external reference voltage into the
Set Vref
edit box
of the software GUI.
Part
Select the
Part
menu item at the top of the GUI and
check the device that is soldered in the U1 location on
the EV kit board. The software selects the MAX5535 as
the default device because the EV kit is shipped with a
MAX5535ETC+. Contact the factory for free samples of
the pin-compatible MAX553_ETC+, MAX552_ETC+, or
MAX551_ETC+ devices.
Gain
The default gain is set to 1V/V. To change the gain, first
remove R8 and R10. Next, install R8–R11 when using
surface-mount resistors, or R12–R15 when using
through-hole resistors. Refer to the MAX5535 IC data
sheet for information on selecting the resistor values.
Enter the new value of the gain into the
Set Gain
field of
the software GUI.
Debug
Select the
Debug
menu item at the top of the GUI to
execute low-level SPI interface commands. Enter data
into the
Data bytes to be written
edit box and press
the
Send Now
button for manual SPI operations.
4
_______________________________________________________________________________________
MAX5535 Evaluation Kit
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
Figure 2. MAX5535 EV Kit Software Main Window (Operating Modes)
User-Supplied SPI Interface
To use the MAX5535 EV kit with a user-supplied SPI
interface, first move the shunts of JU1–JU4 to the 2-3
position. Next apply your own 1.8V to 5.5V power sup-
ply at the VDD pad. Lastly, connect your
CS,
SCLK,
and DIN signals to the corresponding
CS,
SCLK, and
DIN pads on the MAX5535 EV kit board.
User-Supplied Power Supply
The MAX5535 EV kit is powered completely from the
USB port as default. Move the shunt of JU1 to the 2-3
position to apply your own 1.8V to 5.5V power supply at
the VDD pad.
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