PART TYPE PC INTERFACE
MAX5535EVKIT+
EV Kit USB
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.
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
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MAX5535 Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-0838; Rev 1; 4/08
Component List
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.
Ordering Information
+
Denotes lead-free and RoHS-compliant.
DESIGNATION
QTY
DESCRIPTION
C1, C3–C10,
C17, C21–C25,
C28, C30, C31
18
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
C2, C13, C15,
C29, C32 5
10µF ±20%, 6.3V X5R ceramic
capacitors (0805)
TDK C2012X5R0J106M
C11, C12 2
10pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H100J
C14, C16 2
1µF ±20%, 6.3V X5R ceramic
capacitors (0603)
TDK C1608X5R0J105K
TDK C1608X5R0J105M
C18, C19 2
22pF ±5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H220J
C20 1
3300pF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H332K
C26 1
2200pF ±10%, 100V C0G ceramic
capacitor (0603)
Murata GRM188R72A222K
C27 1
4.7µF ±20%, 16V X7R ceramic
capacitor (1206)
TDK C3216X7R1C475M
DESIGNATION
QTY
DESCRIPTION
D1 1
Green LED (0603)
Stanley Electric BG1111C-TR
Panasonic LNJ314G8TRA
Panasonic LNJ308G84RA
FB1 1 0
Ω
±5% resistor (0603) (use lead-
free parts only)
H1 1 10-pin dual-row header (2 x 5)
H2 1 4-pin dual-row header (2 x 2)
JUA–JUE 0 Not installed, cut-here PCB trace
shorts
JU1–JU5 5 3-pin headers
JU6 1 2-pin header
P1 1
US B type-B rig ht- ang le fem ale recep tacle
Assm ann E l ectr oni cs, Inc. AU -Y 1007- R
R1, R8, R10 3 0
Ω
±5% resistors (0603)
(use lead-free parts only)
R2 1 220
Ω
±5% resistor (0603)
(use lead-free parts only)
R3 1 10k
Ω
±5% resistor (0603)
(use lead-free parts only)
R4 1 2.2k
Ω
±5% resistor (0603)
(use lead-free parts only)
R5 1 1.5k
Ω
±5% resistor (0603)
(use lead-free parts only)
Windows is a registered trademark of Microsoft Corp.
SPI is a trademark of Motorola, Inc.
Quick Start
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: 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.
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
MAX5535 Evaluation Kit
2 ____________________________________________________________________________________________________
Component List (continued)
DESIGNATION
QTY
DESCRIPTION
R6, R7 2 27
Ω
±5% resistors (0603)
(use lead-free parts only)
R9, R11 0 Not installed, resistors (0603)
R12–R15 0
Not installed, resistors (through hole)
R16 0 Not installed, resistor (0402)
(use lead-free parts only)
U1 1
Dual low-power DAC (12 TQFN-EP*)
Maxim MAX5535ETC+
U2 1 Microcontroller (68 QFN-EP*)
Maxim MAXQ2000-RAX+
U3 1
93C46 type 3-wire EEPROM (8 SO)
16-bit architecture
Atmel AT93C46A-10SU-2.7
U4 1 UART-to-USB converter
FTDI FT232BL (32 TQFP)
U5 1
3.3V regulator (5 SC70)
Maxim MAX8511EXK33+T
(Top Mark: AEI)
U6 1
2.5V regulator (5 SC70)
Maxim MAX8511EXK25+T
(Top Mark: ADV)
DESIGNATION
QTY
DESCRIPTION
U7 1
Single 1.8V to 5V level translator
(6 SOT23)
(Top Mark: CT1_)
TI SN74LVC1T45DBVT
TI SN74LVC1T45DBVR
U8 1
Dual 1.8V to 5V level translators
(8 SSOP)
(Top Mark: CT2_)
TI SN74LVC2T45DCTT
TI SN74LVC2T45DCTR
U9 1 2.5V voltage reference (8 SO)
Maxim MAX6126AASA25+
Y1 1 16MHz crystal
Citizen HCM49-16.000MABJ-UT
Y2 1 6MHz crystal
Citizen HCM49-6.000MABJ-UT
— 6 Shunts
—1
USB high-speed A-to-B cables, 6ft
Assmann Electronics AU-Y1002A-R
— 1 PCB: MAX5535 Evaluation Kit+
*
Exposed pad.
MAX5535 EV Kit Files
FILE DESCRIPTION
INSTALL.EXE Installs the EV kit files on
your computer
MAX5535.EXE Application program
HELPFILE.HTM
MAX5535 EV kit help file
FTD2XX.INF USB device driver file
UNINST.INI
U ni nstal l s the E V ki t softw ar e
TROUBLESHOOTING_USB.PDF
USB driver installation
help file
Note: Indicate that you are using the MAX5535 when contacting
these component suppliers.
SUPPLIER
PHONE
WEBSITE
M ur ata E l ectr oni cs
North Am eri ca, Inc.
770-436-1300
w w w.m urata-nor tham er i ca.com
TDK Corp.
847-803-6100
w w w .com p onent.td k.com
Component Suppliers
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.
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MAX5535 Evaluation Kit
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Table 1. MAX5535 EV Kit Jumper Descriptions (JU1–JU6)
REFIN = 2.5V from the on-board external reference (MAX6126) for all external reference parts only.
*
Default position.
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
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).
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.
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.
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.
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.
MAX5535 Evaluation Kit
4 _______________________________________________________________________________________
Figure 1. MAX5535 EV Kit Software Main Window (Load DACs Tab)
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MAX5535 Evaluation Kit
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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.
Figure 2. MAX5535 EV Kit Software Main Window (Operating Modes)
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MAX5535 Evaluation Kit
6 _______________________________________________________________________________________
Figure 3a. MAX5535 EV Kit Schematic (Sheet 1 of 2)
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MAX5535 Evaluation Kit
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Figure 3b. MAX5535 EV Kit Schematic (Sheet 2 of 2)
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MAX5535 Evaluation Kit
8 _______________________________________________________________________________________
Figure 4. MAX5535 EV Kit Component Placement Guide—Component Side
Figure 5. MAX5535 EV Kit PCB Layout—Component Side
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MAX5535 Evaluation Kit
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Figure 6. MAX5535 EV Kit PCB 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 are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Evaluates: MAX5510/11/14/15/20/21/24/25/30/31/34/35
MAX5535 Evaluation Kit
Revision History
NUMBER
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
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MAX5535EVKIT+