19-4493; Rev 0; 3/09
MAX5661 Evaluation Kit/Evaluation System
General Description
The MAX5661 evaluation kit (EV kit) is a fully assembled
and tested circuit board that evaluates the MAX5661,
single, 16-bit DAC with precision high-voltage ampli-
fiers. The MAX5661 EV kit also includes Windows
®
98SE/2000/XP-compatible software, which provides a
simple graphical user interface (GUI) for exercising the
MAX5661’s features.
The MAX5661 evaluation system (EV system) consists
of a MAX5661 EV kit and a Maxim CMAXQUSB+ serial
interface board.
The CMAXQUSB+ board connects to a PC’s USB port
and provides an SPI™ interface that is compatible with
the MAX5661.
Order the complete EV system (MAX5661EVCMAXQU+)
for a comprehensive evaluation of the MAX5661 using a
PC. Order the EV kit (MAX5661EVKIT+) if the CMAXQUSB+
command module has already been purchased with a
previous Maxim EV system or if you already have a
MAX5661-compatible SPI interface.
The EV kit includes a preinstalled MAX5661GCB+.
Windows is a registered trademark of Microsoft Corp.
SPI is a trademark of Motorola, Inc.
Features
o
10-Bit Programmable Full-Scale Output
Adjustment for Up to ±25% Over Range
o
Programmable Voltage Output
Unipolar Range: 0 to +10.24V ±25%
Bipolar Range: ±10.24V ±25%
o
Programmable Current Output
Unipolar Range: 0 to 20.45mA
Unipolar High Range: 3.97mA to 20.45mA
o
Flexible Analog Supplies
±13.48V to ±15.75V for Voltage Output
+13.48V to +40V for Current Output
o
Proven PCB Layout
o
Windows 98SE/2000/XP-Compatible Evaluation
Software
o
Fully Assembled and Tested
o
EV System Includes USB Connectivity
Evaluate: MAX5661
Ordering Information
PART
MAX5661EVKIT+
MAX5661EVCMAXQU+
TYPE
EV Kit
INTERFACE
User-supplied SPI interface
EV
CMAXQUSB+ board
System
+Denotes
lead(Pb)-free and RoHS compliant.
Note:
The MAX5661 EV kit software is included with the MAX5661
EV kit but is designed for use with the complete EV system. The
EV system includes both the Maxim CMAXQUSB+ board and the
EV kit. If the Windows software will not be used, the EV kit board
can be purchased without the Maxim CMAXQUSB+ board.
Component Lists
MAX5661 EV System
PART
MAX5661EVKIT+
CMAXQUSB+
QTY
1
1
DESCRIPTION
MAX5661 EV kit
Serial-interface board
C9, C16
2
C8
1
DESIGNATION
QTY
DESCRIPTION
3300pF ±5%, 50V C0G ceramic
capacitor (0603)
TDK C1608C0G1H332K
10µF ±20%, 50V X7R ceramic
capacitors (2220)
TDK C5750X7R1H106K
10µF ±20%, 16V X7R ceramic
capacitors (1206)
TDK C3216X7R1C106K
1µF ±10%, 16V X7R ceramic
capacitor (0805)
TDK C2012X7R1C105K
1µF ±10%, 16V X7R ceramic
capacitor (0603)
TDK C1608X7R1C105K
30V Schottky diode (SOD323)
Central Semi CMDSH2-4L
33V zener diode (SOD123)
Central Semi CMHZ5257B
MAX5661 EV Kit
DESIGNATION
C1, C4, C6,
C11, C13
C2, C3
QTY
5
DESCRIPTION
0.1µF ±10%, 16V X7R ceramic
capacitors (0402)
TDK C1005X7R1C104K
0.1µF ±10%, 50V X7R ceramic
capacitors (0603)
TDK C1608X7R1H104K
0.022µF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H223K
2.2µF ±10%, 6.3V X5R ceramic
capacitor (0603)
TDK C1608X5R0J225K
C10, C15,
C17, C18
C12
4
1
2
C14
1
C5
1
D1
D2
1
1
C7
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.
MAX5661 Evaluation Kit/Evaluation System
Evaluate: MAX5661
Component List (continued)
DESIGNATION
J1
J2
JU1–JU4, JU6, JU7,
JU8, JU10, JU11
JU5, JU12
R1
R5, R8, R10
R7, R9, R13, R14
R11
R12
R15
U1
U2
—
—
QTY
1
1
9
2
1
3
4
1
1
1
1
1
7
1
DESCRIPTION
2 x 20 right-angle socket
6-pin header
2-pin headers
3-pin headers
499_ ±1%, 1/2W resistor
(through hole)
47_ ±5% resistors (0603)
47k_ ±5% resistors (0402)
1.3k_ ±5% resistor (0402)
2k_ ±1%, 1/2W resistor
(through hole)
2k_ ±5% resistor (0402)
Maxim MAX5661GCB+ (64 LQFP)
Maxim MAX6241AESA (8 SO)
Shunts
PCB: MAX5661 Evaluation Kit+
SUPPLIER
Central
Semiconductor
Corp.
TDK Corp.
Component Suppliers
PHONE
631-435-1110
847-803-6100
WEBSITE
www.centralsemi.com
www.component.tdk.com
Note:
Indicate that you are using the MAX5661 when contacting
these component suppliers.
MAX5661 EV Kit Files
FILE
INSTALL.EXE
MAX5661.EXE
FTD2XX.INF
UNINST.INI
DESCRIPTION
Installs the EV kit files on
your computer
Application program
USB device driver file
Uninstalls the EV kit software
TROUBLESHOOTING_USB.PDF USB driver installation help file
Quick Start
Recommended Equipment
•
The MAX5661 EV system
MAX5661 EV kit
CMAXQUSB+ command module (USB cable in-
cluded)
One +5V power supply for VCC (VCC power supply)
One +15V power supply for VDDI and VDDV (VDD
power supply)
One -15V power supply for VSSV (VSS power supply)
Two digital voltage meters (OUTI voltage meter and
OUTV voltage meter)
One digital current meter (OUTI current meter)
A user-supplied Windows 98SE/2000/XP PC with a
spare USB port
2) Install the MAX5661 EV kit software on your com-
puter by running the INSTALL.EXE program inside
the temporary folder. The program files are copied
and icons are created in the Windows
Start
menu.
3) Preset the VCC power supply to +5V. Turn off the
power supply.
4) Preset the VDD power supply to +15V. Turn off the
power supply.
5) Preset the VSS power supply to -15V. Turn off the
power supply.
Do not turn on the power supply until all connec-
tions are completed.
6) On the CMAXQUSB+ command module, ensure the
shunt of JU1 is in the 5V position. Refer to
CMAXUSB+ user’s guide.
7) On the EV kit, make sure the shunts of all jumpers
are in positions, as shown in Table 1.
8) Carefully connect the boards by aligning the
MAX5661 EV kit’s 40-pin connector with the
CMAXQUSB+ board’s 40-pin connector. Gently
press them together. The two boards should be
flush against each other.
9) Connect the positive terminal of the VCC power
supply to the VCC pad on the EV kit and connect
the negative terminal of the VCC power supply to
the PGND pad on the EV kit.
•
•
•
•
•
•
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
1) Visit
www.maxim-ic.com/evkitsoftware
to down-
load the most recent revision of the EV kit software,
5661Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and unzip the 5661Rxx.ZIP file
2
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MAX5661 Evaluation Kit/Evaluation System
Table 1. MAX5661 EV Kit Jumper Functions
JUMPER
JU1
JU2
LABELED
CLR
LADC
POSITION
Open*
1-2
Open*
1-2
Open, Open*
JU4, JU3
CFG1,
CFG0
Open, 1-2
1-2, Open
1-2, 1-2
JU5
JU6
JU7
JU8
JU10
JU11
JU12
4TO20MA
ILD
VCLD
VRLD
SEN+
SEN-
VICV
1-2
2-3*
Open
1-2*
Open
1-2*
Open
1-2*
Open
1-2*
Open
1-2*
1-2*
2-3
Normal operation
Loads DAC register from DAC clear register or zero
Normal operation
Loads DAC register from DAC input register
Outputs controlled by serial interface
OUTV on, set to bipolar mode
OUTI on, set to 0 to 20mA range
Both outputs disabled
Selects OUTI range from 3.97mA to 20.45mA
Selects OUTI range from 0 to 20.45mA
OUTI without loading resister
OUTI with 500Ω loading resistor
OUTV without loading capacitor
OUTV with 1µF loading capacitor
OUTV without loading resistor
OUTV with 2kΩ loading resistor
Connects voltage-sense input SEN+ remotely
Connects voltage-sense input SEN+ to the top terminal of the loading resistor on the board
Connects voltage-sense input SEN- remotely
Connects voltage-sense input SEN- to GND on the board
VDDC connects to VDDI
VDDC connects to VDDV
FUNCTION
Evaluate: MAX5661
*Indicates
default position.
10) Connect the positive terminal of the VDD power
supply to both the VDDI and the VDDV pads on the
EV kit and connect the negative terminal of the VDD
power supply to the PGND pad on the EV kit.
11) Connect the NEGATIVE terminal of the VSS power
supply to the VSSV pad on the EV kit and connect
the POSITIVE terminal of the VSS power supply to
the PGND pad on the EV kit.
12) Connect the positive lead of the OUTI voltage meter
to the OUTI pad on the EV kit and connect the neg-
ative lead of the OUTI voltage meter to the GND
pad on the EV kit.
13) Connect the positive lead of the OUTV voltage
meter to the OUTV pad on the EV kit and connect
the negative lead of the OUTV voltage meter to the
GND pad on the EV kit, which is above the OUTV
pad.
14) Connect the positive lead of the OUTI current meter
to the OUTI pad on the EV kit and connect the neg-
ative lead of the current meter to the ILOAD pad on
the EV kit. Remove the shunt of JU6.
15) Turn on all three power supplies. Sequence is not
important.
16) Connect the USB cable from the PC to the
CMAXQUSB+ board.
A Building Driver Database
window should pop up in addition to a
New
Hardware Found
message if this is the first time
the EV kit board is connected to the PC. If you do
not see a window that is similar to the one
described above after 30s, try removing the USB
cable from the CMAXQUSB+ and reconnect it.
Administrator privileges are required to install the
USB device driver on Windows 2000 and XP. Refer
to the document TROUBLESHOOTING_USB.PDF
included with the software if you have any problems
during this step.
17) 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.
3
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MAX5661 Evaluation Kit/Evaluation System
Evaluate: MAX5661
Specify the location of the device driver to be
C:\Program Files\MAX5661
(default installation
directory) using the
Browse
button.
18) Start the MAX5661 EV kit software by opening its
icon in the
Start
menu.
19) Check the
outv_on
checkbox then press the
Execute Write
button.
20) Enter 0xBE80 in the
Input of Shift Register
edit
box and select
Actions | Load DAC Input Register
and DAC Register from Shift Register
next to the
Input of Shift Register
group box. Verify the OUTV
voltage is approximately 5.0V.
Input Register, DAC Register, Clear Register,
and
Input of Shift Register.
Control_Bits Register
The
Control_Bits Register
group box contains 14 indi-
vidual control bits, 4 of them are read only. Under the
Execute Read
button, there is one set of 14 grayed-out
checkboxes that represent the read-back status of those
14 control bits. Under the
Execute Write
button, there is
another set of 14 checkboxes for the user to configure
the IC. Four of them have been grayed out since they are
read only. The name of each checkbox is listed in
between the two columns of checkboxes. On the right
side are the detailed descriptions for each checkbox.
A fault status indicator is located on the right side of the
last three checkboxes. It indicates the current status of
the MAX5661’s
FAULT
pin and it is updated every sec-
ond. It only works if the
out_fault_en
checkbox has
been checked.
Detailed Description of Software
The evaluation software’s main window is shown in
Figure 1. There are five register group boxes and one
Actions
drop-down list in the main window. The five
register group boxes are
Control_Bits Register, DAC
Figure 1. MAX5661 Evaluation Software Main Window
4
_______________________________________________________________________________________
MAX5661 Evaluation Kit/Evaluation System
DAC Input Register, DAC Register, and
Clear Register Group Boxes
DAC Input Register, DAC Register,
and
Clear
Register
display the current contents of these regis-
ters. Any change in the
Actions
drop-down list updates
these registers.
CMAXQUSB+ Board
The CMAXQUSB+ serial interface board is a command
module that receives commands from a PC through the
USB port to create an SPI or SMBus™/I
2
C-compatible
interface.
CMAXQUSB+ Power Supply
Jumper JU1 of the CMAXQUSB+ board selects
between the 5V DC voltage that comes from the USB
connector and the MAX8511 regulated 2.5V or 3.3V
output voltages. Set the CMAXQUSB+ jumper JU1 at
the 5V position to evaluate the MAX5661 EV kit.
Evaluate: MAX5661
Input of Shift Register Edit Box and
Actions Drop-Down List
Input the value in the
Input of Shift Register
edit box
and use the
Actions
drop-down list to choose the
desired action as shown in Figure 2.
Detailed Description of Hardware
MAX5661 EV System
The MAX5661 EV system consists of a MAX5661 EV kit
and the Maxim CMAXQUSB+ serial interface board.
MAX5661 EV Kit
The MAX5661 EV kit board provides a proven layout for
evaluating the MAX5661. The EV kit comes with
MAX5661GCB+.
SMBus is a trademark of Intel Corp.
Figure 2. Actions Drop-Down List
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5
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