MAX15501 Evaluation Kit
Evaluates: MAX15500/MAX15501
General Description
The MAX15501 evaluation kit (EV kit) provides a proven
design to evaluate the MAX15501 analog output con-
ditioner that provides a programmable current up to
Q24mA,
or a voltage up to
Q12V
proportional to a con-
trol voltage signal. The EV kit also includes Windows
M
2000-, Windows XP
M
-,
and Windows Vista
M
-compatible
software that provides a simple graphical user interface
(GUI) for exercising the features of the MAX15501.
The MAX15501 EV kit comes with a MAX15501GTJ+
installed. Contact the factory for free samples of the pin-
compatible MAX15500GTJ+ to evaluate this device.
S
On-Board 16-Bit DAC
S
On-Board +2.5V (for MAX15501) and +4.096V
Features
(for MAX15500) Voltage References
S
Four Jumper-Selectable On-Board Sensing
Resistors (41.2I, 42.2I, 47.5I, and 48.7I)
S
Terminal Block Connector for the OUT, GND,
SENSEVP, and SENSEVN Signals
S
Windows 2000-, Windows XP-, and Windows Vista
(32-Bit)-Compatible Software
S
USB-PC Connection (Cable Included)
S
Proven PCB Layout
S
Fully Assembled and Tested
Ordering Information
PART
MAX15501EVKIT+
TYPE
EV Kit
+Denotes
lead(Pb)-free and RoHS compliant.
Component List
DESIGNATION
C1, C12, C14
QTY
3
DESCRIPTION
10FF
Q20%,
16V X5R ceramic
capacitors (1206)
Murata GRM31CR61C106M
22pF
Q5%,
50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H220J
0.033FF
Q10%,
16V X5R
ceramic capacitor (0603)
Taiyo Yuden EMK107BJ333KA
0.1FF
Q10%,
16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
1FF
Q10%,
16V X5R ceramic
capacitors (0603)
Murata GRM188R71C105K
10pF
Q5%,
50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H100J
DESIGNATION
C30
QTY
1
DESCRIPTION
4.7FF
Q10%,
16V X5R ceramic
capacitor (0805)
Murata GRM21BR61C475K
0.1FF
Q10%,
25V X7R ceramic
capacitors (0603)
Murata GRM188R71E104K
10FF
Q20%,
25V X5R ceramic
capacitors (1206)
Murata GRM31CR61E106K
Not installed, capacitor (0603)
Diodes (SOT23)
Central Semi CMPD7000
USB type-B right-angle female
receptacle
20-pin header (2 x 10)
4-position terminal block
C2, C3
2
C34, C37
2
C4
C5–C10, C17,
C18, C24–C29,
C31, C32, C33,
C35, C38, C49,
C50
C11, C13, C19–
C23, C36, C39–
C46
C15, C16
1
C47, C48
CC
2
0
6
1
1
1
21
D1–D6
J1
J2
J3
JU1, JU2, JU3,
JU6–JU10, JU12–
JU16, JU19,
JU20, JU25,
JU26, JU35
16
2
18
3-pin headers
Windows, Windows XP, and Windows Vista are registered
trademarks of Microsoft Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-4925; Rev 0; 8/09
MAX15501 Evaluation Kit
Evaluates: MAX15500/MAX15501
Component List (continued)
DESIGNATION
JU4, JU5
JU18
JU22, JU23,
JU24, JU27–JU34
L1
R1, R2
R3
R4
R5
R6, R7
R8
R10
R11
R12–R16
RS1
RS2
RS3
RS4
U1
QTY
2
1
11
1
2
1
1
1
2
1
1
1
0
1
1
1
1
1
DESCRIPTION
4-pin headers
5-pin header
2-pin headers
Ferrite bead
TDK MMZ1608R301A (0603)
27I
Q5%
resistors (0603)
1.5kI
Q5%
resistor (0603)
470I
Q5%
resistor (0603)
2.2kI
Q5%
resistor (0603)
10kI
Q5%
resistors (0603)
5.1I
Q5%
resistor (0805)
169kI
Q1%
resistor (0603)
100kI
Q1%
resistor (0603)
Not installed, resistor—short
(PC trace) (0603)
48.7I
Q0.1%
sense resistor
47.5I
Q0.1%
sense resistor
42.2I
Q0.1%
sense resistor
41.2I
Q0.1%
sense resistor
Analog output conditioner
(32 TQFN-EP*)
Maxim MAX15501GTJ+
Adjustable output LDO
regulator (5 SC70)
Maxim MAX8512EXK+T
LDO regulator (5 SC70)
Maxim MAX8511EXK25+T
USB-to-UART converter
(32 TQFP)
Y2
Y3
—
—
*EP
= Exposed pad.
1
0
32
1
Y1
1
U8
U9–U14
U15
U16
1
6
1
1
U6
1
U5
1
DESIGNATION
QTY
DESCRIPTION
93C46 type 3-wire EEPROM
16-bit architecture (8 SO)
Microcontroller (68 QFN-EP*)
Maxim MAXQ2000-RAX+
4.096V voltage reference
(8 SO)
Maxim MAX6126AASA41+
16-bit DAC (16 TQFN)
Maxim MAX5138BGTE+
Level translator (10
FMAX
M
)
Maxim MAX1840EUB+
5V LDO (6 TDFN)
Maxim MAX5084ATT+
2.5V voltage reference (8 SO)
Maxim MAX6126AASA25+
16MHz crystal
Hong Kong X’tals
SSM16000N1HK188F0-0
6MHz crystal
Hong Kong X’tals
SSL60000N1HK188F0-0
Not installed, crystal
Shunts
PCB: MAX15501 EVALUATION
KIT+
U7
1
U2
1
U3
U4
1
1
Component Suppliers
SUPPLIER
Central Semiconductor Corp.
Hong Kong X’tals Ltd.
Murata Electronics North America, Inc.
Taiyo Yuden
TDK Corp.
PHONE
631-435-1110
852-35112388
770-436-1300
800-348-2496
847-803-6100
WEBSITE
www.centralsemi.com
www.hongkongcrystal.com
www.murata-northamerica.com
www.t-yuden.com
www.component.tdk.com
Note:
Indicate that you are using the MAX15501 when contacting these component suppliers.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
2
Maxim Integrated
MAX15501 Evaluation Kit
Evaluates: MAX15500/MAX15501
Quick Start
•
•
•
•
•
MAX15501 EV kit (USB cable included)
±25V/100mA DC power supply
User-supplied Windows 2000, Windows XP, or
Windows Vista PC with a spare USB port
One digital voltmeter
One digital current meter
document included with the software for additional
information.
6)
7)
8)
9)
Voltage Mode
Connect pin 1 (OUTPUT) to pin 3 (SENSEVP) of the
J3 connector with a cable.
Connect pin 2 (AGND) to pin 4 (SENSEVN) of the J3
connector with a cable.
Connect the +25V DC supply to the AVDD pad.
Connect the -25V DC supply to the AVSS pad.
Required Equipment
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.
The MAX15501 EV kit is fully assembled and test-
ed. Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1)
Visit
www.maximintegrated.com/evkitsoftware
to
download the latest version of the EV kit software,
15501Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the tempo-
rary folder. The program files are copied and icons
are created in the Windows
Start | Programs
menu.
Verify that all jumpers are in their default positions,
as shown in Table 3.
Connect the USB cable from the PC to the EV kit
board. A
New Hardware Found
window pops up
when installing the USB driver for the first time.
If a window is not seen that is similar to the one
described above after 30s, remove the USB cable
from the board and reconnect it. Administrator privi-
leges are required to install the USB device driver
on Windows.
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\MAX15501
(default installation
directory) using the
Browse
button. During device
driver installation, Windows may show a warning
message indicating that the device driver Maxim
uses does not contain a digital signature. This is
not an error condition and it is safe to proceed
with installation. Refer to the USB_Driver_Help.PDF
10) Connect the ground terminal of the DC supply to the
AGND pad.
11) Turn on the power supply.
12) Start the MAX15501 EV kit software by opening its
icon in the
Start | Programs
menu. The EV kit soft-
ware main window appears, as shown in Figure 1.
13) Wait approximately 5s for the program to automati-
cally detect the EV kit.
14) Press the
Set
button in the
DAC
group box to set the
DAC output to 0V.
15) Uncheck the
Disable Analog Output (OUTDIS)
checkbox to enable the MAX15501.
16) Select
101: Bipolar Voltage:
Q10V
in the
Mode
drop-down list.
17) Use the voltmeter to verify that the output voltage on
pin 1 of J3 is approximately -12V.
18) Move the scrollbar in the
DAC
group box all the way
to the right and press the
Set
button (DAC full-scale
output = +2.5V).
19) Use the voltmeter to verify that the output voltage on
pin 1 of J3 is approximately +12V.
Current Mode
By default, the on-board 41.2I sensing resistor is
selected.
6)
Connect a 750I resistor load in series with a current
meter between pin 1 (OUTPUT) and pin 2 (AGND) of
the J3 connector.
Connect pin 1 (OUTPUT) to pin 3 (SENSEVP) of the
J3 connector with a cable.
Connect pin 2 (AGND) to pin 4 (SENSEVN) of the J3
connector with a cable.
Connect the +25V DC supply to the AVDD pad.
Procedure
2)
3)
4)
5)
7)
8)
9)
10) Connect the -25V DC supply to the AVSS pad.
11) Connect the ground terminal of the DC supply to the
AGND pad.
3
Maxim Integrated
MAX15501 Evaluation Kit
Evaluates: MAX15500/MAX15501
12) Turn on the power supply.
13) Start the MAX15501 EV kit software by opening its
icon in the
Start | Programs
menu. The EV kit soft-
ware main window appears, as shown in Figure 1.
14) Wait approximately 5s for the program to automati-
cally detect the EV kit.
15) Press the
Set
button in the
DAC
group box to set the
DAC output to 0V.
16) Uncheck the
Disable Analog Output (OUTDIS)
checkbox to enable the MAX15501.
17) Select
101: Bipolar Voltage:
Q10V
in the
Mode
drop-down list.
18) Use the voltmeter to verify that the output voltage on
pin 1 of J3 is approximately -12V.
19) Move the scrollbar in the
DAC
group box all the way
to the right and press the
Set
button (DAC full scale
output = +2.5V).
20) Use the voltmeter to verify that the output voltage on
pin 1 of J3 is approximately +12V.
Select the
4.096V
option in the
FS Select
drop-down list
when evaluating the MAX15500 on the MAX15501 EV kit.
When the
20% above FS
option is selected in the
FS Mode
drop-down list, the FSMODE pin of the
MAX15501 is set to logic-low, which sets the output volt-
age to120%FS when the input voltage is equal to the full-
scale value. When the
5% above FS
option is selected
in the
FS Mode
drop-down list, the FSMODE pin of the
MAX15501 is set to logic-high, which sets the output
voltage to 105%FS when the input voltage is equal to the
full-scale value.
Check the
Thermal Self Protect
checkbox to turn on the
thermal protection of the MAX15501.
Uncheck the
Disable Analog Output (OUTDIS)
check-
box to set the
OUTDIS
pin to logic-high and enable
the output of the MAX15501. To disable the output of
the MAX15501, check the
Disable Analog Output
(OUTDIS)
checkbox.
Press the
Read
button in the
Configuration
group box
to read the settings.
In the
Status
group box, the
Read Back Error
group
box displays the fault conditions from the readback error
register of the MAX15501. The
Flag
group box displays
the status of the
ERROR
and the
READY
pins. Press the
Read
button to update the
Status
group box. Check the
Automatic Read
checkbox to automatically update the
Status
group box every second.
During power-up,
ERROR
can go low and the brownout
register is set. Users need to read out the error register
twice to clear all the error register bits and reset
ERROR
to high.
The
Read/Write Command
group box displays the last
command and data sent or received from the MAX15501
or the on-board DAC.
To send an SPIK command to the MAX15501 or the on-
board DAC, click on the appropriate radio button, enter
the SPI command (hex value) in the
MOSI Data
edit box,
and press the
Send Command
button.
Detailed Description of Software
The main window of the evaluation software is shown in
Figure 1. The software can be used to control both the
on-board 16-bit DAC and the MAX15501.
In the
DAC
group box, use the scrollbar to set the 16-bit
DAC data. The adjacent edit box at the left of the scroll-
bar displays the equivalent expected output-voltage
values of the on-board DAC. The user can also set the
output-voltage values of the DAC by typing the desired
voltage value in the edit box and pressing the Enter key.
Press the
Set
button to update the DAC output.
The
Configuration
group box has all the controls for the
MAX15501.
To set the operating mode of the MAX15501, select the
appropriate mode in the
Mode
drop-down list.
The
Brown out Threshold
drop-down list sets the
brownout threshold for error reporting.
When evaluating the MAX15501 on the MAX15501 EV kit,
select the
2.5V
option from the
FS Select
drop-down list.
Status
DAC
Read/Write Command
Configuration
SPI is a trademark of Motorola, Inc.
4
Maxim Integrated
MAX15501 Evaluation Kit
Evaluates: MAX15500/MAX15501
Figure 1. MAX15501 EV Kit Software Main Window
Maxim Integrated
5
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