Datasheet

3Maxim Integrated
Evaluates: MAX15500/MAX15501
MAX15501 Evaluation Kit
Quick Start
Required Equipment
• 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
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
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.
2) 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.
3) Verify that all jumpers are in their default positions,
as shown in Table 3.
4) 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.
5) 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
document included with the software for additional
information.
Voltage Mode
6) Connect pin 1 (OUTPUT) to pin 3 (SENSEVP) of the
J3 connector with a cable.
7) Connect pin 2 (AGND) to pin 4 (SENSEVN) of the J3
connector with a cable.
8) Connect the +25V DC supply to the AVDD pad.
9) Connect the -25V DC supply to the AVSS pad.
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.
7) Connect pin 1 (OUTPUT) to pin 3 (SENSEVP) of the
J3 connector with a cable.
8) Connect pin 2 (AGND) to pin 4 (SENSEVN) of the J3
connector with a cable.
9) Connect the +25V DC supply to the AVDD pad.
10) Connect the -25V DC supply to the AVSS pad.
11) Connect the ground terminal of the DC supply to the
AGND pad.