MAX9939EVKIT+ Maxim Integrated Products, MAX9939EVKIT+ Datasheet - Page 3

• Manufacturer Part Number: MAX9939EVKIT+
• Description: KIT EVAL FOR MAX9939
• Manufacturer: Maxim Integrated Products

Specifications of MAX9939EVKIT+

• Channels Per Ic: 2 - Dual
• Amplifier Type: Programmable Gain
• Output Type: Differential
• Slew Rate: 9 V/µs
• Current - Output / Channel: 70mA
• Operating Temperature: -40°C ~ 125°C
• Current - Supply (main Ic): 3.4mA
• Voltage - Supply, Single/dual (±): 2.9 V ~ 5.5 V
• Board Type: Fully Populated
• Utilized Ic / Part: MAX9939
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -

Before beginning, the following equipment is needed:
• A user-supplied Windows 2000/XP/Vista-compatible
• Signal generator
• Oscilloscope
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 operating
system.
The MAX9939 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on power supplies until all
connections are completed.
1) Visit
2) Install the EV kit software on your computer by run-
3) Verify that a shunt is installed across pins 2-3 of
4) Connect the USB cable from the PC to the EV kit
5) Follow the directions of the Add New Hardware
PC with a spare USB port
load the latest version of the EV kit software,
9939Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
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.
jumper JU1 (USB powered).
board. A New Hardware Found window pops up
when installing the USB driver for the first time. If a
window that is similar to the one described above is
not seen after 30s, remove the USB cable from the
board and reconnect it. Administrator privileges are
required to install the USB device driver on
Windows.
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\MAX9939 (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 doc-
www.maxim-ic.com/evkitsoftware
_______________________________________________________________________________________
Recommended Equipment
Quick Start
Procedure
to down-
MAX9939 Evaluation Kit
6) Start the EV kit software by opening its icon in the
7) Set the signal generator to produce an output sig-
8) Connect the signal generator to the IN_DIFF BNC
9) Connect the oscilloscope to the OUT_DIFF BNC
10) Enable the signal generator.
11) Adjust the gain and offset settings using the provided
12) Monitor and verify the output with the oscilloscope.
The MAX9939 EV kit software GUI (Figure 1) is a
Windows program that provides a convenient means to
control the MAX9939. By updating the Gain/Offset
Setting group box or Shutdown checkbox, the correct
SPI-compatible write operation is generated to update
the internal registers of the MAX9939. Note, updating
only the select radio group does not modify the internal
registers.
The Select radio group of the MAX9939 EV kit GUI con-
trols the SEL bit to select which internal register is writ-
ten to. Select Gain to write to the gain register or select
Offset to write to the input offset voltage trim register.
Figure 1. MAX9939 EV Kit Software Main Window
Detailed Description of Software
ument included with the software for additional
information.
Start | Programs menu. The EV kit software main
window appears, as shown in Figure 1. Observe as
the program automatically detects the MAX9939 EV
kit and starts the main program.
nal of 25mV peak-to-peak at a frequency of 1kHz.
connector.
connector.
software. See the Detailed Description of Software
section to evaluate the features of the EV kit.
Select
3