MAX5393EVMINIQU+ Maxim Integrated, MAX5393EVMINIQU+ Datasheet - Page 4

• Manufacturer Part Number: MAX5393EVMINIQU+
• Description: Digital Potentiometer Development Tools MAX5393 Eval Kit
• Manufacturer: Maxim Integrated
• Series: MAX5391, MAX5393r

Specifications of MAX5393EVMINIQU+

• Rohs: yes
• Product: Evaluation Systems
• Tool Is For Evaluation Of: MAX5393
• Resistance: 50 kOhms
• Operating Supply Voltage: 1.7 V to 5.25 V
• Interface Type: 3 Wire, Serial, USB

MAX5393 Evaluation System
Table_1._Jumper_Configuration
*Default position.
The MAX5393 EV kit software GUI shown in Figure 1 is
a Windows program that provides a convenient means
to control the MAX5393 dual potentiometer. Use the
mouse or press the Tab key to navigate through the GUI
controls. The correct SPI write operations are generated
to update the MAX5393 internal memory registers when
any of these controls are executed.
The software divides the EV kit functions into group
boxes. The Interface group box indicates the EV kit
Status and the last write operation Command_ Sent
and Data_ Sent indicators. This data confirms proper
device operation. The Device_ Connected combo box
selects the Maxim part being evaluated and enables
the Update_ Pot_ A_ and_ B checkbox function when
choosing the MAX5393 option from the list. The Default
button programs both potentiometers to their midscale
4_ _ _______________________________________________________________________________________
Detailed Description of Software
JUMPER
JU12
JU13
JU14
JU15
JU19
JU20
JU1
Graphical User Interface (GUI) Panel
SHUNT_POSITION
Not installed
Not installed
Not installed
Not installed
Not installed
Installed*
Installed*
Installed*
Installed*
Installed*
1-2*
1-3*
2-3
1-2
1-4
1.7V LDO output disabled
1.7V LDO output enabled
MAX5393 HA disconnected from U3 VDD voltage source
MAX5393 HA connected to U3 VDD voltage source
MAX5393 LA disconnected from GND
MAX5393 LA connected to GND
MAX5393 HB disconnected from U3 VDD voltage source
MAX5393 HB connected to U3 VDD voltage source
MAX5393 LB disconnected from GND
MAX5393 LB connected to GND
MAX5393 VDD = 1.7V
MAX5393 VDD voltage dependent on jumper JU20 configuration
VPOWER = 5V
VPOWER = 3.3V
VPOWER = 2.6V
positions. The lower Potentiometer_A and Potentiometer_
B group boxes provide controls to change the respective
wiper positions. The main window’s bottom status bar
provides the USB interface circuit communication status.
Upon startup, the EV kit software automatically searches
for the USB interface board’s circuit connection. In the
Interface group box, the Device_Connected combo box
allows the user to select the proper part being evalu-
ated. Upon selection of the device being evaluated, the
Update_Pot_A_and_B checkbox is enabled/disabled. The
EV kit enters the normal operating mode when the USB
connection is detected and the part has been selected.
Since the MAX5393 does not have read capability, all
of the edit boxes are set to question marks (??) and the
Potentiometer_ track bars are set to midscale. If the
USB connection is not detected, the software prompts
the user to retry, exit the program, or enter the demo
mode.
EV_KIT_FUNCTION
Software Startup