MAX5387EVKIT+ Maxim Integrated, MAX5387EVKIT+ Datasheet - Page 4

• Manufacturer Part Number: MAX5387EVKIT+
• Description: Digital Potentiometer Development Tools Maxim Evaluation Kit
• Manufacturer: Maxim Integrated

Specifications of MAX5387EVKIT+

• Product: Evaluation Kits
• Tool Is For Evaluation Of: MAX5387
• Resistance: 10 kOhms
• Operating Supply Voltage: 2.6 V to 5.5 V
• Description/function: Dual Low Voltage Digital Potentiometer
• Interface Type: 2 Wire, Serial

MAX5387 Evaluation System
Table 1. Jumper Configuration
*Default position.
The MAX5387 EV kit software GUI shown in Figure 1 is
a Windows program that provides a convenient means
to control two MAX5387 dual potentiometers. Use the
mouse or press the Tab key to navigate through the GUI
controls. The correct SMBusK/I
generated to update the MAX5387 internal memory reg-
isters when any of these controls are executed.
The EV kit software features window tabs to select and
control two MAX5387 (U1_MAX5387, U2_MAX5387)
dual on-board digital potentiometers and two unpopu-
lated MAX5392 (U3_MAX5392, U4_MAX5392) digital
potentiometers. Status indicators (Status1 and Devices
Found) are available to indicate that the EV kit is opera-
tional and to display the total number of valid MAX5387
and MAX5392 devices populated on the EV kit. The
SMBus is a trademark of Intel Corp.
4
Detailed Description of Software
______________________________________________________________________________________
JUMPER
JU18
JU19
JU20
JU21
JU1
JU2
JU3
JU4
JU5
JU6
JU7
JU8
JU9
Graphical User Interface (GUI) Panel
SHUNT POSITION
Not installed*
Not installed
Not installed
Not installed
Not installed
Not installed
Not installed
Not installed
Not installed
Installed*
Installed*
Installed*
Installed*
Installed*
Installed*
Installed*
Installed*
Installed
1-3*
2-3*
2-3*
2-3*
1-2
1-4
2
C write operations are
VPOWER = 5V
VPOWER = 3.3V
VPOWER = 2.6V
1.7V LDO disabled
1.7V LDO enabled
MAX5387 HA disconnected from the U1 VDD voltage source
MAX5387 HA connected to the U1 VDD voltage source
MAX5387 LA disconnected from GND
MAX5387 LA connected to GND
MAX5387 HB disconnected from the U1 VDD voltage source
MAX5387 HB connected to the U1 VDD voltage source
MAX5387 LB disconnected from GND
MAX5387 LB connected to GND
U1 device address = 0x50 (see Table 4)
MAX5387 HA disconnected from the U2 VDD voltage source
MAX5387 HA connected to the U2 VDD voltage source
MAX5387 LA disconnected from GND
MAX5387 LA connected to GND
MAX5387 HB disconnected from the U2 VDD voltage source
MAX5387 HB connected to the U2 VDD voltage source
MAX5387 LB disconnected from GND
MAX5387 LB connected to GND
DEVICES group box indicates components U1–U4 cur-
rent ID address and the last write operation Command
Sent and Data Sent indicators.
Additional software features can be evaluated by using
the pulldown menu bar. The software has a demo mode
that is available by selecting the Options | Demo Mode
menu item. When in demo mode, all software communi-
cation to the EV kit hardware is disabled and most of the
software’s GUI is functional. This feature enables a user
to evaluate the software without hardware connectivity.
By default, the EV kit software configures the MINIQUSB+
interface board’s 2-wire communication speed to 400kHz.
The speed can be reduced to 100kHz, if required, by
selecting the Options | 2-Wire Speed | 100kHz menu
item. This configuration could be required if slower
2-wire devices are connected to the EV kit’s SCL and
SDA J1 header.
EV KIT FUNCTION