MAX5478EVKIT Maxim Integrated, MAX5478EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX5478EVKIT
• Description: Digital Potentiometer ICs Evaluation Kit/Evaluation System for the MAX5477/MAX5478/MAX5479
• Manufacturer: Maxim Integrated

Specifications of MAX5478EVKIT

• Resistance: 50 kOhms
• Number Of Pots: Dual
• Taps Per Pot: 256
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire, I2C)
• Operating Supply Voltage: 5 V
• Supply Current: 15 uA
• Supply Voltage - Max: 5.25 V
• Supply Voltage - Min: 2.7 V

• Windows 98/2000/XP computer and a USB port
• USB cable (to connect the computer’s USB port to
• 5V/100mA DC power supply
• Two ohmmeters
The MAX5478 EV kit is fully assembled and tested.
Follow the steps below to verify board operation. Do
not turn on the power supply until all connections
are completed:
1) Carefully connect the boards by aligning the 20-pin
2) Slide both CMODUSB command-module SW1 dip
3) Verify that shunts are installed across pins 1-2 of
4) Verify that a shunt is installed across pins 2-3 of
5) Verify that shunts are not installed on jumpers JU6
MAX5478 Evaluation Kit/Evaluation System
Note: Indicate that you are using the MAX5478 when contacting this component supplier.
2
DESIGNATION
TDK
the CMODUSB command module)
connector (J1) of the MAX5478 EV kit with the P3
20-pin header on the CMODUSB command mod-
ule. Gently press them together.
switches to the ON position (pullup resistors for I
bus). Ensure that jumper J1 is installed in position
1-2, setting the command module for 5V operation.
jumpers JU1, JU2, and JU3 (device address =
0x5E) on the MAX5478 EV kit.
jumper JU4 (write-protect disable) on the MAX5478
EV kit board.
and JU7 on the MAX5478 EV kit.
_______________________________________________________________________________________
JU1–JU4
JU6, JU7
JU5
C1
C2
J1
SUPPLIER
QTY
1
0
1
4
0
2
Recommended Equipment
0.1µF ±10%, 16V X7R ceramic
capacitor (0603)
TDK C1608X7R1C104K
N ot i nstal l ed , cer am i c cap aci tor ( 0603)
2 x 10 right-angle female receptacle
3-pin headers
Not installed, 2-pin header
2-pin headers
DESCRIPTION
847-803-6100
Quick Start
PHONE
Procedure
2
C
6) Use the INSTALL.EXE program on the CD-ROM
7) Connect the 5V DC power supply to the VDD and
8) Connect one ohmmeter across the LA and LW pads.
9) Connect the second ohmmeter across the LB and
10) Turn on the power supply.
11) Connect a USB cable from the computer’s USB port
12) Start the MAX5478 program by opening its icon in
13) Observe as the program automatically detects the
14) The MAX5478 EV kit is ready for additional testing.
The MAX5478 EV kit is an assembled and tested PC
board that evaluates the MAX5478 linear-taper dual digi-
tal potentiometer. Each potentiometer, A and B, has an
end-to-end resistance of 50kΩ and each wiper can be
programmed independently among 256 tap positions.
The MAX5478 features an internal nonvolatile memory
(EEPROM) used to store the wiper position for initializa-
DESIGNATION
provided to copy the files and create icons in the
Windows 98/2000/XP Start menu.
GND pads on the MAX5478 EV kit board.
WB pads.
to the CMODUSB command module. Note: Do not
connect a power source to the P1 connector on the
command module. The command module is pow-
ered through the USB port.
the Start menu.
address of the MAX5478 and starts the main program.
MAX5478EVKIT Component List
R1, R2
847-390-4405
U1
—
—
—
FAX
QTY
0
1
6
1
1
Component Supplier
Not installed, resistors (0805)
MAX5478EUD
(14-pin TSSOP)
Shunts (JU1–JU4, JU6, JU7)
MAX5478 EV kit PC board
Software disk (CD-ROM),
MAX5478 EV kit
Detailed Description
www.component.tdk.com
DESCRIPTION
of Hardware
WEBSITE