MAX5427EVKIT Maxim Integrated, MAX5427EVKIT Datasheet - Page 3

• Manufacturer Part Number: MAX5427EVKIT
• Description: Digital Potentiometer ICs Evaluation Kit for the MAX5427 MAX5428 MAX5429
• Manufacturer: Maxim Integrated

Specifications of MAX5427EVKIT

• Resistance: 100 kOhms
• Number Of Pots: Single
• Taps Per Pot: 32
• Wiper Memory: Non Volatile
• Digital Interface: Serial (2-Wire)
• Operating Supply Voltage: 5 V
• Supply Current: 1.5 uA
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

To set the power-on position of the wiper, press the
Program button. Checking the Disable Interface
checkbox disables the 2-wire interface, preventing fur-
ther unwanted adjustment. Refer to the One-Time
Programming section of the MAX5427/MAX5428/
MAX5429 data sheet for more details.
The Disable Parallel Port checkbox is used to reset
the digital potentiometer at power-up. Checking this
box forces all of the parallel port lines to a logic low
(0V), ensuring that the device is not powered through
the interface. To reset the device, do the following:
1) Turn off the power supply connected to VPP.
2) Turn off the power supply connected to VDD.
Figure 1. MAX5427 EV Kit Software Main Window
NOTE: THE MAIN WINDOW OF THE MAX5427 EV KIT SOFTWARE ALLOWS THE USER TO EASILY ADJUST AND PROGRAM THE MAX5427.
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Resetting the MAX5427
Program Control
MAX5427 Evaluation Kit
3) Check the Disable Parallel Port checkbox.
4) Disconnect any power supply connected to the H,
5) Turn on the power supply connected to VDD.
6) Turn on the power supply connected to VPP.
7) Uncheck the Disable Parallel Port checkbox.
The MAX5427 EV kit is a complete programming plat-
form for the MAX5427 digital potentiometer. Parallel
port signals are level translated through a MAX1840 to
ensure reliable operation. The EV kit also includes an
8-pin µMAX socket to ease the programming of multiple
devices.
W, and L pads.
Detailed Description
of Hardware
3