Software Setup

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file located on the TPL0401 product page on www.ti.com. Download the zip file and extract its contents to

a desired location on your PC. You will see an executable file called TPL0401_GUI.exe in the extracted

folder. Double click the file to open it and the GUI program should launch. IMPORTANT: Before launching

the GUI please make sure the TPL0401EVM is setup in the desired mode and connected to the PC

through a USB port.

Figure 1. GUI for DPOT Control

There are three methods to adjust the value of the TPL0401A/B. Start by clicking one of the buttons

circled in GREEN to select the corresponding TPL0401 device.

To adjust the tap value directly simply click the box that says tap and you will be prompted to input a tap

value between 0 and 127. After typing in the desired value press enter and the tap value will be sent to

the TPL0401A and the GUI will reflect the value you just entered.

To adjust the TPL0401 by inputting a wiper to low terminal resistance, click the box that says W-L

Resistance. You will then be prompted to input a value between 0 and 10,000 ohms; press enter after you

have input a value. The GUI will use the theoretical resistance values to find a tap that is closest to the

value that was input.

NOTE:

All W-L resistance values are typical values; the actual value will be within 20% of the

displayed value

4

TPL0401EVM

SLIU008

– September 2011

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