256-Position I
2
C Compatible
Dual, +15V, Digital Potentiometer
Evaluation Board User Manual
AD5282
General Overview
This evaluation board provides the user with a simple and quick solution to evaluate digital potentiometers from
Analog Devices. Only one digital pot can be placed on the board at a time. For the user’s convenience, a general
purpose opamp, 2.5V voltage reference, and two power MOSFETs are included and can be configured in a variety of
flexible configurations. The digital pot can be used by itself or in conjunction with these other components.
How to Get Started
1. Click on the Install Software link in the Digital POT CD browser or setup.exe if you don’t have the CD browser.
2. Configure board to your liking(refer to “Configuring Other Components” on page 4 for more details). A two
channel opamp(AD822B), 2.5V reference(ADR03), and two power mosfets(FDV301N) are provided for your
convenience.
If you would simply like to evaluate the digital pot, then ignore Step 2 and proceed to Step 3.
3.
Apply a separate power supply or use power from the parallel port
(refer to “Powering the AD5282” on page 4 to
avoid damaging the part).
4. Connect board to parallel port with provided parallel cable.
5.
Open the AD5282 Rev A program from the Windows Start – Program. Move scroll bar to program resistance
settings. The operation is self-explanatory.
Figure 2. AD5282 Software Graphical Interface
Rev B 11/03/03
2
