This is an 8 bit, 3 wire Serial Peripheral Interface (SPI) digital potentiometer experimental module. This module has two DPs integrated in the same module. This is made of semiconductor device instead of a conventional wiper mechanism. The principle of a potentiometer however remains the same. The resistance of this pot is 1K?. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. Resistor terminals A, B, W has no limitations on polarity with respect to each other. Each variable resistor offers a completely programmable value of resistance, between the A-terminal and the wiper or the B terminal and the wiper. In short this is a programmable variable resistor. You must use this potentiometer as a control signal generator only. This should not be used in power systems.

An external power supply 5V DC @250mA is required or +5V DC power supply Model SP5 is recommended.

This finds extensive applications in the field of
a. Power supply output voltage adjustment
b. Automatic gain control
c. Volume control and panning
d. Programmable filters, delays etc.