AD5220BRZ10

The AD5220BRZ10 is a single-channel increment/decrement Digital Potentiometer for use with line impedance matching. This device performs the same electronic adjustment function as a potentiometer or variable resistor. These products were optimized for instrument and test equipment push-button applications. A choice between bandwidth or power dissipation is available as a result of the wide selection of end-to-end terminal resistance values. The AD5220 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digitally controlled up/down counter. The resistance between the wiper and either end point of the bed resistor provide and a constant resistance step size that is equal to the end-to-end resistance divided by the number of position.