I²C digital pot with 256-tap resolution
The AD5245BRJZ50-R2 is a single-channel digital potentiometer from Analog Devices, configured as a potentiometer with a linear taper and 50kΩ end-to-end resistance. It offers 256 tap positions via an I²C interface, giving the system controller fine-grained adjustment of the wiper position over the full resistance range.
Resistance accuracy and temperature drift
The total resistance tolerance is ±30%, which is typical for digital pots in this class — the wiper resistance is a separate 50Ω typical value that adds a fixed offset at the zero-scale end. A temperature coefficient of 45 ppm/°C means the resistance drifts about 2.25 Ω over a 50°C change in ambient, a factor to budget in precision divider or gain-setting applications.
Supply, temperature, and package
The memory type is volatile — the wiper position resets to midscale on power-up and must be re-programmed after each power cycle.