Dual 10kΩ linear pot with non-volatile wiper memory
The MAX5487EUD+ is a dual 10kΩ digital potentiometer from Analog Devices with a linear taper and 256 tap positions per channel, controlled via a standard SPI interface. The non-volatile memory retains the wiper setting at power-off, so the part powers up at the last programmed position without host intervention. Operating from a 2.7V to 5.25V supply and rated over -40°C to 85°C, it fits industrial control loops, power-supply trimming, and sensor calibration where the wiper setting must survive a power cycle.
256 taps, 325 Ω wiper resistance, 35 ppm/°C tempo
Each of the two potentiometers offers 256 tap positions, giving a step size of roughly 39 Ω per tap on the 10kΩ end-to-end resistance. The typical wiper resistance is 325 Ω, which adds a fixed series offset that matters when the pot is used as a voltage divider with a high-impedance load. The ±25% absolute resistance tolerance means the end-to-end value can vary from 7.5 kΩ to 12.5 kΩ. In ratiometric circuits (e.g., a voltage divider feeding an ADC reference) the ratio tracks well, but absolute-resistance-critical designs should plan for a calibration trim.
Active production, 14-TSSOP package
It is ROHS3 compliant and supplied in a 14-lead TSSOP package (4.40 mm body width). No immediate obsolescence risk — the part is a current catalog item from Analog Devices.