austriamicrosystems provides a wide range of digital potentiometers for electronic adjustment of system parameters. Better resolution, lower noise and higher robustness make them superb replacements for their mechanical counterparts.

AS1500: Digital potentiometer, 256 steps, serially interfaced 10k%u03A9
AS1501: Digital potentiometer, 256 steps, serially interfaced 20k%u03A9
AS1502: Digital potentiometer, 256 steps, serially interfaced 50k%u03A9
AS1503: Digital potentiometer, 256 steps, serially interfaced, 100k%u03A9
AS1506: 256-Tap Digital Potentiometer with SPI Interface and High Endurance EEPROM