Slider is a one-dimensional sensor that detects the linear movement of a finger during touch. Sliders are typically used in applications that require adjusting level of a specific user parameter or scrolling menus such as, display brightness or volume in an audio application. Typically, applications utilize sliders of length between 20 to 60mm, but for some applications, it can be more natural to have a longer slider to match the rest of the interface. Long sliders also make it easier to make subtle value adjustments.

This application note provides guidelines to design long slider sensors with PTC.