Air gap is the most common hurdle for most speed sensor customers. Hall-effect is the most common technology used due to the ease of design-in and capability to handle the harsh environments. However, it typically achieves 2.5 to 3 mm air gaps. The ATS19580LSNx is GMR technology with the capability to offer >50% more air gap over Hall-effect solutions and maintain the same or better performance in the same stringent environments. Differential front-end sensing allows the same orientation as Hall-effect. The processing algorithms meet or exceed its predecessors, and now it is offering a solution to the air gap hurdle with typical capability achieving 4 to 6 mm, as seen in the data here. Each data set is over multiple targets, each varying in geometry and material. The air gap range has also increased; important for tolerance stacks at the finished sensor designer and in the final system.