XENSIV™ TLE4988C Hall Based Camshaft Sensor Infineon XENSIV™ TLE4988C Hall Based Camshaft Sensor features advanced camshaft sensing performance and improved application adaption. One major benefit of the advanced sensor performance is the reduced dependency from rare earth back-bias magnets for module manufacturers. The TLE4988C has the proven performance with a ferrite back-bias magnet for all relevant parameters such as phase jitter, phase accuracy, or speed effect across key temperature, air gap, and rpm ranges.