Communication Noise Investigation on Automotive Sensor

During the electrical characterization of a sensor integrated circuit, communication noise was observed on the accelerometer data. In automotive environment, where personal safety must be ensured at all times and under all circumstances, signal integrity must be guaranteed with a very high level. In this paper, first the cause of this interference is studied. Secondly, electrical and electromagnetic simulations coupled with experiments were set up in order to understand and predict communication noise issue.