Simpler designs in automotive sensor applications deliver improved noise immunity

ROHM has announced the availability of automotive-grade ground sense opamps delivering breakthrough EMI tolerance (noise immunity) for automotive systems using sensors along with core systems for EVs and HEVs. Developed using three proprietary analog technologies (layout, processes, circuit design), the BA8290xYxx-C series features superior noise immunity suppressing output voltage fluctuation in all frequency bands to less than ±1%, compared to ±3.5% to ±10% with conventional products. As a result, installing in the subsequent stage of devices that output micro-signals such as sensors will make it feasible to amplify signals without being affected by noise, removing the need for noise countermeasures such as filters. This serves to reduce design load while contributing to greater reliability. The company has developed what is claimed to be the world's first opamps that excludes the effects of noise in automotive sensor applications by utilizing a vertically integrated production system that leverages analog design technology and proprietary bipolar processes.