New Products Components & Subassemblies

摘要

Capacitive sensing is in widespread use today, in everything from smartphone touchscreens to car-trunk openers. Because we encounter touch sensing in so many environments now, some have found the technology can be finicky at times, not responding when you want it to or responding when you don't want it to. That's because ambient RF noise can create an electrical potential that masks a capacitive-touch voltage signal or cause one to be sensed when none is intended. Texas Instruments' engineers have found a clever way around this problem with TIs new FDC2xlx series capacitance-to-digital converter. Intended for use in applications such as proximity sensing, level sensing for liquids (including conductive ones such as detergent, soap, and ink), collision avoidance, automotive door and kick sensors, and material-size detection, the devices provide noise immunity of 36 dB, which can result in 60 times better performance in the presence of noise than existing capacitive-sensing solutions.