US Patent Issued to InvenSense on Dec. 23 for "DC restore scheme for capacitive sensing amplifiers with optimal noise filtering" (Italian Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,457, issued on Dec. 23, was assigned to InvenSense Inc. (San Jose, Calif.).

"DC restore scheme for capacitive sensing amplifiers with optimal noise filtering" was invented by Luca Collamati (Jesi, Italy) and Federico Mazzarella (Binasco, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A capacitive sensing charge amplifier, e.g., in a direct current (DC) feedback network, may incorporate a switching capacitor, including a first control switch and a second control switch, which receives a switching signal to charge and discharges the switching signal to a virtual ground of a sense amplifier. Noise incorporated into the output of the sense amplifi...