US Patent Issued to QUALCOMM on Oct. 14 for "Analog-to-digital converter having time-constant tuning with pulse-width-based reference current and resistance searching" (California, Washington Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,143, issued on Oct. 14, was assigned to QUALCOMM Inc. (San Diego).

"Analog-to-digital converter having time-constant tuning with pulse-width-based reference current and resistance searching" was invented by Xiaopeng Zhong (Seattle), Yuhua Guo (San Diego), Chieh-Yu Hsieh (Irvine, Calif.) and Chienchung Yang (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sigma-delta analog-to-digital converter is provided that includes an initial continuous-time integration stage having a variable input resistor and an integration capacitor. A switched-capacitor circuit charges and discharges a replica capacitor to a reference voltage to generate a bias c...