US Patent Issued to ZJW MICROELECTRONICS NORTH AMERICA on July 14 for "Input stage circuit for an operational amplifier with enhanced input offset voltage trimming capabilities" (American, Chinese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,683,567, issued on July 14, was assigned to ZJW MICROELECTRONICS NORTH AMERICA INC. (Wilmington, Mass.).

"Input stage circuit for an operational amplifier with enhanced input offset voltage trimming capabilities" was invented by Xiaoqiang Shou (Westford, Mass.) and Ziqing Lu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "An input stage circuit for an operational amplifier includes first and second differential pairs connected in parallel between positive and negative input terminals. Each differential pair comprises a pair of transistors that are intentionally and systematically mismatched. The mismatching of each transistor pair creates a pre...