US Patent Issued to REALTEK SEMICONDUCTOR on April 22 for "Charge pump for fractional-n frequency synthesizer" (California Inventor)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,965, issued on April 22, was assigned to REALTEK SEMICONDUCTOR CORP. (Hsinchu, Taiwan).

"Charge pump for fractional-n frequency synthesizer" was invented by Chia-Liang (Leon) Lin (Fremont, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A charge pump includes a DAC (digital-to-analog converter) configured to draw a first current and a second current from a first node and a second node, respectively, in accordance with a first logical signal, a second logical, and a B-bit control word; a common-gate amplifier configured to provide a path for charge transfer between the second node and a third node in accordance with a third logical signal; an in...