公开(公告)号：US10439624B2

公开(公告)日：2019-10-08

申请号：US15545200

申请日：2016-01-22

Applicant: Circuit Seed, LLC

Inventor： Susan Marya Schober ,  Robert C. Schober ,  Herbert M Shapiro

IPC: H03L7/099 ,  H03L7/24 ,  H03K3/03 ,  H03B5/12 ,  H03K3/354 ,  H03L7/04 ,  H03L7/089 ,  H03L7/091

Abstract: A novel phase locked loop design utilizing novel phase-frequency detector, charge pump, loop filter and voltage controlled oscillator is disclosed. The phase-frequency detector includes a dual reset D-flip flop for use in multi-GHz phase locked loops. Traditional dead zone issues associated with phase frequency detector are improved/addressed by use with a charge transfer-based PLL charge pump.