公开(公告)号：US10291192B1

公开(公告)日：2019-05-14

申请号：US15916887

申请日：2018-03-09

Applicant: Xilinx, Inc.

Inventor： Ronan Casey ,  Chi Fung Poon ,  Ilias Chlis ,  Junho Cho

IPC: H03F3/187 ,  H03F3/45 ,  H03G1/00

Abstract: Apparatus and associated methods relate to a peaking module fabricated on a semiconductor substrate including a follower circuit driving a series peaking circuit-branch, the module configured to extend the bandwidth of a track-and-hold circuit. In an illustrative example, the series peaking circuit-branch may include an inductive element. One or more tracks on a metal interconnect above the semiconductor substrate may form the inductive element, for example. In some examples, one or more peaking modules may be combined creating a customized frequency response. In some examples, one or more combined peaking modules may be adjusted by a controller providing dynamic frequency response customization during operation. The follower circuits may employ constant current biasing and/or constant-gm biasing to provide substantial immunity to process, temperature and voltage variations, for example. Various implementations of series peaking circuit-branch pre-emphasis may advantageously extend overall bandwidth of various circuits (e.g., high-speed track-and-hold circuits).