Programmable buffering, bandwidth extension and pre-emphasis of a track-and-hold circuit using series inductance
US10291192B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2018 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Mar 9, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45608
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.