Apparatus and method for ping-pong mismatch correction
US7236117B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Dec 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1215
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog front-end (AFE) circuit may include a correlated double sampler (CDS) with a ping-pong architecture, and a ping-pong mismatch correction circuit. The CDS employs a ping data path during ping phases, and employs a pong data path during pong phases. The ping-pong mismatch correction circuit is arranged to correct a mismatch between a gain that is associated with the ping data path and a gain that is associated with the pong data path. Further, the ping-pong mismatch correction circuit is arranged to correct a mismatch between an offset that is associated with the ping data path and an offset that is associated with the pong data path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.