System for calibrating integrated circuit filters
US7257505B1 · kind B1 · utility
6Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Dec 14, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2210/036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A main signal path filter is calibrated by calibrating a replica filter that tracks parametric changes in the main signal path filter. Programmed values of the replica filter determined during calibration are used to set programmed values in the main signal path filter. The main signal path filter signal does not need to be interrupted while calibration occurs. Power on testing of the main signal path filter and the replica filter can be performed to determine the parametric tracking relationship between the two filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.